Forum?
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Posts: 46,084
Hello all,
I am new to the list and joined because I had a specific question about SERIN
and buffers, as it turns out I did not even have to ask this question because
someone else already did and it was answered and I have only been on this list
for a few days…
This brings me to this question, I am sure that the same questions keep coming
up so I was wondering if parallax could start a forum much like the one that
Sun has for Java. I think this will be extremely helpful. Maybe one already
is out there, but I could not find it.
Well anyway, I got my Java application controlling a few servos through the com
port finally… I look forward to remaining a member of this mailing list.
Regards,
Jake-
Quoting basicstamps@yahoogroups.com:
> There are 25 messages in this issue.
>
> Topics in this digest:
>
> 1. RE: SERIN Help Please
> From: "Jon Williams" <jwilliams@p...>
> 2. dont email me ever again!
> From: Jessie Prior <gymgurly41089@y...>
> 3. DO NOT EMAIL ME AGAIN!!!!!!!!!!!!!
> From: Jessie Prior <gymgurly41089@y...>
> 4. DO NOT EMAIL ME AGAIN TAKE ME OFF UR LIST!!!!!!!!!!!!!!
> From: Jessie Prior <gymgurly41089@y...>
> 5. DO NOT EMAIL ME AGAIN... TAKE MY ADDRESS OFF OF UR LIST!!!!!!
> From: Jessie Prior <gymgurly41089@y...>
> 6. Re: SERIN Help Please
> From: Newzed@a...
> 7. RE: SERIN Help Please
> From: "Jon Williams" <jwilliams@p...>
> 8. Re: SERIN Help Please
> From: Newzed@a...
> 9. RE: dont email me ever again!
> From: "Gregg C Levine" <hansolofalcon@w...>
> 10. Re: DO NOT EMAIL ME AGAIN... (How to unsubscribe)
> From: "Aristides Alvarez" <aristidesparallax@y...>
> 11. Re: Servo usage with power supply!!
> From: "Shawn Lowe" <livinlowe@e...>
> 12. Can you get 110 milliamps from a 9V battery?
> From: "fab4442003" <fab4442003@y...>
> 13. Re: Dang, my loop is to slow...
> From: "Gary W. Sims" <simsgw@c...>
> 14. Re: DAQ
> From: Rene Genest <rene.genest@q...>
> 15. Re: SERIN Help Please - Thanks
> From: "franksmith512" <franksmith512@y...>
> 16. RE: Can you get 110 milliamps from a 9V battery?
> From: "Al Margolis\(TX\)" <al@b...>
> 17. Re: SERIN Help Please - Works! Thanks!
> From: "franksmith512" <franksmith512@y...>
> 18. Re: Can you get 110 milliamps from a 9V battery?
> From: Chuck Britton <britton@a...>
> 19. Re: Can you get 110 milliamps from a 9V battery?
> From: "fab4442003" <fab4442003@y...>
> 20. Re: opto circuit
> From: "arridh_shashank" <arridh_shashank@y...>
> 21. PCB etching
> From: "James Dang" <ensignkim113@y...>
> 22. Re: PCB etching
> From: "Peter NL" <tfro@b...>
> 23. SV: Re: PCB etching
> From: "Trygve Henriksen" <trygve.henriksen@v...>
> 24. SV: Re: PCB etching
> From: "James Dang" <ensignkim113@y...>
> 25. RE: Re: PCB etching
> From: "Al Williams" <alw@a...>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 1
> Date: Sun, 11 Jan 2004 15:32:52 -0800
> From: "Jon Williams" <jwilliams@p...>
> Subject: RE: SERIN Help Please
>
> You can specify an ending character that will cause the rest of the
> array to be filled with zeros; if you don't SERIN will wait until enough
> bytes arrive.
>
> -- Jon Williams
> -- Parallax
>
>
>
Original Message
> From: Newzed@a... [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=wR5SyOnoMa8yD-HxhLBLLogZbIbtamv7jJfL4dlvbQbNcF2vpOiLL3gMqMXeAqEr2YLQ2tiztA]Newzed@a...[/url
> Sent: Sunday, January 11, 2004 3:38 PM
> To: basicstamps@yahoogroups.com
> Subject: Re: [noparse][[/noparse]basicstamps] SERIN Help Please
>
>
> In a message dated 1/11/2004 4:35:35 PM Eastern Standard Time,
> jwilliams@p... writes:
>
>
> > If you're using any of the BS2 family you can do it like this:
> >
> > buffer VAR Byte(16)
> >
> > Main:
> > ' request data
> > SERIN TapeIn, 17197, [noparse][[/noparse]buffer\16]
> > ' process data
> >
> >
>
> Jon, what happens if the incoming string is less than 16 bytes. I was
> getting ready to tell him the same thing, but then I couldn't answer the
> above
> question.
>
> Sid
>
>
> [noparse][[/noparse]Non-text portions of this message have been removed]
>
>
> To UNSUBSCRIBE, just send mail to:
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>
>
> This message has been scanned by WebShield. Please report SPAM to
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>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 2
> Date: Sun, 11 Jan 2004 15:56:31 -0800 (PST)
> From: Jessie Prior <gymgurly41089@y...>
> Subject: dont email me ever again!
>
> DO NOT SEND ME ANOTHER EMAIL!!!!!!! THANKYOU
> franksmith512 <franksmith512@y...> wrote:Hi Everyone!
>
> My project is going really well! I think I am down to just one
> technical hicup for my little robot.
>
> Currently reading a DigiTape Plus electronic measuring tape. It has
> a serial port on it.
>
> Looks like I am getting probably all the information. Am having a
> little problem and it is probably related to my variable and/or SERIN
> formatting.
>
> Example Input String:
> " 5 ft 2 1/16 in"
>
> I added the quotes so you would know exactly what it looks like.
> Already wrote code to parse the string. Have to have it for another
> part of the project.
>
> My code looks something like:
>
> Loop:
> SEROUT .... 'Request data
> SERIN TapeIn, N1200, ????????
>
> '.... process'
>
> GOTO Loop:
>
> Please include how you would define the variable to hold the string.
>
> Thanks!
>
> Take care,
> Frank
>
>
>
>
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
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> of the message will be ignored.
>
>
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>
> To visit your group on the web, go to:
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> [noparse][[/noparse]Non-text portions of this message have been removed]
>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 3
> Date: Sun, 11 Jan 2004 15:57:55 -0800 (PST)
> From: Jessie Prior <gymgurly41089@y...>
> Subject: DO NOT EMAIL ME AGAIN!!!!!!!!!!!!!
>
> DO NOT SEND ME ANOTHER EMAIL!!!!!!! THANKYOU
>
>
> Shawn Lowe <livinlowe@e...> wrote:I admit this is confusing me too.
> When I look at the circuit board traces
> on the back on the BOE it looks to me that both the 9 volt battery and the
> wall wort power supply are connected to the same line which is fed into the
> voltage regulator on the BOE. Why shoud a battery power the regulator any
> differently than the Wall wort?
> I am also doing the experiments in WAMC student book.
>
>
> > [noparse][[/noparse]Original Message]
> > From: ll_deep_soul_ll
> > To:
> > Date: 1/11/2004 10:25:05 AM
> > Subject: [noparse][[/noparse]basicstamps] Servo usage with power supply!!
> >
> > Hi guys,
> > When i purchased the basic stamp board of education kit - full kit,
> > with a rev. B board, a rev. F BS2, it also came with a power
> > supply. I wanted to know if I could use the power supply when
> > running my servo which is controlled by the basic stamp or is my
> > only option to use a 9 volt battery? Theres a warning that said the
> > servo recieves power from the VIN, meaning i shouldn't use anything
> > above 6.5VCD when using the servo. I checked the appendix for one
> > of the tutorials on "what is a microcontroller" and it said when
> > using BOE rev. A/B boards, use a 9 volt batter, or a 6 volt battery
> > packing using AA batteries or a DC supply that provides exactly 6
> > volts regardless of the current draw. When i read the back of the
> > power supply that came with the kit, it says its output is 9VDC
> > 300mA. Once again my question is just, if i could use this given
> > power supply to power the servo and everything attached to the board
> > ie. a few IC's, small series circuit.... or resort to buying more 9
> > volt batteries (i don't wanna use the 6 volt AA battery option).
> >
> > Thank you for taking the time to read this, I tried to make it as
> > clear as possible my situation.
> >
> >
> >
> > To UNSUBSCRIBE, just send mail to:
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>
>
>
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> [noparse][[/noparse]Non-text portions of this message have been removed]
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>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 4
> Date: Sun, 11 Jan 2004 15:58:54 -0800 (PST)
> From: Jessie Prior <gymgurly41089@y...>
> Subject: DO NOT EMAIL ME AGAIN TAKE ME OFF UR LIST!!!!!!!!!!!!!!
>
> DO NOT SEND ME ANOTHER EMAIL!!!!!!! THANKYOU
>
>
> fatboyhd2k <fatboyhd2k@y...> wrote:Hi,
> I'm new to the basic stamp and haven't used one yet. I see the posts
> about burning up outputs, is it possible to add a optical isolator
> to the outputs and save the output?
> Later
>
>
>
> To UNSUBSCRIBE, just send mail to:
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> Yahoo! Hotjobs: Enter the "Signing Bonus" Sweepstakes
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> [noparse][[/noparse]Non-text portions of this message have been removed]
>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 5
> Date: Sun, 11 Jan 2004 16:00:37 -0800 (PST)
> From: Jessie Prior <gymgurly41089@y...>
> Subject: DO NOT EMAIL ME AGAIN... TAKE MY ADDRESS OFF OF UR LIST!!!!!!
>
> DO NOT SEND ME ANOTHER EMAIL!!!!!!! THANKYOU
>
>
> laurasdog@w... wrote:At 09:04 PM 1/10/2004, Tracy wrote:
>
> >to be too slow. You might find the instruction timing information at
> >this url useful:
> >
> >
> >(FOR:NEXT) loops are relatively slow. The timing info I have at that
> >URL for the BS2 gives 763 microseconds for each FOR:NEXT, and 220 to
>
>
>
> Tracy, I must say that as a "newby stamper" I'm finding your emesystems
> site to be incredibly helpful. What a wealth of good info.
> My hat's off to you man!
>
> Thanks,
> Steve
>
>
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> [noparse][[/noparse]Non-text portions of this message have been removed]
>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 6
> Date: Sun, 11 Jan 2004 19:10:28 EST
> From: Newzed@a...
> Subject: Re: SERIN Help Please
>
> In a message dated 1/11/2004 6:36:06 PM Eastern Standard Time,
> jwilliams@p... writes:
>
>
> > You can specify an ending character that will cause the rest of the
> > array to be filled with zeros; if you don't SERIN will wait until enough
> > bytes arrive.
> >
>
> Jon, wouldn't the sending string have to have the same ending character.
> >From what I understand the output of his electronic tape is cast in stone.
>
> Sid
>
>
> [noparse][[/noparse]Non-text portions of this message have been removed]
>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 7
> Date: Sun, 11 Jan 2004 16:25:06 -0800
> From: "Jon Williams" <jwilliams@p...>
> Subject: RE: SERIN Help Please
>
> Based on his original post, he might use "n" as the ending character --
> that appears in his string and after the second portion of his
> measurement.
>
> -- Jon Williams
> -- Parallax
>
>
>
Original Message
> From: Newzed@a... [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=wR5SyOnoMa8yD-HxhLBLLogZbIbtamv7jJfL4dlvbQbNcF2vpOiLL3gMqMXeAqEr2YLQ2tiztA]Newzed@a...[/url
> Sent: Sunday, January 11, 2004 6:10 PM
> To: basicstamps@yahoogroups.com
> Subject: Re: [noparse][[/noparse]basicstamps] SERIN Help Please
>
>
> In a message dated 1/11/2004 6:36:06 PM Eastern Standard Time,
> jwilliams@p... writes:
>
>
> > You can specify an ending character that will cause the rest of the
> > array to be filled with zeros; if you don't SERIN will wait until
> > enough bytes arrive.
> >
>
> Jon, wouldn't the sending string have to have the same ending character.
>
> >From what I understand the output of his electronic tape is cast in
> stone.
>
> Sid
>
>
> [noparse][[/noparse]Non-text portions of this message have been removed]
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
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>
> Yahoo! Groups Links
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> To visit your group on the web, go to:
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>
> This message has been scanned by WebShield. Please report SPAM to
> abuse@p....
>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 8
> Date: Sun, 11 Jan 2004 19:42:14 EST
> From: Newzed@a...
> Subject: Re: SERIN Help Please
>
> In a message dated 1/11/2004 7:28:29 PM Eastern Standard Time,
> jwilliams@p... writes:
>
>
> > Based on his original post, he might use "n" as the ending character --
> > that appears in his string and after the second portion of his
> > measurement.
> >
>
> Good thought, Jon [noparse]:)[/noparse])
>
>
> [noparse][[/noparse]Non-text portions of this message have been removed]
>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 9
> Date: Sun, 11 Jan 2004 20:06:32 -0500
> From: "Gregg C Levine" <hansolofalcon@w...>
> Subject: RE: dont email me ever again!
>
> Hello from Gregg C Levine
> Those of you who wish to leave this list, please follow the
> instructions at the bottom of the message. Or go to the Yahoo Groups
> webpage for this group and follow the steps there. Typically you can
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>
> Gregg C Levine hansolofalcon@w...
>
> "The Force will be with you...Always." Obi-Wan Kenobi
> "Use the Force, Luke."· Obi-Wan Kenobi
> (This company dedicates this E-Mail to General Obi-Wan Kenobi )
> (This company dedicates this E-Mail to Master Yoda )
>
>
>
> >
Original Message
> > From: Jessie Prior [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=BYYjrbGMfhbYtiZCDbtbE6aE9MnicKMKOJ5cTxKTuK4OxniTTLJQj9_41zT3MMwShZOtuFGbtpigs3jKMSA8pA]gymgurly41089@y...[/url
> > Sent: Sunday, January 11, 2004 6:57 PM
> > To: basicstamps@yahoogroups.com
> > Subject: [noparse][[/noparse]basicstamps] dont email me ever again!
> >
> > DO NOT SEND ME ANOTHER EMAIL!!!!!!! THANKYOU
> > franksmith512 <franksmith512@y...> wrote:Hi Everyone!
> >
> > My project is going really well! I think I am down to just one
> > technical hicup for my little robot.
> >
> > Currently reading a DigiTape Plus electronic measuring tape. It has
> > a serial port on it.
> >
> > Looks like I am getting probably all the information. Am having a
> > little problem and it is probably related to my variable and/or
> SERIN
> > formatting.
> >
> > Example Input String:
> > " 5 ft 2 1/16 in"
> >
> > I added the quotes so you would know exactly what it looks like.
> > Already wrote code to parse the string. Have to have it for another
> > part of the project.
> >
> > My code looks something like:
> >
> > Loop:
> > SEROUT .... 'Request data
> > SERIN TapeIn, N1200, ????????
> >
> > '.... process'
> >
> > GOTO Loop:
> >
> > Please include how you would define the variable to hold the string.
> >
> > Thanks!
> >
> > Take care,
> > Frank
> >
> >
> >
> >
> >
> >
> > To UNSUBSCRIBE, just send mail to:
> > basicstamps-unsubscribe@yahoogroups.com
> > from the same email address that you subscribed. Text in the Subject
> and Body of
> > the message will be ignored.
> >
> >
> > Yahoo! Groups Links
> >
> > To visit your group on the web, go to:
> > http://groups.yahoo.com/group/basicstamps/
> >
> > To unsubscribe from this group, send an email to:
> > basicstamps-unsubscribe@yahoogroups.com
> >
> > Your use of Yahoo! Groups is subject to:
> > http://docs.yahoo.com/info/terms/
> >
> >
> >
> >
> >
> > Do you Yahoo!?
> > Yahoo! Hotjobs: Enter the "Signing Bonus" Sweepstakes
> >
> > [noparse][[/noparse]Non-text portions of this message have been removed]
> >
> >
> > To UNSUBSCRIBE, just send mail to:
> > basicstamps-unsubscribe@yahoogroups.com
> > from the same email address that you subscribed. Text in the
> Subject and Body of
> > the message will be ignored.
> >
> >
> > Yahoo! Groups Links
> >
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>
>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 10
> Date: Sun, 11 Jan 2004 17:11:08 -0800
> From: "Aristides Alvarez" <aristidesparallax@y...>
> Subject: Re: DO NOT EMAIL ME AGAIN... (How to unsubscribe)
>
> Dear Jessie.
>
> >
Original Message
> > From: "Jessie Prior" <gymgurly41089@y...>
> > Subject: [noparse][[/noparse]basicstamps] DO NOT EMAIL ME AGAIN... TAKE MY ADDRESS OFF OF UR
> LIST!!!!!!
> > DO NOT SEND ME ANOTHER EMAIL!!!!!!! THANKYOU
> >
> > To unsubscribe from this group, send an email to:
> > basicstamps-unsubscribe@yahoogroups.com
> >
>
> As the footer of EVERY SINGLE email on this forum says, you have to
> unsubscribe yourself sending an email to:
> basicstamps-unsubscribe@yahoogroups.com
>
> Please send the email To that address From your subscribed email address
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> You can also unsubscribe on-line at:
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>
> Saludos,
> Aristides Alvarez
> International Education Program Developer
> aalvarez@p...
> Parallax, Inc. www.parallax.com
> California, USA
>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 11
> Date: Sun, 11 Jan 2004 18:24:21 -0700
> From: "Shawn Lowe" <livinlowe@e...>
> Subject: Re: Servo usage with power supply!!
>
> Ok, I see where the power is connected to the servos on the BOE. It is
> located just below the 4 servo hook up spots.
> Yes, mine seems to be connected to Vin as well.
>
>
>
> > [noparse][[/noparse]Original Message]
> > From: <Newzed@a...>
> > To: <basicstamps@yahoogroups.com>
> > Date: 1/11/2004 2:22:01 PM
> > Subject: Re: [noparse][[/noparse]basicstamps] Servo usage with power supply!!
> >
> > In a message dated 1/11/2004 4:15:40 PM Eastern Standard Time,
> > jwilliams@p... writes:
> >
> >
> > > I'm in a hotel at the moment without access to a Rev B BOE, but I think
> > > the default trace routes Vdd to the servo power connection. You can cut
> > > a trace and solder a jumper to route Vin instead. The Rev C BOE now
> > > includes a shunt that allows you to select between Vdd and Vin for the
> > > servos.
> > >
> >
> > Hi, Jon
> >
> > Just measured the servo port. Default trace is Vin.
> >
> > Where are you - Holland?
> >
> > Sid
> >
> >
> > [noparse][[/noparse]Non-text portions of this message have been removed]
> >
> >
> > To UNSUBSCRIBE, just send mail to:
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> >
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> > http://docs.yahoo.com/info/terms/
> >
>
>
>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 12
> Date: Mon, 12 Jan 2004 02:14:49 -0000
> From: "fab4442003" <fab4442003@y...>
> Subject: Can you get 110 milliamps from a 9V battery?
>
> I have a 9V transistor battery connected thru a 7805 5V regulator to
> provide 5V to a chip that requires 110 milliamps (a General
> Instruments Allophone Speech chip). Per the 7805 data sheet, I have a
> .3 uF cap on the input side and .1 uF cap on the output (5V side) of
> the regulator. I have the ground pin of the regulator connected to Vss
> on my BS2 Homework board. The 'run' light on the BS2 Homework board
> blinks on and after 15 seconds turns off - which appears to be the
> correct execution time for my program. During troubleshooting this
> circuit, I found the output of the regulator is only .04V when
> connected to the chip. So either there's a short in my circuit or this
> chip is pulling too much current from my 5V source.
>
> Last qustion - is there a simple way to verify a crystal is working
> (without the use of a scope)?
>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 13
> Date: Sun, 11 Jan 2004 18:24:22 -0800
> From: "Gary W. Sims" <simsgw@c...>
> Subject: Re: Dang, my loop is to slow...
>
> From: <laurasdog@w...>
> >
> >> It's fairly straightforward to build an external circuit to
> >> provide that clock pulse and then enable it with the Stamp
> >> pin instead of actually creating the pulse from the Stamp.
> >> Would a 2 kHz clock with a pulse width of 200 us be what
> >> you're trying to create?
> >
> > Gary, yes I need a clock pulse that I can vary from around
> > 500 Hz to almost 2 KHz. The pulse train is a specific number
> > of pulses long, with the exact number to be read from a
> > variable. It could be anywhere from about ten pulses all the
> > way up to several thousand pulses.
> >
> Okay, for what it's worth, here's how I'd go about designing such a circuit.
> I suspect one of our number will be able to tell you "buy a Widget 409 and
> read the app notes" but personally I don't know a specific part off hand. It
> may help to see how I would go about finding what I need if this were my
> application. Grabbing a catalog is not helpful until I understand what I'm
> trying to find. So I would build a notional circuit in my mind like this:
>
> Requirements: what do we need to control?
>
> 1. The pulse frequency: a range from 500 Hz to 2 kHz.
>
> 2. The pulse count. Must be exact -- not based on time duration, but an
> actual count.
>
> We do NOT need to control the pulse width. We can let it arise from our
> other design choices within reason. From your earlier comments, I infer that
> we can choose a convenient pulse width for all frequencies, so long as it
> meets a minimum width required by the downstream circuits. 200 us I believe
> you said, and a fifty percent duty cycle at 2 kHz would provide a pulse
> width of 250 us. So as we choose parts we can keep in mind "about 250 us"
> without creating other problems.
>
> Now creating pulse trains of this frequency is not a job for interpreted
> software. If we ran into this need every day, Parallax easily could put such
> a function into firmware, but it's not common enough for them to have
> considered it I'm sure. Besides, we tie up the microcontroller completely if
> we use it to generate a long pulse train, and we might have other useful
> things to do. (Even at 2 kHz, thousands of pulses takes more than one
> second, and that's a very long time to a microprocessor.) So we want to
> control the creation of each pulse train from our PBasic program in the
> Stamp, but we'll generate it externally.
>
> For the sake of simplicity, I'll assume we can spare enough pins on the
> Stamp to output the pulse count value in parallel. That is, we can use a
> statement like:
>
> OUTL=PulseCount
>
> to put the count on the pins where it can control the external circuit.
> Actually, I assume we will need at least ten pins since you specified a
> count "into the thousands" but I won't complicate that example by adding the
> code to put all ten bits on the output pins.
>
> Obviously, the simplest device to do all this would be a single integrated
> circuit. If we can find one, it will be called something like: "count-down
> counter with oscillator." I'll describe the use of this hypothetical perfect
> chip first, and then talk about how to divide up the functions if we can't
> find a single "perfect" chip that does the job.
>
> It will have 10 to 14 pins that are how we enter the starting value for the
> count. Those pins will latch the presented value when we put a high on a pin
> called "enable input" or something similar. The counter will begin to count
> down when we put a high on a pin called "enable count" or, again, something
> similar. Obviously, in accordance with the whims of chip designers, either
> enable pin might require a low instead of a high, but we don't care about
> such differences until we actually start to wire and code.
>
> The oscillator part of that chip name means it has pins for a resistor and a
> capacitor -- or perhaps just a resistor, with the capacitor on board
> already. This will be how we control the frequency.
>
> So the procedure for using this hypothetical chip we'd really like to find
> goes like this:
>
> Step 1. Set the frequency for the on-chip oscillator. If you have a small
> number of fixed frequencies that will be required, then you can do this
> easily with an analog multiplexer. Dedicating three pins to address this
> chip will give us eight different frequencies, and they can be pretty much
> arbitrary frequencies. I won't get into design tricks unless you actually go
> this way, but an analog multiplexer gives you a simple circuit path from one
> input pin to eight output pins. That's eight different circuit paths. You
> can arrange for each one to present a different resistance to the pins that
> control that oscillator. The Stamp picks the frequency by picking the
> resistance, which it does by picking which output pin is addressed on the
> multiplexer. And it does that by putting the three-bit address on three of
> its own output pins. Simpler to do then it is to say. Much.
>
> If we need a greater selection of frequencies, and especially if they are
> not pre-determined, then a digital potentiometer will be required. Their
> interface is slightly more complex from a programming point of view, but in
> exchange they provide more possible resistance values. On the other hand,
> those values are not arbitrary, but must fall on a linear scale with a step
> size that is fixed once you buy the pot. App notes abound on using a digital
> pot.
>
> Now we have set up the oscillator to provide anything from a few hundred to
> a few thousand pulses per second to the counter circuit.
>
> 2. Put the count of pulses required on the output pins of the Stamp. Set
> them to output mode. Pulse the Stamp pin tied to the latch enable with a
> high or a low as appropriate. This will load the count value into the
> counter register.
>
> 3. Enable the counter chip. This will start the emission of pulses.
> Depending on the number of downstream circuits, we may have to feed the
> output pulse of the counter to a driver, but that's a separate part of the
> design.
>
> 4. Hopefully, the chip we chose has a stop-when-count-reaches-zero feature.
> If so, it will have a status pin that we tie to a final Stamp pin so we can
> tell when the pulse train is complete. We can check this pin periodically
> while we do other things, or we can just wait in a tight loop until that pin
> changes state. If it doesn't have such a feature (which seems unlikely)
> there are other ways to stop the pulses when count reaches zero.
>
> Comments:
>
> A typical oscillator circuit will output roughly a square wave with a fifty
> percent duty cycle. If our highest frequency is 2 kHz, then the high side of
> that wave will never be less than 250 us. It may be as long as one
> millisecond for the low frequencies. I postulated that we have no need to
> control pulse width, but if pulses too long turn out to be a problem then
> you need to configure a 555 as a one-shot. With that chip, you feed it the
> output of the counter and use the 555 to explicitly control the pulse width
> seen by the downstream circuits.
>
> It's likely that a counter chip is available with all those functions in one
> form or another. If we have to break this up into multiple chips, it still
> won't be many. First, a 555 will provide the pulse source for us and you
> still control the frequency with a variable resistance, just as I described
> above. Oscillators are pretty straightforward and available in many flavors,
> but a 555 is a standby available at any local five and dime. (Well, okay.
> Any local Radio Shack or equal<g>.) Most important, you can find app notes
> everywhere for 555 circuits.
>
> The output of the pulse source must be used to pulse a counter set to count
> down. Such counters always have an interface to load the initial value, and
> we simply limit our choices to one that offers a pin that tells us when it
> reaches zero. We use that pin to stop the count if it doesn't already do
> that.
>
> I don't have time to do a parts search for the specific parts we'd need for
> this circuit, but you shouldn't have too much trouble finding what you need
> on Digikey or Mouser with all those keywords to work with: count-down,
> counter, oscillator, and so forth.
>
> Send me a private note if I've muddied the water too much. This is one of
> those simple things to do, that take a long time to describe.
>
> Gary
>
>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 14
> Date: Sun, 11 Jan 2004 10:29:16 +0100
> From: Rene Genest <rene.genest@q...>
> Subject: Re: DAQ
>
> Hi Sid!
>
> Sometime everything ma be so confused even if it is really simple! Now I
> understand
> that Pin 16 is connected to DB9 instead of the pin # 16 on the BS2, and
> after
> rerereading carefully the explication , I found that I did not write the
> directives on
> CAPITALS letters!!!!!!!!!!!!!! I know it sound stupid to be stuck just by so
> ridiculous mistakes but when we finally get through we just wonder to see it
> work
> and say " IT'S ALIIIIIIIVE!!!!!!!! "
>
> Thanks a lot to everybody!
> Rene
>
> Newzed@a... a écrit :
>
> > In a message dated 1/11/2004 5:53:32 PM Eastern Standard Time,
> > rene.genest@q... writes:
> >
> > > I've just download DAQ from Parallax website, when I start it and
> > > accept macro, the Stamp DAQ interface
> > > appear and display "press F-1 for help", I did, and I've printed the
> > > few documentation pages. On their example, they
> > > say.
> > >
> > > sPin CON 16 'Serial Pin - P16, programming port
> > >
> > > But pins might be from 0 to 15? Is it?
> > >
> > > Is the DAQ should communicate with BS2 by the same DB9 from the
> > > experimentation board to COM-1 as we do when we download code in it?
> > > How can I find more documentation about connect and use
> >
> > DAQ communictes with Stamp ONLY via Pin 16, just like debug.
> > Sid Weaver
> > W4EKQ
> > Port Richey, FL
> >
> > [noparse][[/noparse]Non-text portions of this message have been removed]
> >
> > To UNSUBSCRIBE, just send mail to:
> > basicstamps-unsubscribe@yahoogroups.com
> > from the same email address that you subscribed. Text in the Subject and
> Body of the message will be ignored.
> >
> >
> > Yahoo! Groups Links
> >
> > To visit your group on the web, go to:
> > http://groups.yahoo.com/group/basicstamps/
> >
> > To unsubscribe from this group, send an email to:
> > basicstamps-unsubscribe@yahoogroups.com
> >
> > Your use of Yahoo! Groups is subject to:
> > http://docs.yahoo.com/info/terms/
>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 15
> Date: Mon, 12 Jan 2004 02:32:12 -0000
> From: "franksmith512" <franksmith512@y...>
> Subject: Re: SERIN Help Please - Thanks
>
> Thanks guys! That will probably work. I will try it after this post.
>
> I had tried [noparse][[/noparse]buffer\8] and of course it was out of sync. When I
> tried [noparse][[/noparse]buffer\16], it stopped. SERIN was probably waiting for all 16
> chars.
>
> The answer is more than likely watching for the "in".
>
> Thanks,
> Frank
>
>
>
> --- In basicstamps@yahoogroups.com, Newzed@a... wrote:
> > In a message dated 1/11/2004 7:28:29 PM Eastern Standard Time,
> > jwilliams@p... writes:
> >
> >
> > > Based on his original post, he might use "n" as the ending
> character --
> > > that appears in his string and after the second portion of his
> > > measurement.
> > >
> >
> > Good thought, Jon [noparse]:)[/noparse])
> >
> >
> > [noparse][[/noparse]Non-text portions of this message have been removed]
>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 16
> Date: Sun, 11 Jan 2004 19:07:49 -0800
> From: "Al Margolis\(TX\)" <al@b...>
> Subject: RE: Can you get 110 milliamps from a 9V battery?
>
> 110 ma is only .11A, so you aren't drawing too much current, unless you have
> a short.
>
> Disconnect everything from the 7805's Vout and make sure you are getting 5v.
> Then start reconnecting the circuit in steps while periodically rechecking
> Vout.
>
> -- Al Margolis, founder
> www.hobbyengineering.com
> The technology builder's source for kits, components, supplies, tools, books
> and education.
>
>
Original Message
> From: fab4442003 [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=PWwVxPb_SutmT6AhcbZE39HOV80GcjK5m_eEE_HeAw21lfmiyZ1kRPgQMAO9tLETJGHbuA_Mg5I80Y52Cw]fab4442003@y...[/url
> Sent: Sunday, January 11, 2004 6:15 PM
> To: basicstamps@yahoogroups.com
> Subject: [noparse][[/noparse]basicstamps] Can you get 110 milliamps from a 9V battery?
>
>
> I have a 9V transistor battery connected thru a 7805 5V regulator to
> provide 5V to a chip that requires 110 milliamps (a General
> Instruments Allophone Speech chip). Per the 7805 data sheet, I have a
> .3 uF cap on the input side and .1 uF cap on the output (5V side) of
> the regulator. I have the ground pin of the regulator connected to Vss
> on my BS2 Homework board. The 'run' light on the BS2 Homework board
> blinks on and after 15 seconds turns off - which appears to be the
> correct execution time for my program. During troubleshooting this
> circuit, I found the output of the regulator is only .04V when
> connected to the chip. So either there's a short in my circuit or this
> chip is pulling too much current from my 5V source.
>
> Last qustion - is there a simple way to verify a crystal is working
> (without the use of a scope)?
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed. Text in the Subject and
> Body of the message will be ignored.
>
>
> Yahoo! Groups Links
>
> To visit your group on the web, go to:
> http://groups.yahoo.com/group/basicstamps/
>
> To unsubscribe from this group, send an email to:
> basicstamps-unsubscribe@yahoogroups.com
>
> Your use of Yahoo! Groups is subject to:
> http://docs.yahoo.com/info/terms/
>
>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 17
> Date: Mon, 12 Jan 2004 03:17:59 -0000
> From: "franksmith512" <franksmith512@y...>
> Subject: Re: SERIN Help Please - Works! Thanks!
>
> Watching for the ending "n" did the trick!
>
> Thanks again,
> Frank
>
>
>
> --- In basicstamps@yahoogroups.com, Newzed@a... wrote:
> > In a message dated 1/11/2004 7:28:29 PM Eastern Standard Time,
> > jwilliams@p... writes:
> >
> >
> > > Based on his original post, he might use "n" as the ending
> character --
> > > that appears in his string and after the second portion of his
> > > measurement.
> > >
> >
> > Good thought, Jon [noparse]:)[/noparse])
> >
> >
> > [noparse][[/noparse]Non-text portions of this message have been removed]
>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 18
> Date: Sun, 11 Jan 2004 22:58:08 -0500
> From: Chuck Britton <britton@a...>
> Subject: Re: Can you get 110 milliamps from a 9V battery?
>
> check that your 9 volt battery is still 'fresh'.
>
>
>
> At 2:14 AM +0000 1/12/04, fab4442003 wrote:
> >I have a 9V transistor battery connected thru a 7805 5V regulator to
> >provide 5V to a chip that requires 110 milliamps (a General
> >Instruments Allophone Speech chip). Per the 7805 data sheet, I have a
> >.3 uF cap on the input side and .1 uF cap on the output (5V side) of
> >the regulator. I have the ground pin of the regulator connected to Vss
> >on my BS2 Homework board. The 'run' light on the BS2 Homework board
> >blinks on and after 15 seconds turns off - which appears to be the
> >correct execution time for my program. During troubleshooting this
> >circuit, I found the output of the regulator is only .04V when
> >connected to the chip. So either there's a short in my circuit or this
> >chip is pulling too much current from my 5V source.
>
> --
> Chuck Britton Education is what is
left when
> britton@n... you have forgotten everything
> North Carolina School of Science & Math you learned in school.
> (919) 416-2762 Albert Einstein,
1936
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 19
> Date: Mon, 12 Jan 2004 04:03:57 -0000
> From: "fab4442003" <fab4442003@y...>
> Subject: Re: Can you get 110 milliamps from a 9V battery?
>
> Thanks for the feedback. I just found out something I never knew on my
> 20 year old Radio Shack breadboard - the SIDE rails on both edges of
> the breadboard are connected down the entire length of the breadboard!
> Time to rewire this thing...
>
> > 110 ma is only .11A, so you aren't drawing too much current, unless
> you have
> > a short.
> >
> > Disconnect everything from the 7805's Vout and make sure you are
> getting 5v.
> > Then start reconnecting the circuit in steps while periodically
> rechecking
> > Vout.
> >
> > -- Al Margolis, founder
> > www.hobbyengineering.com
> > The technology builder's source for kits, components, supplies,
> tools, books
> > and education.
> >
> >
Original Message
> > From: fab4442003 [noparse][[/noparse]mailto:fab4442003@y...]
> > Sent: Sunday, January 11, 2004 6:15 PM
> > To: basicstamps@yahoogroups.com
> > Subject: [noparse][[/noparse]basicstamps] Can you get 110 milliamps from a 9V battery?
> >
> >
> > I have a 9V transistor battery connected thru a 7805 5V regulator to
> > provide 5V to a chip that requires 110 milliamps (a General
> > Instruments Allophone Speech chip). Per the 7805 data sheet, I have a
> > .3 uF cap on the input side and .1 uF cap on the output (5V side) of
> > the regulator. I have the ground pin of the regulator connected to Vss
> > on my BS2 Homework board. The 'run' light on the BS2 Homework board
> > blinks on and after 15 seconds turns off - which appears to be the
> > correct execution time for my program. During troubleshooting this
> > circuit, I found the output of the regulator is only .04V when
> > connected to the chip. So either there's a short in my circuit or this
> > chip is pulling too much current from my 5V source.
> >
> > Last qustion - is there a simple way to verify a crystal is working
> > (without the use of a scope)?
>
>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 20
> Date: Mon, 12 Jan 2004 05:25:23 -0000
> From: "arridh_shashank" <arridh_shashank@y...>
> Subject: Re: opto circuit
>
> Hey
>
> If one was to try use an opto isolator how would they go about it?
> I have read a few pages about them and it seems sort of confusing is
> there a straight forward way to impliment them with the stamp + is
> there a prefered opto isolator that would be ideal for use with the
> stamp??
>
> Rgds
> Arridh
>
>
>
> --- In basicstamps@yahoogroups.com, "Jon Williams" <jwilliams@p...>
> wrote:
> > Of course you can, but most of the time the addition of a simple
> series
> > resistor (220 ohms) will save your Stamp from accidents. We now
> build
> > in 220 ohm resistors on every IO pin on the BS2 Homework Board and
> the
> > BS1 Project Board. Note that both of these boards use built-in
> Stamp
> > circuits, so if you're using a Stamp module or stock BOE, you'll
> need to
> > add the 220s yourself.
> >
> > I carry as small plastic box of resistors. The box has five
> > compartments. Here's how the box is stocked and why:
> >
> > 220 - pin protection
> > 470 - LEDs (a few)
> > 1K - LEDs (a bunch, ie 7-segment)
> > 4.7K - I2C and 1-Wire buss pull-ups
> > 10K - switch input pull-up/pull-down
> >
> >
> > -- Jon Williams
> > -- Parallax
> >
> >
> >
Original Message
> > From: fatboyhd2k [noparse][[/noparse]mailto:fatboyhd2k@y...]
> > Sent: Sunday, January 11, 2004 12:13 PM
> > To: basicstamps@yahoogroups.com
> > Subject: [noparse][[/noparse]basicstamps] opto circuit
> >
> >
> > Hi,
> > I'm new to the basic stamp and haven't used one yet. I see the
> posts
> > about burning up outputs, is it possible to add a optical isolator
> > to the outputs and save the output?
> > Later
> >
> >
> >
> > To UNSUBSCRIBE, just send mail to:
> > basicstamps-unsubscribe@yahoogroups.com
> > from the same email address that you subscribed. Text in the
> Subject
> > and Body of the message will be ignored.
> >
> >
> > Yahoo! Groups Links
> >
> > To visit your group on the web, go to:
> > http://groups.yahoo.com/group/basicstamps/
> >
> > To unsubscribe from this group, send an email to:
> > basicstamps-unsubscribe@yahoogroups.com
> >
> > Your use of Yahoo! Groups is subject to:
> > http://docs.yahoo.com/info/terms/
> >
> >
> >
> >
> > This message has been scanned by WebShield. Please report SPAM to
> > abuse@p...
>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 21
> Date: Mon, 12 Jan 2004 06:49:51 -0000
> From: "James Dang" <ensignkim113@y...>
> Subject: PCB etching
>
> Hi,
>
> I'm working on a soccer robot and am up to etching the PCB. I've
> got pretty much all the equipment. Now, I'm not sure whether to do
> it manually with an etch resistant pen, or to use a comptuer program
> and use a toner etch resist transfer.
>
> The problem I see with doing it manually is that I need some kind of
> a stencil to draw the sections where the IC's are going to go and so
> on.. Does anyone know of such a stencil and where I could get one?
>
> The problem I see with doing it with a computer program is I can't
> find a program where I can design it (with all the symbols aready in
> the program) and then print it where it's 1:1 with t
I am new to the list and joined because I had a specific question about SERIN
and buffers, as it turns out I did not even have to ask this question because
someone else already did and it was answered and I have only been on this list
for a few days…
This brings me to this question, I am sure that the same questions keep coming
up so I was wondering if parallax could start a forum much like the one that
Sun has for Java. I think this will be extremely helpful. Maybe one already
is out there, but I could not find it.
Well anyway, I got my Java application controlling a few servos through the com
port finally… I look forward to remaining a member of this mailing list.
Regards,
Jake-
Quoting basicstamps@yahoogroups.com:
> There are 25 messages in this issue.
>
> Topics in this digest:
>
> 1. RE: SERIN Help Please
> From: "Jon Williams" <jwilliams@p...>
> 2. dont email me ever again!
> From: Jessie Prior <gymgurly41089@y...>
> 3. DO NOT EMAIL ME AGAIN!!!!!!!!!!!!!
> From: Jessie Prior <gymgurly41089@y...>
> 4. DO NOT EMAIL ME AGAIN TAKE ME OFF UR LIST!!!!!!!!!!!!!!
> From: Jessie Prior <gymgurly41089@y...>
> 5. DO NOT EMAIL ME AGAIN... TAKE MY ADDRESS OFF OF UR LIST!!!!!!
> From: Jessie Prior <gymgurly41089@y...>
> 6. Re: SERIN Help Please
> From: Newzed@a...
> 7. RE: SERIN Help Please
> From: "Jon Williams" <jwilliams@p...>
> 8. Re: SERIN Help Please
> From: Newzed@a...
> 9. RE: dont email me ever again!
> From: "Gregg C Levine" <hansolofalcon@w...>
> 10. Re: DO NOT EMAIL ME AGAIN... (How to unsubscribe)
> From: "Aristides Alvarez" <aristidesparallax@y...>
> 11. Re: Servo usage with power supply!!
> From: "Shawn Lowe" <livinlowe@e...>
> 12. Can you get 110 milliamps from a 9V battery?
> From: "fab4442003" <fab4442003@y...>
> 13. Re: Dang, my loop is to slow...
> From: "Gary W. Sims" <simsgw@c...>
> 14. Re: DAQ
> From: Rene Genest <rene.genest@q...>
> 15. Re: SERIN Help Please - Thanks
> From: "franksmith512" <franksmith512@y...>
> 16. RE: Can you get 110 milliamps from a 9V battery?
> From: "Al Margolis\(TX\)" <al@b...>
> 17. Re: SERIN Help Please - Works! Thanks!
> From: "franksmith512" <franksmith512@y...>
> 18. Re: Can you get 110 milliamps from a 9V battery?
> From: Chuck Britton <britton@a...>
> 19. Re: Can you get 110 milliamps from a 9V battery?
> From: "fab4442003" <fab4442003@y...>
> 20. Re: opto circuit
> From: "arridh_shashank" <arridh_shashank@y...>
> 21. PCB etching
> From: "James Dang" <ensignkim113@y...>
> 22. Re: PCB etching
> From: "Peter NL" <tfro@b...>
> 23. SV: Re: PCB etching
> From: "Trygve Henriksen" <trygve.henriksen@v...>
> 24. SV: Re: PCB etching
> From: "James Dang" <ensignkim113@y...>
> 25. RE: Re: PCB etching
> From: "Al Williams" <alw@a...>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 1
> Date: Sun, 11 Jan 2004 15:32:52 -0800
> From: "Jon Williams" <jwilliams@p...>
> Subject: RE: SERIN Help Please
>
> You can specify an ending character that will cause the rest of the
> array to be filled with zeros; if you don't SERIN will wait until enough
> bytes arrive.
>
> -- Jon Williams
> -- Parallax
>
>
>
Original Message
> From: Newzed@a... [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=wR5SyOnoMa8yD-HxhLBLLogZbIbtamv7jJfL4dlvbQbNcF2vpOiLL3gMqMXeAqEr2YLQ2tiztA]Newzed@a...[/url
> Sent: Sunday, January 11, 2004 3:38 PM
> To: basicstamps@yahoogroups.com
> Subject: Re: [noparse][[/noparse]basicstamps] SERIN Help Please
>
>
> In a message dated 1/11/2004 4:35:35 PM Eastern Standard Time,
> jwilliams@p... writes:
>
>
> > If you're using any of the BS2 family you can do it like this:
> >
> > buffer VAR Byte(16)
> >
> > Main:
> > ' request data
> > SERIN TapeIn, 17197, [noparse][[/noparse]buffer\16]
> > ' process data
> >
> >
>
> Jon, what happens if the incoming string is less than 16 bytes. I was
> getting ready to tell him the same thing, but then I couldn't answer the
> above
> question.
>
> Sid
>
>
> [noparse][[/noparse]Non-text portions of this message have been removed]
>
>
> To UNSUBSCRIBE, just send mail to:
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>
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>
> This message has been scanned by WebShield. Please report SPAM to
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>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 2
> Date: Sun, 11 Jan 2004 15:56:31 -0800 (PST)
> From: Jessie Prior <gymgurly41089@y...>
> Subject: dont email me ever again!
>
> DO NOT SEND ME ANOTHER EMAIL!!!!!!! THANKYOU
> franksmith512 <franksmith512@y...> wrote:Hi Everyone!
>
> My project is going really well! I think I am down to just one
> technical hicup for my little robot.
>
> Currently reading a DigiTape Plus electronic measuring tape. It has
> a serial port on it.
>
> Looks like I am getting probably all the information. Am having a
> little problem and it is probably related to my variable and/or SERIN
> formatting.
>
> Example Input String:
> " 5 ft 2 1/16 in"
>
> I added the quotes so you would know exactly what it looks like.
> Already wrote code to parse the string. Have to have it for another
> part of the project.
>
> My code looks something like:
>
> Loop:
> SEROUT .... 'Request data
> SERIN TapeIn, N1200, ????????
>
> '.... process'
>
> GOTO Loop:
>
> Please include how you would define the variable to hold the string.
>
> Thanks!
>
> Take care,
> Frank
>
>
>
>
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
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> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 3
> Date: Sun, 11 Jan 2004 15:57:55 -0800 (PST)
> From: Jessie Prior <gymgurly41089@y...>
> Subject: DO NOT EMAIL ME AGAIN!!!!!!!!!!!!!
>
> DO NOT SEND ME ANOTHER EMAIL!!!!!!! THANKYOU
>
>
> Shawn Lowe <livinlowe@e...> wrote:I admit this is confusing me too.
> When I look at the circuit board traces
> on the back on the BOE it looks to me that both the 9 volt battery and the
> wall wort power supply are connected to the same line which is fed into the
> voltage regulator on the BOE. Why shoud a battery power the regulator any
> differently than the Wall wort?
> I am also doing the experiments in WAMC student book.
>
>
> > [noparse][[/noparse]Original Message]
> > From: ll_deep_soul_ll
> > To:
> > Date: 1/11/2004 10:25:05 AM
> > Subject: [noparse][[/noparse]basicstamps] Servo usage with power supply!!
> >
> > Hi guys,
> > When i purchased the basic stamp board of education kit - full kit,
> > with a rev. B board, a rev. F BS2, it also came with a power
> > supply. I wanted to know if I could use the power supply when
> > running my servo which is controlled by the basic stamp or is my
> > only option to use a 9 volt battery? Theres a warning that said the
> > servo recieves power from the VIN, meaning i shouldn't use anything
> > above 6.5VCD when using the servo. I checked the appendix for one
> > of the tutorials on "what is a microcontroller" and it said when
> > using BOE rev. A/B boards, use a 9 volt batter, or a 6 volt battery
> > packing using AA batteries or a DC supply that provides exactly 6
> > volts regardless of the current draw. When i read the back of the
> > power supply that came with the kit, it says its output is 9VDC
> > 300mA. Once again my question is just, if i could use this given
> > power supply to power the servo and everything attached to the board
> > ie. a few IC's, small series circuit.... or resort to buying more 9
> > volt batteries (i don't wanna use the 6 volt AA battery option).
> >
> > Thank you for taking the time to read this, I tried to make it as
> > clear as possible my situation.
> >
> >
> >
> > To UNSUBSCRIBE, just send mail to:
> > basicstamps-unsubscribe@yahoogroups.com
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> >
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>
>
>
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> [noparse][[/noparse]Non-text portions of this message have been removed]
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>
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> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 4
> Date: Sun, 11 Jan 2004 15:58:54 -0800 (PST)
> From: Jessie Prior <gymgurly41089@y...>
> Subject: DO NOT EMAIL ME AGAIN TAKE ME OFF UR LIST!!!!!!!!!!!!!!
>
> DO NOT SEND ME ANOTHER EMAIL!!!!!!! THANKYOU
>
>
> fatboyhd2k <fatboyhd2k@y...> wrote:Hi,
> I'm new to the basic stamp and haven't used one yet. I see the posts
> about burning up outputs, is it possible to add a optical isolator
> to the outputs and save the output?
> Later
>
>
>
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> [noparse][[/noparse]Non-text portions of this message have been removed]
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>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 5
> Date: Sun, 11 Jan 2004 16:00:37 -0800 (PST)
> From: Jessie Prior <gymgurly41089@y...>
> Subject: DO NOT EMAIL ME AGAIN... TAKE MY ADDRESS OFF OF UR LIST!!!!!!
>
> DO NOT SEND ME ANOTHER EMAIL!!!!!!! THANKYOU
>
>
> laurasdog@w... wrote:At 09:04 PM 1/10/2004, Tracy wrote:
>
> >to be too slow. You might find the instruction timing information at
> >this url useful:
> >
> >
> >(FOR:NEXT) loops are relatively slow. The timing info I have at that
> >URL for the BS2 gives 763 microseconds for each FOR:NEXT, and 220 to
>
>
>
> Tracy, I must say that as a "newby stamper" I'm finding your emesystems
> site to be incredibly helpful. What a wealth of good info.
> My hat's off to you man!
>
> Thanks,
> Steve
>
>
> To UNSUBSCRIBE, just send mail to:
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>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 6
> Date: Sun, 11 Jan 2004 19:10:28 EST
> From: Newzed@a...
> Subject: Re: SERIN Help Please
>
> In a message dated 1/11/2004 6:36:06 PM Eastern Standard Time,
> jwilliams@p... writes:
>
>
> > You can specify an ending character that will cause the rest of the
> > array to be filled with zeros; if you don't SERIN will wait until enough
> > bytes arrive.
> >
>
> Jon, wouldn't the sending string have to have the same ending character.
> >From what I understand the output of his electronic tape is cast in stone.
>
> Sid
>
>
> [noparse][[/noparse]Non-text portions of this message have been removed]
>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 7
> Date: Sun, 11 Jan 2004 16:25:06 -0800
> From: "Jon Williams" <jwilliams@p...>
> Subject: RE: SERIN Help Please
>
> Based on his original post, he might use "n" as the ending character --
> that appears in his string and after the second portion of his
> measurement.
>
> -- Jon Williams
> -- Parallax
>
>
>
Original Message
> From: Newzed@a... [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=wR5SyOnoMa8yD-HxhLBLLogZbIbtamv7jJfL4dlvbQbNcF2vpOiLL3gMqMXeAqEr2YLQ2tiztA]Newzed@a...[/url
> Sent: Sunday, January 11, 2004 6:10 PM
> To: basicstamps@yahoogroups.com
> Subject: Re: [noparse][[/noparse]basicstamps] SERIN Help Please
>
>
> In a message dated 1/11/2004 6:36:06 PM Eastern Standard Time,
> jwilliams@p... writes:
>
>
> > You can specify an ending character that will cause the rest of the
> > array to be filled with zeros; if you don't SERIN will wait until
> > enough bytes arrive.
> >
>
> Jon, wouldn't the sending string have to have the same ending character.
>
> >From what I understand the output of his electronic tape is cast in
> stone.
>
> Sid
>
>
> [noparse][[/noparse]Non-text portions of this message have been removed]
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
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>
> This message has been scanned by WebShield. Please report SPAM to
> abuse@p....
>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 8
> Date: Sun, 11 Jan 2004 19:42:14 EST
> From: Newzed@a...
> Subject: Re: SERIN Help Please
>
> In a message dated 1/11/2004 7:28:29 PM Eastern Standard Time,
> jwilliams@p... writes:
>
>
> > Based on his original post, he might use "n" as the ending character --
> > that appears in his string and after the second portion of his
> > measurement.
> >
>
> Good thought, Jon [noparse]:)[/noparse])
>
>
> [noparse][[/noparse]Non-text portions of this message have been removed]
>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 9
> Date: Sun, 11 Jan 2004 20:06:32 -0500
> From: "Gregg C Levine" <hansolofalcon@w...>
> Subject: RE: dont email me ever again!
>
> Hello from Gregg C Levine
> Those of you who wish to leave this list, please follow the
> instructions at the bottom of the message. Or go to the Yahoo Groups
> webpage for this group and follow the steps there. Typically you can
> do so from the page that lists all of your groups.
>
> Gregg C Levine hansolofalcon@w...
>
> "The Force will be with you...Always." Obi-Wan Kenobi
> "Use the Force, Luke."· Obi-Wan Kenobi
> (This company dedicates this E-Mail to General Obi-Wan Kenobi )
> (This company dedicates this E-Mail to Master Yoda )
>
>
>
> >
Original Message
> > From: Jessie Prior [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=BYYjrbGMfhbYtiZCDbtbE6aE9MnicKMKOJ5cTxKTuK4OxniTTLJQj9_41zT3MMwShZOtuFGbtpigs3jKMSA8pA]gymgurly41089@y...[/url
> > Sent: Sunday, January 11, 2004 6:57 PM
> > To: basicstamps@yahoogroups.com
> > Subject: [noparse][[/noparse]basicstamps] dont email me ever again!
> >
> > DO NOT SEND ME ANOTHER EMAIL!!!!!!! THANKYOU
> > franksmith512 <franksmith512@y...> wrote:Hi Everyone!
> >
> > My project is going really well! I think I am down to just one
> > technical hicup for my little robot.
> >
> > Currently reading a DigiTape Plus electronic measuring tape. It has
> > a serial port on it.
> >
> > Looks like I am getting probably all the information. Am having a
> > little problem and it is probably related to my variable and/or
> SERIN
> > formatting.
> >
> > Example Input String:
> > " 5 ft 2 1/16 in"
> >
> > I added the quotes so you would know exactly what it looks like.
> > Already wrote code to parse the string. Have to have it for another
> > part of the project.
> >
> > My code looks something like:
> >
> > Loop:
> > SEROUT .... 'Request data
> > SERIN TapeIn, N1200, ????????
> >
> > '.... process'
> >
> > GOTO Loop:
> >
> > Please include how you would define the variable to hold the string.
> >
> > Thanks!
> >
> > Take care,
> > Frank
> >
> >
> >
> >
> >
> >
> > To UNSUBSCRIBE, just send mail to:
> > basicstamps-unsubscribe@yahoogroups.com
> > from the same email address that you subscribed. Text in the Subject
> and Body of
> > the message will be ignored.
> >
> >
> > Yahoo! Groups Links
> >
> > To visit your group on the web, go to:
> > http://groups.yahoo.com/group/basicstamps/
> >
> > To unsubscribe from this group, send an email to:
> > basicstamps-unsubscribe@yahoogroups.com
> >
> > Your use of Yahoo! Groups is subject to:
> > http://docs.yahoo.com/info/terms/
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> >
> >
> >
> >
> > Do you Yahoo!?
> > Yahoo! Hotjobs: Enter the "Signing Bonus" Sweepstakes
> >
> > [noparse][[/noparse]Non-text portions of this message have been removed]
> >
> >
> > To UNSUBSCRIBE, just send mail to:
> > basicstamps-unsubscribe@yahoogroups.com
> > from the same email address that you subscribed. Text in the
> Subject and Body of
> > the message will be ignored.
> >
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> >
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>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 10
> Date: Sun, 11 Jan 2004 17:11:08 -0800
> From: "Aristides Alvarez" <aristidesparallax@y...>
> Subject: Re: DO NOT EMAIL ME AGAIN... (How to unsubscribe)
>
> Dear Jessie.
>
> >
Original Message
> > From: "Jessie Prior" <gymgurly41089@y...>
> > Subject: [noparse][[/noparse]basicstamps] DO NOT EMAIL ME AGAIN... TAKE MY ADDRESS OFF OF UR
> LIST!!!!!!
> > DO NOT SEND ME ANOTHER EMAIL!!!!!!! THANKYOU
> >
> > To unsubscribe from this group, send an email to:
> > basicstamps-unsubscribe@yahoogroups.com
> >
>
> As the footer of EVERY SINGLE email on this forum says, you have to
> unsubscribe yourself sending an email to:
> basicstamps-unsubscribe@yahoogroups.com
>
> Please send the email To that address From your subscribed email address
> (gymgurly41089@y...) and you'll be automatically out of this list.
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> You can also unsubscribe on-line at:
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> Saludos,
> Aristides Alvarez
> International Education Program Developer
> aalvarez@p...
> Parallax, Inc. www.parallax.com
> California, USA
>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 11
> Date: Sun, 11 Jan 2004 18:24:21 -0700
> From: "Shawn Lowe" <livinlowe@e...>
> Subject: Re: Servo usage with power supply!!
>
> Ok, I see where the power is connected to the servos on the BOE. It is
> located just below the 4 servo hook up spots.
> Yes, mine seems to be connected to Vin as well.
>
>
>
> > [noparse][[/noparse]Original Message]
> > From: <Newzed@a...>
> > To: <basicstamps@yahoogroups.com>
> > Date: 1/11/2004 2:22:01 PM
> > Subject: Re: [noparse][[/noparse]basicstamps] Servo usage with power supply!!
> >
> > In a message dated 1/11/2004 4:15:40 PM Eastern Standard Time,
> > jwilliams@p... writes:
> >
> >
> > > I'm in a hotel at the moment without access to a Rev B BOE, but I think
> > > the default trace routes Vdd to the servo power connection. You can cut
> > > a trace and solder a jumper to route Vin instead. The Rev C BOE now
> > > includes a shunt that allows you to select between Vdd and Vin for the
> > > servos.
> > >
> >
> > Hi, Jon
> >
> > Just measured the servo port. Default trace is Vin.
> >
> > Where are you - Holland?
> >
> > Sid
> >
> >
> > [noparse][[/noparse]Non-text portions of this message have been removed]
> >
> >
> > To UNSUBSCRIBE, just send mail to:
> > basicstamps-unsubscribe@yahoogroups.com
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> Body of the message will be ignored.
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> >
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> >
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> >
>
>
>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 12
> Date: Mon, 12 Jan 2004 02:14:49 -0000
> From: "fab4442003" <fab4442003@y...>
> Subject: Can you get 110 milliamps from a 9V battery?
>
> I have a 9V transistor battery connected thru a 7805 5V regulator to
> provide 5V to a chip that requires 110 milliamps (a General
> Instruments Allophone Speech chip). Per the 7805 data sheet, I have a
> .3 uF cap on the input side and .1 uF cap on the output (5V side) of
> the regulator. I have the ground pin of the regulator connected to Vss
> on my BS2 Homework board. The 'run' light on the BS2 Homework board
> blinks on and after 15 seconds turns off - which appears to be the
> correct execution time for my program. During troubleshooting this
> circuit, I found the output of the regulator is only .04V when
> connected to the chip. So either there's a short in my circuit or this
> chip is pulling too much current from my 5V source.
>
> Last qustion - is there a simple way to verify a crystal is working
> (without the use of a scope)?
>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 13
> Date: Sun, 11 Jan 2004 18:24:22 -0800
> From: "Gary W. Sims" <simsgw@c...>
> Subject: Re: Dang, my loop is to slow...
>
> From: <laurasdog@w...>
> >
> >> It's fairly straightforward to build an external circuit to
> >> provide that clock pulse and then enable it with the Stamp
> >> pin instead of actually creating the pulse from the Stamp.
> >> Would a 2 kHz clock with a pulse width of 200 us be what
> >> you're trying to create?
> >
> > Gary, yes I need a clock pulse that I can vary from around
> > 500 Hz to almost 2 KHz. The pulse train is a specific number
> > of pulses long, with the exact number to be read from a
> > variable. It could be anywhere from about ten pulses all the
> > way up to several thousand pulses.
> >
> Okay, for what it's worth, here's how I'd go about designing such a circuit.
> I suspect one of our number will be able to tell you "buy a Widget 409 and
> read the app notes" but personally I don't know a specific part off hand. It
> may help to see how I would go about finding what I need if this were my
> application. Grabbing a catalog is not helpful until I understand what I'm
> trying to find. So I would build a notional circuit in my mind like this:
>
> Requirements: what do we need to control?
>
> 1. The pulse frequency: a range from 500 Hz to 2 kHz.
>
> 2. The pulse count. Must be exact -- not based on time duration, but an
> actual count.
>
> We do NOT need to control the pulse width. We can let it arise from our
> other design choices within reason. From your earlier comments, I infer that
> we can choose a convenient pulse width for all frequencies, so long as it
> meets a minimum width required by the downstream circuits. 200 us I believe
> you said, and a fifty percent duty cycle at 2 kHz would provide a pulse
> width of 250 us. So as we choose parts we can keep in mind "about 250 us"
> without creating other problems.
>
> Now creating pulse trains of this frequency is not a job for interpreted
> software. If we ran into this need every day, Parallax easily could put such
> a function into firmware, but it's not common enough for them to have
> considered it I'm sure. Besides, we tie up the microcontroller completely if
> we use it to generate a long pulse train, and we might have other useful
> things to do. (Even at 2 kHz, thousands of pulses takes more than one
> second, and that's a very long time to a microprocessor.) So we want to
> control the creation of each pulse train from our PBasic program in the
> Stamp, but we'll generate it externally.
>
> For the sake of simplicity, I'll assume we can spare enough pins on the
> Stamp to output the pulse count value in parallel. That is, we can use a
> statement like:
>
> OUTL=PulseCount
>
> to put the count on the pins where it can control the external circuit.
> Actually, I assume we will need at least ten pins since you specified a
> count "into the thousands" but I won't complicate that example by adding the
> code to put all ten bits on the output pins.
>
> Obviously, the simplest device to do all this would be a single integrated
> circuit. If we can find one, it will be called something like: "count-down
> counter with oscillator." I'll describe the use of this hypothetical perfect
> chip first, and then talk about how to divide up the functions if we can't
> find a single "perfect" chip that does the job.
>
> It will have 10 to 14 pins that are how we enter the starting value for the
> count. Those pins will latch the presented value when we put a high on a pin
> called "enable input" or something similar. The counter will begin to count
> down when we put a high on a pin called "enable count" or, again, something
> similar. Obviously, in accordance with the whims of chip designers, either
> enable pin might require a low instead of a high, but we don't care about
> such differences until we actually start to wire and code.
>
> The oscillator part of that chip name means it has pins for a resistor and a
> capacitor -- or perhaps just a resistor, with the capacitor on board
> already. This will be how we control the frequency.
>
> So the procedure for using this hypothetical chip we'd really like to find
> goes like this:
>
> Step 1. Set the frequency for the on-chip oscillator. If you have a small
> number of fixed frequencies that will be required, then you can do this
> easily with an analog multiplexer. Dedicating three pins to address this
> chip will give us eight different frequencies, and they can be pretty much
> arbitrary frequencies. I won't get into design tricks unless you actually go
> this way, but an analog multiplexer gives you a simple circuit path from one
> input pin to eight output pins. That's eight different circuit paths. You
> can arrange for each one to present a different resistance to the pins that
> control that oscillator. The Stamp picks the frequency by picking the
> resistance, which it does by picking which output pin is addressed on the
> multiplexer. And it does that by putting the three-bit address on three of
> its own output pins. Simpler to do then it is to say. Much.
>
> If we need a greater selection of frequencies, and especially if they are
> not pre-determined, then a digital potentiometer will be required. Their
> interface is slightly more complex from a programming point of view, but in
> exchange they provide more possible resistance values. On the other hand,
> those values are not arbitrary, but must fall on a linear scale with a step
> size that is fixed once you buy the pot. App notes abound on using a digital
> pot.
>
> Now we have set up the oscillator to provide anything from a few hundred to
> a few thousand pulses per second to the counter circuit.
>
> 2. Put the count of pulses required on the output pins of the Stamp. Set
> them to output mode. Pulse the Stamp pin tied to the latch enable with a
> high or a low as appropriate. This will load the count value into the
> counter register.
>
> 3. Enable the counter chip. This will start the emission of pulses.
> Depending on the number of downstream circuits, we may have to feed the
> output pulse of the counter to a driver, but that's a separate part of the
> design.
>
> 4. Hopefully, the chip we chose has a stop-when-count-reaches-zero feature.
> If so, it will have a status pin that we tie to a final Stamp pin so we can
> tell when the pulse train is complete. We can check this pin periodically
> while we do other things, or we can just wait in a tight loop until that pin
> changes state. If it doesn't have such a feature (which seems unlikely)
> there are other ways to stop the pulses when count reaches zero.
>
> Comments:
>
> A typical oscillator circuit will output roughly a square wave with a fifty
> percent duty cycle. If our highest frequency is 2 kHz, then the high side of
> that wave will never be less than 250 us. It may be as long as one
> millisecond for the low frequencies. I postulated that we have no need to
> control pulse width, but if pulses too long turn out to be a problem then
> you need to configure a 555 as a one-shot. With that chip, you feed it the
> output of the counter and use the 555 to explicitly control the pulse width
> seen by the downstream circuits.
>
> It's likely that a counter chip is available with all those functions in one
> form or another. If we have to break this up into multiple chips, it still
> won't be many. First, a 555 will provide the pulse source for us and you
> still control the frequency with a variable resistance, just as I described
> above. Oscillators are pretty straightforward and available in many flavors,
> but a 555 is a standby available at any local five and dime. (Well, okay.
> Any local Radio Shack or equal<g>.) Most important, you can find app notes
> everywhere for 555 circuits.
>
> The output of the pulse source must be used to pulse a counter set to count
> down. Such counters always have an interface to load the initial value, and
> we simply limit our choices to one that offers a pin that tells us when it
> reaches zero. We use that pin to stop the count if it doesn't already do
> that.
>
> I don't have time to do a parts search for the specific parts we'd need for
> this circuit, but you shouldn't have too much trouble finding what you need
> on Digikey or Mouser with all those keywords to work with: count-down,
> counter, oscillator, and so forth.
>
> Send me a private note if I've muddied the water too much. This is one of
> those simple things to do, that take a long time to describe.
>
> Gary
>
>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 14
> Date: Sun, 11 Jan 2004 10:29:16 +0100
> From: Rene Genest <rene.genest@q...>
> Subject: Re: DAQ
>
> Hi Sid!
>
> Sometime everything ma be so confused even if it is really simple! Now I
> understand
> that Pin 16 is connected to DB9 instead of the pin # 16 on the BS2, and
> after
> rerereading carefully the explication , I found that I did not write the
> directives on
> CAPITALS letters!!!!!!!!!!!!!! I know it sound stupid to be stuck just by so
> ridiculous mistakes but when we finally get through we just wonder to see it
> work
> and say " IT'S ALIIIIIIIVE!!!!!!!! "
>
> Thanks a lot to everybody!
> Rene
>
> Newzed@a... a écrit :
>
> > In a message dated 1/11/2004 5:53:32 PM Eastern Standard Time,
> > rene.genest@q... writes:
> >
> > > I've just download DAQ from Parallax website, when I start it and
> > > accept macro, the Stamp DAQ interface
> > > appear and display "press F-1 for help", I did, and I've printed the
> > > few documentation pages. On their example, they
> > > say.
> > >
> > > sPin CON 16 'Serial Pin - P16, programming port
> > >
> > > But pins might be from 0 to 15? Is it?
> > >
> > > Is the DAQ should communicate with BS2 by the same DB9 from the
> > > experimentation board to COM-1 as we do when we download code in it?
> > > How can I find more documentation about connect and use
> >
> > DAQ communictes with Stamp ONLY via Pin 16, just like debug.
> > Sid Weaver
> > W4EKQ
> > Port Richey, FL
> >
> > [noparse][[/noparse]Non-text portions of this message have been removed]
> >
> > To UNSUBSCRIBE, just send mail to:
> > basicstamps-unsubscribe@yahoogroups.com
> > from the same email address that you subscribed. Text in the Subject and
> Body of the message will be ignored.
> >
> >
> > Yahoo! Groups Links
> >
> > To visit your group on the web, go to:
> > http://groups.yahoo.com/group/basicstamps/
> >
> > To unsubscribe from this group, send an email to:
> > basicstamps-unsubscribe@yahoogroups.com
> >
> > Your use of Yahoo! Groups is subject to:
> > http://docs.yahoo.com/info/terms/
>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 15
> Date: Mon, 12 Jan 2004 02:32:12 -0000
> From: "franksmith512" <franksmith512@y...>
> Subject: Re: SERIN Help Please - Thanks
>
> Thanks guys! That will probably work. I will try it after this post.
>
> I had tried [noparse][[/noparse]buffer\8] and of course it was out of sync. When I
> tried [noparse][[/noparse]buffer\16], it stopped. SERIN was probably waiting for all 16
> chars.
>
> The answer is more than likely watching for the "in".
>
> Thanks,
> Frank
>
>
>
> --- In basicstamps@yahoogroups.com, Newzed@a... wrote:
> > In a message dated 1/11/2004 7:28:29 PM Eastern Standard Time,
> > jwilliams@p... writes:
> >
> >
> > > Based on his original post, he might use "n" as the ending
> character --
> > > that appears in his string and after the second portion of his
> > > measurement.
> > >
> >
> > Good thought, Jon [noparse]:)[/noparse])
> >
> >
> > [noparse][[/noparse]Non-text portions of this message have been removed]
>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 16
> Date: Sun, 11 Jan 2004 19:07:49 -0800
> From: "Al Margolis\(TX\)" <al@b...>
> Subject: RE: Can you get 110 milliamps from a 9V battery?
>
> 110 ma is only .11A, so you aren't drawing too much current, unless you have
> a short.
>
> Disconnect everything from the 7805's Vout and make sure you are getting 5v.
> Then start reconnecting the circuit in steps while periodically rechecking
> Vout.
>
> -- Al Margolis, founder
> www.hobbyengineering.com
> The technology builder's source for kits, components, supplies, tools, books
> and education.
>
>
Original Message
> From: fab4442003 [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=PWwVxPb_SutmT6AhcbZE39HOV80GcjK5m_eEE_HeAw21lfmiyZ1kRPgQMAO9tLETJGHbuA_Mg5I80Y52Cw]fab4442003@y...[/url
> Sent: Sunday, January 11, 2004 6:15 PM
> To: basicstamps@yahoogroups.com
> Subject: [noparse][[/noparse]basicstamps] Can you get 110 milliamps from a 9V battery?
>
>
> I have a 9V transistor battery connected thru a 7805 5V regulator to
> provide 5V to a chip that requires 110 milliamps (a General
> Instruments Allophone Speech chip). Per the 7805 data sheet, I have a
> .3 uF cap on the input side and .1 uF cap on the output (5V side) of
> the regulator. I have the ground pin of the regulator connected to Vss
> on my BS2 Homework board. The 'run' light on the BS2 Homework board
> blinks on and after 15 seconds turns off - which appears to be the
> correct execution time for my program. During troubleshooting this
> circuit, I found the output of the regulator is only .04V when
> connected to the chip. So either there's a short in my circuit or this
> chip is pulling too much current from my 5V source.
>
> Last qustion - is there a simple way to verify a crystal is working
> (without the use of a scope)?
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed. Text in the Subject and
> Body of the message will be ignored.
>
>
> Yahoo! Groups Links
>
> To visit your group on the web, go to:
> http://groups.yahoo.com/group/basicstamps/
>
> To unsubscribe from this group, send an email to:
> basicstamps-unsubscribe@yahoogroups.com
>
> Your use of Yahoo! Groups is subject to:
> http://docs.yahoo.com/info/terms/
>
>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 17
> Date: Mon, 12 Jan 2004 03:17:59 -0000
> From: "franksmith512" <franksmith512@y...>
> Subject: Re: SERIN Help Please - Works! Thanks!
>
> Watching for the ending "n" did the trick!
>
> Thanks again,
> Frank
>
>
>
> --- In basicstamps@yahoogroups.com, Newzed@a... wrote:
> > In a message dated 1/11/2004 7:28:29 PM Eastern Standard Time,
> > jwilliams@p... writes:
> >
> >
> > > Based on his original post, he might use "n" as the ending
> character --
> > > that appears in his string and after the second portion of his
> > > measurement.
> > >
> >
> > Good thought, Jon [noparse]:)[/noparse])
> >
> >
> > [noparse][[/noparse]Non-text portions of this message have been removed]
>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 18
> Date: Sun, 11 Jan 2004 22:58:08 -0500
> From: Chuck Britton <britton@a...>
> Subject: Re: Can you get 110 milliamps from a 9V battery?
>
> check that your 9 volt battery is still 'fresh'.
>
>
>
> At 2:14 AM +0000 1/12/04, fab4442003 wrote:
> >I have a 9V transistor battery connected thru a 7805 5V regulator to
> >provide 5V to a chip that requires 110 milliamps (a General
> >Instruments Allophone Speech chip). Per the 7805 data sheet, I have a
> >.3 uF cap on the input side and .1 uF cap on the output (5V side) of
> >the regulator. I have the ground pin of the regulator connected to Vss
> >on my BS2 Homework board. The 'run' light on the BS2 Homework board
> >blinks on and after 15 seconds turns off - which appears to be the
> >correct execution time for my program. During troubleshooting this
> >circuit, I found the output of the regulator is only .04V when
> >connected to the chip. So either there's a short in my circuit or this
> >chip is pulling too much current from my 5V source.
>
> --
> Chuck Britton Education is what is
left when
> britton@n... you have forgotten everything
> North Carolina School of Science & Math you learned in school.
> (919) 416-2762 Albert Einstein,
1936
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 19
> Date: Mon, 12 Jan 2004 04:03:57 -0000
> From: "fab4442003" <fab4442003@y...>
> Subject: Re: Can you get 110 milliamps from a 9V battery?
>
> Thanks for the feedback. I just found out something I never knew on my
> 20 year old Radio Shack breadboard - the SIDE rails on both edges of
> the breadboard are connected down the entire length of the breadboard!
> Time to rewire this thing...
>
> > 110 ma is only .11A, so you aren't drawing too much current, unless
> you have
> > a short.
> >
> > Disconnect everything from the 7805's Vout and make sure you are
> getting 5v.
> > Then start reconnecting the circuit in steps while periodically
> rechecking
> > Vout.
> >
> > -- Al Margolis, founder
> > www.hobbyengineering.com
> > The technology builder's source for kits, components, supplies,
> tools, books
> > and education.
> >
> >
Original Message
> > From: fab4442003 [noparse][[/noparse]mailto:fab4442003@y...]
> > Sent: Sunday, January 11, 2004 6:15 PM
> > To: basicstamps@yahoogroups.com
> > Subject: [noparse][[/noparse]basicstamps] Can you get 110 milliamps from a 9V battery?
> >
> >
> > I have a 9V transistor battery connected thru a 7805 5V regulator to
> > provide 5V to a chip that requires 110 milliamps (a General
> > Instruments Allophone Speech chip). Per the 7805 data sheet, I have a
> > .3 uF cap on the input side and .1 uF cap on the output (5V side) of
> > the regulator. I have the ground pin of the regulator connected to Vss
> > on my BS2 Homework board. The 'run' light on the BS2 Homework board
> > blinks on and after 15 seconds turns off - which appears to be the
> > correct execution time for my program. During troubleshooting this
> > circuit, I found the output of the regulator is only .04V when
> > connected to the chip. So either there's a short in my circuit or this
> > chip is pulling too much current from my 5V source.
> >
> > Last qustion - is there a simple way to verify a crystal is working
> > (without the use of a scope)?
>
>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 20
> Date: Mon, 12 Jan 2004 05:25:23 -0000
> From: "arridh_shashank" <arridh_shashank@y...>
> Subject: Re: opto circuit
>
> Hey
>
> If one was to try use an opto isolator how would they go about it?
> I have read a few pages about them and it seems sort of confusing is
> there a straight forward way to impliment them with the stamp + is
> there a prefered opto isolator that would be ideal for use with the
> stamp??
>
> Rgds
> Arridh
>
>
>
> --- In basicstamps@yahoogroups.com, "Jon Williams" <jwilliams@p...>
> wrote:
> > Of course you can, but most of the time the addition of a simple
> series
> > resistor (220 ohms) will save your Stamp from accidents. We now
> build
> > in 220 ohm resistors on every IO pin on the BS2 Homework Board and
> the
> > BS1 Project Board. Note that both of these boards use built-in
> Stamp
> > circuits, so if you're using a Stamp module or stock BOE, you'll
> need to
> > add the 220s yourself.
> >
> > I carry as small plastic box of resistors. The box has five
> > compartments. Here's how the box is stocked and why:
> >
> > 220 - pin protection
> > 470 - LEDs (a few)
> > 1K - LEDs (a bunch, ie 7-segment)
> > 4.7K - I2C and 1-Wire buss pull-ups
> > 10K - switch input pull-up/pull-down
> >
> >
> > -- Jon Williams
> > -- Parallax
> >
> >
> >
Original Message
> > From: fatboyhd2k [noparse][[/noparse]mailto:fatboyhd2k@y...]
> > Sent: Sunday, January 11, 2004 12:13 PM
> > To: basicstamps@yahoogroups.com
> > Subject: [noparse][[/noparse]basicstamps] opto circuit
> >
> >
> > Hi,
> > I'm new to the basic stamp and haven't used one yet. I see the
> posts
> > about burning up outputs, is it possible to add a optical isolator
> > to the outputs and save the output?
> > Later
> >
> >
> >
> > To UNSUBSCRIBE, just send mail to:
> > basicstamps-unsubscribe@yahoogroups.com
> > from the same email address that you subscribed. Text in the
> Subject
> > and Body of the message will be ignored.
> >
> >
> > Yahoo! Groups Links
> >
> > To visit your group on the web, go to:
> > http://groups.yahoo.com/group/basicstamps/
> >
> > To unsubscribe from this group, send an email to:
> > basicstamps-unsubscribe@yahoogroups.com
> >
> > Your use of Yahoo! Groups is subject to:
> > http://docs.yahoo.com/info/terms/
> >
> >
> >
> >
> > This message has been scanned by WebShield. Please report SPAM to
> > abuse@p...
>
>
>
> ________________________________________________________________________
> ________________________________________________________________________
>
> Message: 21
> Date: Mon, 12 Jan 2004 06:49:51 -0000
> From: "James Dang" <ensignkim113@y...>
> Subject: PCB etching
>
> Hi,
>
> I'm working on a soccer robot and am up to etching the PCB. I've
> got pretty much all the equipment. Now, I'm not sure whether to do
> it manually with an etch resistant pen, or to use a comptuer program
> and use a toner etch resist transfer.
>
> The problem I see with doing it manually is that I need some kind of
> a stencil to draw the sections where the IC's are going to go and so
> on.. Does anyone know of such a stencil and where I could get one?
>
> The problem I see with doing it with a computer program is I can't
> find a program where I can design it (with all the symbols aready in
> the program) and then print it where it's 1:1 with t
Comments
http://groups.yahoo.com/group/javelinstamp/
-- Jon Williams
-- Parallax
Original Message
From: biamonte@c... [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=D-E7nkwbbVEgj-6whGkOLmm7f5V7GTNut95OXLJ9eP_cT_2iDgZYHpE2rECi2Nva_0a_0GScMr04sOPH]biamonte@c...[/url
Sent: Monday, January 12, 2004 11:12 AM
To: basicstamps@yahoogroups.com
Subject: [noparse][[/noparse]basicstamps] Forum?
Hello all,
I am new to the list and joined because I had a specific question about SERIN
and buffers, as it turns out I did not even have to ask this question because
someone else already did and it was answered and I have only been on this list
for a few days...
This brings me to this question, I am sure that the same questions keep coming
up so I was wondering if parallax could start a forum much like the one that
Sun has for Java. I think this will be extremely helpful. Maybe one already
is out there, but I could not find it.
Well anyway, I got my Java application controlling a few servos through the com
port finally... I look forward to remaining a member of this mailing list.
Regards,
Jake-
Quoting basicstamps@yahoogroups.com:
> There are 25 messages in this issue.
>
> Topics in this digest:
>
> 1. RE: SERIN Help Please
> From: "Jon Williams" <jwilliams@p...>
> 2. dont email me ever again!
> From: Jessie Prior <gymgurly41089@y...>
> 3. DO NOT EMAIL ME AGAIN!!!!!!!!!!!!!
> From: Jessie Prior <gymgurly41089@y...>
> 4. DO NOT EMAIL ME AGAIN TAKE ME OFF UR LIST!!!!!!!!!!!!!!
> From: Jessie Prior <gymgurly41089@y...>
> 5. DO NOT EMAIL ME AGAIN... TAKE MY ADDRESS OFF OF UR LIST!!!!!!
> From: Jessie Prior <gymgurly41089@y...>
> 6. Re: SERIN Help Please
> From: Newzed@a...
> 7. RE: SERIN Help Please
> From: "Jon Williams" <jwilliams@p...>
> 8. Re: SERIN Help Please
> From: Newzed@a...
> 9. RE: dont email me ever again!
> From: "Gregg C Levine" <hansolofalcon@w...>
> 10. Re: DO NOT EMAIL ME AGAIN... (How to unsubscribe)
> From: "Aristides Alvarez" <aristidesparallax@y...>
> 11. Re: Servo usage with power supply!!
> From: "Shawn Lowe" <livinlowe@e...>
> 12. Can you get 110 milliamps from a 9V battery?
> From: "fab4442003" <fab4442003@y...>
> 13. Re: Dang, my loop is to slow...
> From: "Gary W. Sims" <simsgw@c...>
> 14. Re: DAQ
> From: Rene Genest <rene.genest@q...>
> 15. Re: SERIN Help Please - Thanks
> From: "franksmith512" <franksmith512@y...>
> 16. RE: Can you get 110 milliamps from a 9V battery?
> From: "Al Margolis\(TX\)" <al@b...>
> 17. Re: SERIN Help Please - Works! Thanks!
> From: "franksmith512" <franksmith512@y...>
> 18. Re: Can you get 110 milliamps from a 9V battery?
> From: Chuck Britton <britton@a...>
> 19. Re: Can you get 110 milliamps from a 9V battery?
> From: "fab4442003" <fab4442003@y...>
> 20. Re: opto circuit
> From: "arridh_shashank" <arridh_shashank@y...>
> 21. PCB etching
> From: "James Dang" <ensignkim113@y...>
> 22. Re: PCB etching
> From: "Peter NL" <tfro@b...>
> 23. SV: Re: PCB etching
> From: "Trygve Henriksen" <trygve.henriksen@v...>
> 24. SV: Re: PCB etching
> From: "James Dang" <ensignkim113@y...>
> 25. RE: Re: PCB etching
> From: "Al Williams" <alw@a...>
>
>
> ______________________________________________________________________
> __
> ________________________________________________________________________
>
> Message: 1
> Date: Sun, 11 Jan 2004 15:32:52 -0800
> From: "Jon Williams" <jwilliams@p...>
> Subject: RE: SERIN Help Please
>
> You can specify an ending character that will cause the rest of the
> array to be filled with zeros; if you don't SERIN will wait until
> enough bytes arrive.
>
> -- Jon Williams
> -- Parallax
>
>
>
Original Message
> From: Newzed@a... [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=FawgLk7WabJ4INu4iH1H5i3HtIuHxGhs6bvgktmsBA_fdG88EK7iCs5B23W2-brvzQl6SD5tsHfT]Newzed@a...[/url
> Sent: Sunday, January 11, 2004 3:38 PM
> To: basicstamps@yahoogroups.com
> Subject: Re: [noparse][[/noparse]basicstamps] SERIN Help Please
>
>
> In a message dated 1/11/2004 4:35:35 PM Eastern Standard Time,
> jwilliams@p... writes:
>
>
> > If you're using any of the BS2 family you can do it like this:
> >
> > buffer VAR Byte(16)
> >
> > Main:
> > ' request data
> > SERIN TapeIn, 17197, [noparse][[/noparse]buffer\16]
> > ' process data
> >
> >
>
> Jon, what happens if the incoming string is less than 16 bytes. I was
> getting ready to tell him the same thing, but then I couldn't answer the
> above
> question.
>
> Sid
>
>
> [noparse][[/noparse]Non-text portions of this message have been removed]
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed. Text in the Subject
> and Body of the message will be ignored.
>
>
> Yahoo! Groups Links
>
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> Message: 2
> Date: Sun, 11 Jan 2004 15:56:31 -0800 (PST)
> From: Jessie Prior <gymgurly41089@y...>
> Subject: dont email me ever again!
>
> DO NOT SEND ME ANOTHER EMAIL!!!!!!! THANKYOU
> franksmith512 <franksmith512@y...> wrote:Hi Everyone!
>
> My project is going really well! I think I am down to just one
> technical hicup for my little robot.
>
> Currently reading a DigiTape Plus electronic measuring tape. It has
> a serial port on it.
>
> Looks like I am getting probably all the information. Am having a
> little problem and it is probably related to my variable and/or SERIN
> formatting.
>
> Example Input String:
> " 5 ft 2 1/16 in"
>
> I added the quotes so you would know exactly what it looks like.
> Already wrote code to parse the string. Have to have it for another
> part of the project.
>
> My code looks something like:
>
> Loop:
> SEROUT .... 'Request data
> SERIN TapeIn, N1200, ????????
>
> '.... process'
>
> GOTO Loop:
>
> Please include how you would define the variable to hold the string.
>
> Thanks!
>
> Take care,
> Frank
>
>
>
>
>
>
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> Message: 3
> Date: Sun, 11 Jan 2004 15:57:55 -0800 (PST)
> From: Jessie Prior <gymgurly41089@y...>
> Subject: DO NOT EMAIL ME AGAIN!!!!!!!!!!!!!
>
> DO NOT SEND ME ANOTHER EMAIL!!!!!!! THANKYOU
>
>
> Shawn Lowe <livinlowe@e...> wrote:I admit this is confusing
> me too. When I look at the circuit board traces on the back on the BOE
> it looks to me that both the 9 volt battery and the wall wort power
> supply are connected to the same line which is fed into the voltage
> regulator on the BOE. Why shoud a battery power the regulator any
> differently than the Wall wort? I am also doing the experiments in
> WAMC student book.
>
>
> > [noparse][[/noparse]Original Message]
> > From: ll_deep_soul_ll
> > To:
> > Date: 1/11/2004 10:25:05 AM
> > Subject: [noparse][[/noparse]basicstamps] Servo usage with power supply!!
> >
> > Hi guys,
> > When i purchased the basic stamp board of education kit - full kit,
> > with a rev. B board, a rev. F BS2, it also came with a power
> > supply. I wanted to know if I could use the power supply when
> > running my servo which is controlled by the basic stamp or is my
> > only option to use a 9 volt battery? Theres a warning that said the
> > servo recieves power from the VIN, meaning i shouldn't use anything
> > above 6.5VCD when using the servo. I checked the appendix for one
> > of the tutorials on "what is a microcontroller" and it said when
> > using BOE rev. A/B boards, use a 9 volt batter, or a 6 volt battery
> > packing using AA batteries or a DC supply that provides exactly 6
> > volts regardless of the current draw. When i read the back of the
> > power supply that came with the kit, it says its output is 9VDC
> > 300mA. Once again my question is just, if i could use this given
> > power supply to power the servo and everything attached to the board
> > ie. a few IC's, small series circuit.... or resort to buying more 9
> > volt batteries (i don't wanna use the 6 volt AA battery option).
> >
> > Thank you for taking the time to read this, I tried to make it as
> > clear as possible my situation.
> >
> >
> >
> > To UNSUBSCRIBE, just send mail to:
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>
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> Message: 4
> Date: Sun, 11 Jan 2004 15:58:54 -0800 (PST)
> From: Jessie Prior <gymgurly41089@y...>
> Subject: DO NOT EMAIL ME AGAIN TAKE ME OFF UR LIST!!!!!!!!!!!!!!
>
> DO NOT SEND ME ANOTHER EMAIL!!!!!!! THANKYOU
>
>
> fatboyhd2k <fatboyhd2k@y...> wrote:Hi,
> I'm new to the basic stamp and haven't used one yet. I see the posts
> about burning up outputs, is it possible to add a optical isolator
> to the outputs and save the output?
> Later
>
>
>
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>
> Message: 5
> Date: Sun, 11 Jan 2004 16:00:37 -0800 (PST)
> From: Jessie Prior <gymgurly41089@y...>
> Subject: DO NOT EMAIL ME AGAIN... TAKE MY ADDRESS OFF OF UR LIST!!!!!!
>
> DO NOT SEND ME ANOTHER EMAIL!!!!!!! THANKYOU
>
>
> laurasdog@w... wrote:At 09:04 PM 1/10/2004, Tracy
> wrote:
>
> >to be too slow. You might find the instruction timing information at
> >this url useful:
> >
> >
> >(FOR:NEXT) loops are relatively slow. The timing info I have at that
> >URL for the BS2 gives 763 microseconds for each FOR:NEXT, and 220 to
>
>
>
> Tracy, I must say that as a "newby stamper" I'm finding your
> emesystems site to be incredibly helpful. What a wealth of good info.
> My hat's off to you man!
>
> Thanks,
> Steve
>
>
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> ______________________________________________________________________
> __
> ________________________________________________________________________
>
> Message: 6
> Date: Sun, 11 Jan 2004 19:10:28 EST
> From: Newzed@a...
> Subject: Re: SERIN Help Please
>
> In a message dated 1/11/2004 6:36:06 PM Eastern Standard Time,
> jwilliams@p... writes:
>
>
> > You can specify an ending character that will cause the rest of the
> > array to be filled with zeros; if you don't SERIN will wait until
> > enough bytes arrive.
> >
>
> Jon, wouldn't the sending string have to have the same ending
> character.
> >From what I understand the output of his electronic tape is cast in
> >stone.
>
> Sid
>
>
> [noparse][[/noparse]Non-text portions of this message have been removed]
>
>
>
> ______________________________________________________________________
> __
> ________________________________________________________________________
>
> Message: 7
> Date: Sun, 11 Jan 2004 16:25:06 -0800
> From: "Jon Williams" <jwilliams@p...>
> Subject: RE: SERIN Help Please
>
> Based on his original post, he might use "n" as the ending character
> -- that appears in his string and after the second portion of his
> measurement.
>
> -- Jon Williams
> -- Parallax
>
>
>
Original Message
> From: Newzed@a... [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=FawgLk7WabJ4INu4iH1H5i3HtIuHxGhs6bvgktmsBA_fdG88EK7iCs5B23W2-brvzQl6SD5tsHfT]Newzed@a...[/url
> Sent: Sunday, January 11, 2004 6:10 PM
> To: basicstamps@yahoogroups.com
> Subject: Re: [noparse][[/noparse]basicstamps] SERIN Help Please
>
>
> In a message dated 1/11/2004 6:36:06 PM Eastern Standard Time,
> jwilliams@p... writes:
>
>
> > You can specify an ending character that will cause the rest of the
> > array to be filled with zeros; if you don't SERIN will wait until
> > enough bytes arrive.
> >
>
> Jon, wouldn't the sending string have to have the same ending
> character.
>
> >From what I understand the output of his electronic tape is cast in
> stone.
>
> Sid
>
>
> [noparse][[/noparse]Non-text portions of this message have been removed]
>
>
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> Message: 8
> Date: Sun, 11 Jan 2004 19:42:14 EST
> From: Newzed@a...
> Subject: Re: SERIN Help Please
>
> In a message dated 1/11/2004 7:28:29 PM Eastern Standard Time,
> jwilliams@p... writes:
>
>
> > Based on his original post, he might use "n" as the ending character
> > -- that appears in his string and after the second portion of his
> > measurement.
> >
>
> Good thought, Jon [noparse]:)[/noparse])
>
>
> [noparse][[/noparse]Non-text portions of this message have been removed]
>
>
>
> ______________________________________________________________________
> __
> ________________________________________________________________________
>
> Message: 9
> Date: Sun, 11 Jan 2004 20:06:32 -0500
> From: "Gregg C Levine" <hansolofalcon@w...>
> Subject: RE: dont email me ever again!
>
> Hello from Gregg C Levine
> Those of you who wish to leave this list, please follow the
> instructions at the bottom of the message. Or go to the Yahoo Groups
> webpage for this group and follow the steps there. Typically you can
> do so from the page that lists all of your groups.
>
> Gregg C Levine hansolofalcon@w...
>
> "The Force will be with you...Always." Obi-Wan Kenobi
> "Use the Force, Luke."· Obi-Wan Kenobi
> (This company dedicates this E-Mail to General Obi-Wan Kenobi ) (This
> company dedicates this E-Mail to Master Yoda )
>
>
>
> >
Original Message
> > From: Jessie Prior [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=Cv-C47o8IH7VqV8cIXKSInakJGiDek4Eq550eZFXCnmRxYoERDYmASA0DtdLSWkT8_1d9F37O3hVTSr5hkPefVI8]gymgurly41089@y...[/url
> > Sent: Sunday, January 11, 2004 6:57 PM
> > To: basicstamps@yahoogroups.com
> > Subject: [noparse][[/noparse]basicstamps] dont email me ever again!
> >
> > DO NOT SEND ME ANOTHER EMAIL!!!!!!! THANKYOU
> > franksmith512 <franksmith512@y...> wrote:Hi Everyone!
> >
> > My project is going really well! I think I am down to just one
> > technical hicup for my little robot.
> >
> > Currently reading a DigiTape Plus electronic measuring tape. It has
> > a serial port on it.
> >
> > Looks like I am getting probably all the information. Am having a
> > little problem and it is probably related to my variable and/or
> SERIN
> > formatting.
> >
> > Example Input String:
> > " 5 ft 2 1/16 in"
> >
> > I added the quotes so you would know exactly what it looks like.
> > Already wrote code to parse the string. Have to have it for another
> > part of the project.
> >
> > My code looks something like:
> >
> > Loop:
> > SEROUT .... 'Request data
> > SERIN TapeIn, N1200, ????????
> >
> > '.... process'
> >
> > GOTO Loop:
> >
> > Please include how you would define the variable to hold the string.
> >
> > Thanks!
> >
> > Take care,
> > Frank
> >
> >
> >
> >
> >
> >
> > To UNSUBSCRIBE, just send mail to:
> > basicstamps-unsubscribe@yahoogroups.com
> > from the same email address that you subscribed. Text in the Subject
> and Body of
> > the message will be ignored.
> >
> >
> > Yahoo! Groups Links
> >
> > To visit your group on the web, go to:
> > http://groups.yahoo.com/group/basicstamps/
> >
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> > Yahoo! Hotjobs: Enter the "Signing Bonus" Sweepstakes
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> > [noparse][[/noparse]Non-text portions of this message have been removed]
> >
> >
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>
>
> ______________________________________________________________________
> __
> ________________________________________________________________________
>
> Message: 10
> Date: Sun, 11 Jan 2004 17:11:08 -0800
> From: "Aristides Alvarez" <aristidesparallax@y...>
> Subject: Re: DO NOT EMAIL ME AGAIN... (How to unsubscribe)
>
> Dear Jessie.
>
> >
Original Message
> > From: "Jessie Prior" <gymgurly41089@y...>
> > Subject: [noparse][[/noparse]basicstamps] DO NOT EMAIL ME AGAIN... TAKE MY ADDRESS OFF OF UR
> LIST!!!!!!
> > DO NOT SEND ME ANOTHER EMAIL!!!!!!! THANKYOU
> >
> > To unsubscribe from this group, send an email to:
> > basicstamps-unsubscribe@yahoogroups.com
> >
>
> As the footer of EVERY SINGLE email on this forum says, you have to
> unsubscribe yourself sending an email to:
> basicstamps-unsubscribe@yahoogroups.com
>
> Please send the email To that address From your subscribed email
> address
> (gymgurly41089@y...) and you'll be automatically out of this list.
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> You can also unsubscribe on-line at:
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>
> Saludos,
> Aristides Alvarez
> International Education Program Developer aalvarez@p...
> Parallax, Inc. www.parallax.com
> California, USA
>
>
>
> ______________________________________________________________________
> __
> ________________________________________________________________________
>
> Message: 11
> Date: Sun, 11 Jan 2004 18:24:21 -0700
> From: "Shawn Lowe" <livinlowe@e...>
> Subject: Re: Servo usage with power supply!!
>
> Ok, I see where the power is connected to the servos on the BOE. It is
> located just below the 4 servo hook up spots. Yes, mine seems to be
> connected to Vin as well.
>
>
>
> > [noparse][[/noparse]Original Message]
> > From: <Newzed@a...>
> > To: <basicstamps@yahoogroups.com>
> > Date: 1/11/2004 2:22:01 PM
> > Subject: Re: [noparse][[/noparse]basicstamps] Servo usage with power supply!!
> >
> > In a message dated 1/11/2004 4:15:40 PM Eastern Standard Time,
> > jwilliams@p... writes:
> >
> >
> > > I'm in a hotel at the moment without access to a Rev B BOE, but I
> > > think the default trace routes Vdd to the servo power connection.
> > > You can cut a trace and solder a jumper to route Vin instead. The
> > > Rev C BOE now includes a shunt that allows you to select between
> > > Vdd and Vin for the servos.
> > >
> >
> > Hi, Jon
> >
> > Just measured the servo port. Default trace is Vin.
> >
> > Where are you - Holland?
> >
> > Sid
> >
> >
> > [noparse][[/noparse]Non-text portions of this message have been removed]
> >
> >
> > To UNSUBSCRIBE, just send mail to:
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>
>
>
>
> ______________________________________________________________________
> __
> ________________________________________________________________________
>
> Message: 12
> Date: Mon, 12 Jan 2004 02:14:49 -0000
> From: "fab4442003" <fab4442003@y...>
> Subject: Can you get 110 milliamps from a 9V battery?
>
> I have a 9V transistor battery connected thru a 7805 5V regulator to
> provide 5V to a chip that requires 110 milliamps (a General
> Instruments Allophone Speech chip). Per the 7805 data sheet, I have a
> .3 uF cap on the input side and .1 uF cap on the output (5V side) of
> the regulator. I have the ground pin of the regulator connected to Vss
> on my BS2 Homework board. The 'run' light on the BS2 Homework board
> blinks on and after 15 seconds turns off - which appears to be the
> correct execution time for my program. During troubleshooting this
> circuit, I found the output of the regulator is only .04V when
> connected to the chip. So either there's a short in my circuit or this
> chip is pulling too much current from my 5V source.
>
> Last qustion - is there a simple way to verify a crystal is working
> (without the use of a scope)?
>
>
>
> ______________________________________________________________________
> __
> ________________________________________________________________________
>
> Message: 13
> Date: Sun, 11 Jan 2004 18:24:22 -0800
> From: "Gary W. Sims" <simsgw@c...>
> Subject: Re: Dang, my loop is to slow...
>
> From: <laurasdog@w...>
> >
> >> It's fairly straightforward to build an external circuit to
> >> provide that clock pulse and then enable it with the Stamp pin
> >> instead of actually creating the pulse from the Stamp. Would a 2
> >> kHz clock with a pulse width of 200 us be what you're trying to
> >> create?
> >
> > Gary, yes I need a clock pulse that I can vary from around 500 Hz to
> > almost 2 KHz. The pulse train is a specific number of pulses long,
> > with the exact number to be read from a variable. It could be
> > anywhere from about ten pulses all the way up to several thousand
> > pulses.
> >
> Okay, for what it's worth, here's how I'd go about designing such a
> circuit. I suspect one of our number will be able to tell you "buy a
> Widget 409 and read the app notes" but personally I don't know a
> specific part off hand. It may help to see how I would go about
> finding what I need if this were my application. Grabbing a catalog is
> not helpful until I understand what I'm trying to find. So I would
> build a notional circuit in my mind like this:
>
> Requirements: what do we need to control?
>
> 1. The pulse frequency: a range from 500 Hz to 2 kHz.
>
> 2. The pulse count. Must be exact -- not based on time duration, but
> an actual count.
>
> We do NOT need to control the pulse width. We can let it arise from
> our other design choices within reason. From your earlier comments, I
> infer that we can choose a convenient pulse width for all frequencies,
> so long as it meets a minimum width required by the downstream
> circuits. 200 us I believe you said, and a fifty percent duty cycle at
> 2 kHz would provide a pulse width of 250 us. So as we choose parts we
> can keep in mind "about 250 us" without creating other problems.
>
> Now creating pulse trains of this frequency is not a job for
> interpreted software. If we ran into this need every day, Parallax
> easily could put such a function into firmware, but it's not common
> enough for them to have considered it I'm sure. Besides, we tie up the
> microcontroller completely if we use it to generate a long pulse
> train, and we might have other useful things to do. (Even at 2 kHz,
> thousands of pulses takes more than one second, and that's a very long
> time to a microprocessor.) So we want to control the creation of each
> pulse train from our PBasic program in the Stamp, but we'll generate
> it externally.
>
> For the sake of simplicity, I'll assume we can spare enough pins on
> the Stamp to output the pulse count value in parallel. That is, we can
> use a statement like:
>
> OUTL=PulseCount
>
> to put the count on the pins where it can control the external
> circuit. Actually, I assume we will need at least ten pins since you
> specified a count "into the thousands" but I won't complicate that
> example by adding the code to put all ten bits on the output pins.
>
> Obviously, the simplest device to do all this would be a single
> integrated circuit. If we can find one, it will be called something
> like: "count-down counter with oscillator." I'll describe the use of
> this hypothetical perfect chip first, and then talk about how to
> divide up the functions if we can't find a single "perfect" chip that
> does the job.
>
> It will have 10 to 14 pins that are how we enter the starting value
> for the count. Those pins will latch the presented value when we put a
> high on a pin called "enable input" or something similar. The counter
> will begin to count down when we put a high on a pin called "enable
> count" or, again, something similar. Obviously, in accordance with the
> whims of chip designers, either enable pin might require a low instead
> of a high, but we don't care about such differences until we actually
> start to wire and code.
>
> The oscillator part of that chip name means it has pins for a resistor
> and a capacitor -- or perhaps just a resistor, with the capacitor on
> board already. This will be how we control the frequency.
>
> So the procedure for using this hypothetical chip we'd really like to
> find goes like this:
>
> Step 1. Set the frequency for the on-chip oscillator. If you have a
> small number of fixed frequencies that will be required, then you can
> do this easily with an analog multiplexer. Dedicating three pins to
> address this chip will give us eight different frequencies, and they
> can be pretty much arbitrary frequencies. I won't get into design
> tricks unless you actually go this way, but an analog multiplexer
> gives you a simple circuit path from one input pin to eight output
> pins. That's eight different circuit paths. You can arrange for each
> one to present a different resistance to the pins that control that
> oscillator. The Stamp picks the frequency by picking the resistance,
> which it does by picking which output pin is addressed on the
> multiplexer. And it does that by putting the three-bit address on
> three of its own output pins. Simpler to do then it is to say. Much.
>
> If we need a greater selection of frequencies, and especially if they
> are not pre-determined, then a digital potentiometer will be required.
> Their interface is slightly more complex from a programming point of
> view, but in exchange they provide more possible resistance values. On
> the other hand, those values are not arbitrary, but must fall on a
> linear scale with a step size that is fixed once you buy the pot. App
> notes abound on using a digital pot.
>
> Now we have set up the oscillator to provide anything from a few
> hundred to a few thousand pulses per second to the counter circuit.
>
> 2. Put the count of pulses required on the output pins of the Stamp.
> Set them to output mode. Pulse the Stamp pin tied to the latch enable
> with a high or a low as appropriate. This will load the count value
> into the counter register.
>
> 3. Enable the counter chip. This will start the emission of pulses.
> Depending on the number of downstream circuits, we may have to feed
> the output pulse of the counter to a driver, but that's a separate
> part of the design.
>
> 4. Hopefully, the chip we chose has a stop-when-count-reaches-zero
> feature. If so, it will have a status pin that we tie to a final Stamp
> pin so we can tell when the pulse train is complete. We can check this
> pin periodically while we do other things, or we can just wait in a
> tight loop until that pin changes state. If it doesn't have such a
> feature (which seems unlikely) there are other ways to stop the pulses
> when count reaches zero.
>
> Comments:
>
> A typical oscillator circuit will output roughly a square wave with a
> fifty percent duty cycle. If our highest frequency is 2 kHz, then the
> high side of that wave will never be less than 250 us. It may be as
> long as one millisecond for the low frequencies. I postulated that we
> have no need to control pulse width, but if pulses too long turn out
> to be a problem then you need to configure a 555 as a one-shot. With
> that chip, you feed it the output of the counter and use the 555 to
> explicitly control the pulse width seen by the downstream circuits.
>
> It's likely that a counter chip is available with all those functions
> in one form or another. If we have to break this up into multiple
> chips, it still won't be many. First, a 555 will provide the pulse
> source for us and you still control the frequency with a variable
> resistance, just as I described above. Oscillators are pretty
> straightforward and available in many flavors, but a 555 is a standby
> available at any local five and dime. (Well, okay. Any local Radio
> Shack or equal<g>.) Most important, you can find app notes everywhere
> for 555 circuits.
>
> The output of the pulse source must be used to pulse a counter set to
> count down. Such counters always have an interface to load the initial
> value, and we simply limit our choices to one that offers a pin that
> tells us when it reaches zero. We use that pin to stop the count if it
> doesn't already do that.
>
> I don't have time to do a parts search for the specific parts we'd
> need for this circuit, but you shouldn't have too much trouble finding
> what you need on Digikey or Mouser with all those keywords to work
> with: count-down, counter, oscillator, and so forth.
>
> Send me a private note if I've muddied the water too much. This is one
> of those simple things to do, that take a long time to describe.
>
> Gary
>
>
>
>
> ______________________________________________________________________
> __
> ________________________________________________________________________
>
> Message: 14
> Date: Sun, 11 Jan 2004 10:29:16 +0100
> From: Rene Genest <rene.genest@q...>
> Subject: Re: DAQ
>
> Hi Sid!
>
> Sometime everything ma be so confused even if it is really simple! Now
> I understand that Pin 16 is connected to DB9 instead of the pin # 16
> on the BS2, and after
> rerereading carefully the explication , I found that I did not write the
> directives on
> CAPITALS letters!!!!!!!!!!!!!! I know it sound stupid to be stuck just by so
> ridiculous mistakes but when we finally get through we just wonder to see it
> work
> and say " IT'S ALIIIIIIIVE!!!!!!!! "
>
> Thanks a lot to everybody!
> Rene
>
> Newzed@a... a écrit :
>
> > In a message dated 1/11/2004 5:53:32 PM Eastern Standard Time,
> > rene.genest@q... writes:
> >
> > > I've just download DAQ from Parallax website, when I start it and
> > > accept macro, the Stamp DAQ interface appear and display "press
> > > F-1 for help", I did, and I've printed the few documentation
> > > pages. On their example, they say.
> > >
> > > sPin CON 16 'Serial Pin - P16, programming port
> > >
> > > But pins might be from 0 to 15? Is it?
> > >
> > > Is the DAQ should communicate with BS2 by the same DB9 from the
> > > experimentation board to COM-1 as we do when we download code in
> > > it? How can I find more documentation about connect and use
> >
> > DAQ communictes with Stamp ONLY via Pin 16, just like debug. Sid
> > Weaver W4EKQ
> > Port Richey, FL
> >
> > [noparse][[/noparse]Non-text portions of this message have been removed]
> >
> > To UNSUBSCRIBE, just send mail to:
> > basicstamps-unsubscribe@yahoogroups.com
> > from the same email address that you subscribed. Text in the
> > Subject and
> Body of the message will be ignored.
> >
> >
> > Yahoo! Groups Links
> >
> > To visit your group on the web, go to:
> > http://groups.yahoo.com/group/basicstamps/
> >
> > To unsubscribe from this group, send an email to:
> > basicstamps-unsubscribe@yahoogroups.com
> >
> > Your use of Yahoo! Groups is subject to:
> > http://docs.yahoo.com/info/terms/
>
>
>
> ______________________________________________________________________
> __
> ________________________________________________________________________
>
> Message: 15
> Date: Mon, 12 Jan 2004 02:32:12 -0000
> From: "franksmith512" <franksmith512@y...>
> Subject: Re: SERIN Help Please - Thanks
>
> Thanks guys! That will probably work. I will try it after this post.
>
> I had tried [noparse][[/noparse]buffer\8] and of course it was out of sync. When I
> tried [noparse][[/noparse]buffer\16], it stopped. SERIN was probably waiting for all 16
> chars.
>
> The answer is more than likely watching for the "in".
>
> Thanks,
> Frank
>
>
>
> --- In basicstamps@yahoogroups.com, Newzed@a... wrote:
> > In a message dated 1/11/2004 7:28:29 PM Eastern Standard Time,
> > jwilliams@p... writes:
> >
> >
> > > Based on his original post, he might use "n" as the ending
> character --
> > > that appears in his string and after the second portion of his
> > > measurement.
> > >
> >
> > Good thought, Jon [noparse]:)[/noparse])
> >
> >
> > [noparse][[/noparse]Non-text portions of this message have been removed]
>
>
>
> ______________________________________________________________________
> __
> ________________________________________________________________________
>
> Message: 16
> Date: Sun, 11 Jan 2004 19:07:49 -0800
> From: "Al Margolis\(TX\)" <al@b...>
> Subject: RE: Can you get 110 milliamps from a 9V battery?
>
> 110 ma is only .11A, so you aren't drawing too much current, unless
> you have a short.
>
> Disconnect everything from the 7805's Vout and make sure you are
> getting 5v. Then start reconnecting the circuit in steps while
> periodically rechecking Vout.
>
> -- Al Margolis, founder
> www.hobbyengineering.com
> The technology builder's source for kits, components, supplies, tools,
> books and education.
>
>
Original Message
> From: fab4442003 [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=tNVxMHuSGW0D2Vjo9L2w7LZV_9_lar5MhAVumgH94hK1y77fLtajxWyx9XnLNefh7UaVWoVb7tgnKKCOcfo]fab4442003@y...[/url
> Sent: Sunday, January 11, 2004 6:15 PM
> To: basicstamps@yahoogroups.com
> Subject: [noparse][[/noparse]basicstamps] Can you get 110 milliamps from a 9V battery?
>
>
> I have a 9V transistor battery connected thru a 7805 5V regulator to
> provide 5V to a chip that requires 110 milliamps (a General
> Instruments Allophone Speech chip). Per the 7805 data sheet, I have a
> .3 uF cap on the input side and .1 uF cap on the output (5V side) of
> the regulator. I have the ground pin of the regulator connected to Vss
> on my BS2 Homework board. The 'run' light on the BS2 Homework board
> blinks on and after 15 seconds turns off - which appears to be the
> correct execution time for my program. During troubleshooting this
> circuit, I found the output of the regulator is only .04V when
> connected to the chip. So either there's a short in my circuit or this
> chip is pulling too much current from my 5V source.
>
> Last qustion - is there a simple way to verify a crystal is working
> (without the use of a scope)?
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed. Text in the Subject
> and Body of the message will be ignored.
>
>
> Yahoo! Groups Links
>
> To visit your group on the web, go to:
> http://groups.yahoo.com/group/basicstamps/
>
> To unsubscribe from this group, send an email to:
> basicstamps-unsubscribe@yahoogroups.com
>
> Your use of Yahoo! Groups is subject to:
> http://docs.yahoo.com/info/terms/
>
>
>
>
> ______________________________________________________________________
> __
> ________________________________________________________________________
>
> Message: 17
> Date: Mon, 12 Jan 2004 03:17:59 -0000
> From: "franksmith512" <franksmith512@y...>
> Subject: Re: SERIN Help Please - Works! Thanks!
>
> Watching for the ending "n" did the trick!
>
> Thanks again,
> Frank
>
>
>
> --- In basicstamps@yahoogroups.com, Newzed@a... wrote:
> > In a message dated 1/11/2004 7:28:29 PM Eastern Standard Time,
> > jwilliams@p... writes:
> >
> >
> > > Based on his original post, he might use "n" as the ending
> character --
> > > that appears in his string and after the second portion of his
> > > measurement.
> > >
> >
> > Good thought, Jon [noparse]:)[/noparse])
> >
> >
> > [noparse][[/noparse]Non-text portions of this message have been removed]
>
>
>
> ______________________________________________________________________
> __
> ________________________________________________________________________
>
> Message: 18
> Date: Sun, 11 Jan 2004 22:58:08 -0500
> From: Chuck Britton <britton@a...>
> Subject: Re: Can you get 110 milliamps from a 9V battery?
>
> check that your 9 volt battery is still 'fresh'.
>
>
>
> At 2:14 AM +0000 1/12/04, fab4442003 wrote:
> >I have a 9V transistor battery connected thru a 7805 5V regulator to
> >provide 5V to a chip that requires 110 milliamps (a General
> >Instruments Allophone Speech chip). Per the 7805 data sheet, I have a
> >.3 uF cap on the input side and .1 uF cap on the output (5V side) of
> >the regulator. I have the ground pin of the regulator connected to
> >Vss on my BS2 Homework board. The 'run' light on the BS2 Homework
> >board blinks on and after 15 seconds turns off - which appears to be
> >the correct execution time for my program. During troubleshooting
> >this circuit, I found the output of the regulator is only .04V when
> >connected to the chip. So either there's a short in my circuit or
> >this chip is pulling too much current from my 5V source.
>
> --
> Chuck Britton Education is what is
left when
> britton@n... you have forgotten everything
> North Carolina School of Science & Math you learned in school.
> (919) 416-2762 Albert Einstein,
1936
>
>
> ______________________________________________________________________
> __
> ________________________________________________________________________
>
> Message: 19
> Date: Mon, 12 Jan 2004 04:03:57 -0000
> From: "fab4442003" <fab4442003@y...>
> Subject: Re: Can you get 110 milliamps from a 9V battery?
>
> Thanks for the feedback. I just found out something I never knew on my
> 20 year old Radio Shack breadboard - the SIDE rails on both edges of
> the breadboard are connected down the entire length of the breadboard!
> Time to rewire this thing...
>
> > 110 ma is only .11A, so you aren't drawing too much current, unless
> you have
> > a short.
> >
> > Disconnect everything from the 7805's Vout and make sure you are
> getting 5v.
> > Then start reconnecting the circuit in steps while periodically
> rechecking
> > Vout.
> >
> > -- Al Margolis, founder
> > www.hobbyengineering.com
> > The technology builder's source for kits, components, supplies,
> tools, books
> > and education.
> >
> >
Original Message
> > From: fab4442003 [noparse][[/noparse]mailto:fab4442003@y...]
> > Sent: Sunday, January 11, 2004 6:15 PM
> > To: basicstamps@yahoogroups.com
> > Subject: [noparse][[/noparse]basicstamps] Can you get 110 milliamps from a 9V battery?
> >
> >
> > I have a 9V transistor battery connected thru a 7805 5V regulator to
> > provide 5V to a chip that requires 110 milliamps (a General
> > Instruments Allophone Speech chip). Per the 7805 data sheet, I have
> > a .3 uF cap on the input side and .1 uF cap on the output (5V side)
> > of the regulator. I have the ground pin of the regulator connected
> > to Vss on my BS2 Homework board. The 'run' light on the BS2 Homework
> > board blinks on and after 15 seconds turns off - which appears to be
> > the correct execution time for my program. During troubleshooting
> > this circuit, I found the output of the regulator is only .04V when
> > connected to the chip. So either there's a short in my circuit or
> > this chip is pulling too much current from my 5V source.
> >
> > Last qustion - is there a simple way to verify a crystal is working
> > (without the use of a scope)?
>
>
>
>
> ______________________________________________________________________
> __
> ________________________________________________________________________
>
> Message: 20
> Date: Mon, 12 Jan 2004 05:25:23 -0000
> From: "arridh_shashank" <arridh_shashank@y...>
> Subject: Re: opto circuit
>
> Hey
>
> If one was to try use an opto isolator how would they go about it? I
> have read a few pages about them and it seems sort of confusing is
> there a straight forward way to impliment them with the stamp + is
> there a prefered opto isolator that would be ideal for use with the
> stamp??
>
> Rgds
> Arridh
>
>
>
> --- In basicstamps@yahoogroups.com, "Jon Williams" <jwilliams@p...>
> wrote:
> > Of course you can, but most of the time the addition of a simple
> series
> > resistor (220 ohms) will save your Stamp from accidents. We now
> build
> > in 220 ohm resistors on every IO pin on the BS2 Homework Board and
> the
> > BS1 Project Board. Note that both of these boards use built-in
> Stamp
> > circuits, so if you're using a Stamp module or stock BOE, you'll
> need to
> > add the 220s yourself.
> >
> > I carry as small plastic box of resistors. The box has five
> > compartments. Here's how the box is stocked and why:
> >
> > 220 - pin protection
> > 470 - LEDs (a few)
> > 1K - LEDs (a bunch, ie 7-segment)
> > 4.7K - I2C and 1-Wire buss pull-ups
> > 10K - switch input pull-up/pull-down
> >
> >
> > -- Jon Williams
> > -- Parallax
> >
> >
> >
Original Message
> > From: fatboyhd2k [noparse][[/noparse]mailto:fatboyhd2k@y...]
> > Sent: Sunday, January 11, 2004 12:13 PM
> > To: basicstamps@yahoogroups.com
> > Subject: [noparse][[/noparse]basicstamps] opto circuit
> >
> >
> > Hi,
> > I'm new to the basic stamp and haven't used one yet. I see the
> posts
> > about burning up outputs, is it possible to add a optical isolator
> > to the outputs and save the output?
> > Later
> >
> >
> >
> > To UNSUBSCRIBE, just send mail to:
> > basicstamps-unsubscribe@yahoogroups.com
> > from the same email address that you subscribed. Text in the
> Subject
> > and Body of the message will be ignored.
> >
> >
> > Yahoo! Groups Links
> >
> > To visit your group on the web, go to:
> > http://groups.yahoo.com/group/basicstamps/
> >
> > To unsubscribe from this group, send an email to:
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> >
> >
> >
> >
> > This message has been scanned by WebShield. Please report SPAM to
> > abuse@p...
>
>
>
> ______________________________________________________________________
> __
> ____________________________________