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Comments
>
> List-Unsubscribe: <mailto:basicstamps-unsubscribe@egroups.com>
Funny, none of my messages from egroups say this.... maybe that's why we
keep seeing so many unsubscribe messages.
dont.
Norm & Monda
Cozy MK IV #202
Ford V-6 Powered
Original Message
From: <agarb@j...>
To: <basicstamps@egroups.com>
Sent: Sunday, May 21, 2000 6:09 PM
Subject: Re: [noparse][[/noparse]basicstamps]
> > Clearly stated at the bottom of every e-mail is a line which reads:
> >
> > List-Unsubscribe: <mailto:basicstamps-unsubscribe@egroups.com>
>
> Funny, none of my messages from egroups say this.... maybe that's why we
> keep seeing so many unsubscribe messages.
>
>
>
>
Below it is stated that it appears on the bottom of every e-mail, I use Eudora
and it appears in the header. Others say that they never see it at all.
Could
it be a mail program option?
Gene.
At 06:09 PM 5/21/00 -0400, you wrote:
>> Clearly stated at the bottom of every e-mail is a line which reads:
>>
>> List-Unsubscribe: <mailto:basicstamps-unsubscribe@egroups.com>
>
>Funny, none of my messages from egroups say this.... maybe that's why we
>keep seeing so many unsubscribe messages.
>
>
>
>
Gene & Sydelle Norris
mailto:enorris@h...
http://members.home.net/enorris
E. Windsor, NJ USA
unsubscribe info at the bottom of any messages. However, tonight I just
set up the SW to display the full headers and there it was, the
unsubscribe info as stated below.
On Tue, 23 May 2000 08:27:19 -0400 Gene Norris <enorris@h...> writes:
> This message seems to appear or not appear depending on the mail
program used. Below it is stated that it appears on the bottom of every
e-mail, I use Eudora and it appears in the header. Others say that they
never see it at all. Could it be a mail program option?
>>Funny, none of my messages from egroups say this.... maybe that's why
we keep seeing so many unsubscribe messages.
>>> Clearly stated at the bottom of every e-mail is a line which reads:
List-Unsubscribe: <mailto:basicstamps-unsubscribe@egroups.com>
a limited number of hits they can take and when they fail they tend to fail
shorted. The zener is better for this.
At 10:57 PM 6/8/00 +1000, you wrote:
>Keith
>
>You could try inserting a varistor (MOV) across the input supply to the
>7805. Size the varistor to handle the expected surges. You could also try a
>high powered zener diode across the input supply about 20v 5 watts or
>greater in power. You may need a series resistor with the zener diode.
>Remember to allow for the increased voltage while the battery is being
charged.
>
>Anyway hope this helps.
>
>Mark
>
>
>>I am intending to use a Radio Shack 7805 in the TO220 case with a heat
>>sink attached to bring the voltage from an automotive system down to 5V to
>>power a BS2 stamp.
>>The recent comments that indicate spikes as high as 100V could occur when
>>the vehicle brakes are applied and fry the 7805 are very worrying.
>>Is there a way of placing something between the the automotive system and
>>the 7805, to bring the input voltage that the 7805 might see to level that
>>is acceptable to it?
>>With all the electronics on modern cars I would assume there must be a way
>>of protecting them from potential high voltage surges.
>>I would appreciate any ideas.
>>
>
>
>
>
>
>
Larry G. Nelson Sr.
mailto:L.Nelson@i...
http://www.ultranet.com/~nr
If you are using a slow charger, (3 to 24 hours), nicad voltage will rise
very little, and you can leave the load connected during charge. If you use
a fast charger, (30 min to 1 hour), battery voltage can rise several volts
under charge. If the load voltage is regulated, or the load can stand this
rise, you can still keep the load connected.
Ray McArthur
> I am building some battery powered test gear using a stamp. I would like
to
> mount a 9v nicad on the pcb and just have an external jack to plug in a
> power supply to recharge the battery.
>
> Where can I get information on building an in circuit battery charger? Do
I
> have to disconnect the battery from the circuit to recharge it? The
circuit
> will draw no more than 15 ma.
Thanks. Do you Think a wall wart power supply with some current limiting
resistor would trickle charge the 9v nicad overnight?
Steve
Original Message
From: rjmca [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=4LsgCWT-VL1zIQvrrUA_XCPk-dOU8VgYg_FJrYWIQlfo3I28wxYadfEs3Bad2pbo1LLK8fvtrxLnPw]rjmca@w...[/url
Sent: Friday, July 21, 2000 4:58 PM
To: basicstamps@egroups.com
Subject: Re: [noparse][[/noparse]basicstamps]
Steve,
If you are using a slow charger, (3 to 24 hours), nicad voltage will rise
very little, and you can leave the load connected during charge. If you use
a fast charger, (30 min to 1 hour), battery voltage can rise several volts
under charge. If the load voltage is regulated, or the load can stand this
rise, you can still keep the load connected.
Ray McArthur
> I am building some battery powered test gear using a stamp. I would like
to
> mount a 9v nicad on the pcb and just have an external jack to plug in a
> power supply to recharge the battery.
>
> Where can I get information on building an in circuit battery charger? Do
I
> have to disconnect the battery from the circuit to recharge it? The
circuit
> will draw no more than 15 ma.
If the amp-hours=C, and you want to charge in 12 hours, pick a resistor to
give a charge current=C/12. Add about 10-20% for imperfect charge
retention.
> Thanks. Do you Think a wall wart power supply with some current limiting
> resistor would trickle charge the 9v nicad overnight?
> Ray McArthur
> That could work. You have to know the amp-hour capacity of the 9V battery.
> If the amp-hours=C, and you want to charge in 12 hours, pick a resistor to
> give a charge current=C/12. Add about 10-20% for imperfect charge
> retention.
I have done this a number of times--just one suggestion--make sure the walwart
has a high enough current rating--if you push it it will get really hot and
could fail (been there done that) or start a fire. Best to have a capacity of
at leasst twice the anticipated current.
Voltage = Current * Resistance
Here is the total technique
If the battery is 12 volts and is 3 amp hours you will need a charger above 12
volts.
You are going to have to put up to 1.5 x your amps into it to fully charge it.
This means you are going to charge it with 4.5 amp hours
Over the 12 hours 4.5/12 is current. C is about .37 or just under .4 amps.
For a 15 volt transformer 15 = 3.7 * Resistor or about 4 ohms
Last note is to look at that amp rate and make sure the resistor can handle it.
In the old days (god I love to say that) little light bulbs were used as
limiting resistors.
In your example, if the battery voltage rises to 9.5 volts under charge, you
have to drop 15-9.5=5.5 volts across the resistor. Then, R=5.5/.37 or 14.9
ohms. Power is I^2*R=.37*.37*14.9=2 watts. This will get you ball park,
because as you know, most wal-warts have poor regulation, and internal
resistance of batteries varies. This is why it is best to use an ammeter
and set charge current empirically.
Regards,
Ray McArthur
> Over the 12 hours 4.5/12 is current. C is about .37 or just under .4
amps.
>
> For a 15 volt transformer 15 = 3.7 * Resistor or about 4 ohms
>
> Last note is to look at that amp rate and make sure the resistor can
handle it.
> In the old days (god I love to say that) little light bulbs were used as
> limiting resistors.
software reset the Stamp with a spike, but doesn't allow a terminal program
to turn on ATN and hold the Stamp in reset. The shunt to ground rejects
noise.
Regards,
Al Williams
AWC
* Microcontroller Projects with Basic Stamps:
http://www.al-williams.com/awce/sbook.htm
>
Original Message
> From: Steve Welsh [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=-C-hpdAOERjEV32qT3jggnU68uAGFwoVTrrXc1leo0xwtu7esCh11YAyVdcMRah6APmzGdm9uvt4WRyQIdnuqdochlO1]stevew@m...[/url
> Sent: Monday, July 31, 2000 12:06 PM
> To: Basic Stamp list (E-mail)
> Subject: [noparse][[/noparse]basicstamps]
>
>
> I was laying out a board to use a Basic Stamp II. I noticed on
> the Parallax
> super carrier board the ATN line is conditioned with two .1 uf caps one to
> ground the other to pin 4 on the DB9. I cannot find any thing in the
> documentation regarding these caps.
>
> Anybody know what they are for?
> Are they required?
>
> Thanks for the help.
>
>
> Steve Welsh
> email:stevew@m...
>
>
>
>
Parallax
>super carrier board the ATN line is conditioned with two .1 uf caps one to
>ground the other to pin 4 on the DB9. I cannot find any thing in the
>documentation regarding these caps.
Hi Steve,
The one to pin 4 of the DB9 couples the rising edge of the intentional
reset signal through to ATN. A capacitor there is better in most cases
than a direct connection, because lots of terminal software leaves pin 4 of
the DB9 at a steady high level (DTR=data terminal ready), which would put
the stamp into perpetual reset.
The capacitor to ground filters out noise that may be present on the ATN
line, to prevent false resets. A 10kohm resistor in parallel to ground will
provide additional noise immunity.
-- Tracy Allen
Electronically Monitored Ecosystems
http://www.emesystems.com
Steve
>
Original Message
> From: Al Williams [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=hXCKvw-hcVbSYW6EFxnRr764Br1SCL8A__pQ0ASbLhy4JNvXKCTxaz67ciMdvy9gJs6wsJebf0ziix7KgA]alw@a...[/url
> Sent: Monday, July 31, 2000 1:23 PM
> To: basicstamps@egroups.com
> Subject: RE: [noparse][[/noparse]basicstamps]
>
>
> Look in the manual under SERIN (or maybe SEROUT). The cap in
> series lets the
> software reset the Stamp with a spike, but doesn't allow a
> terminal program
> to turn on ATN and hold the Stamp in reset. The shunt to
> ground rejects
> noise.
>
> Regards,
>
> Al Williams
> AWC
> * Microcontroller Projects with Basic Stamps:
> http://www.al-williams.com/awce/sbook.htm
>
>
> >
Original Message
> > From: Steve Welsh [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=fpuWJuZDVKd5e7tKDfrUyy5h4oWilmauIjgejt1kOO41ES_5mbmI4Bv9nVRxyG9sVXkzg9hVCvu-jmhDGqXotYMk]stevew@m...[/url
> > Sent: Monday, July 31, 2000 12:06 PM
> > To: Basic Stamp list (E-mail)
> > Subject: [noparse][[/noparse]basicstamps]
> >
> >
> > I was laying out a board to use a Basic Stamp II. I noticed on
> > the Parallax
> > super carrier board the ATN line is conditioned with two .1
> uf caps one to
> > ground the other to pin 4 on the DB9. I cannot find any thing in the
> > documentation regarding these caps.
> >
> > Anybody know what they are for?
> > Are they required?
> >
> > Thanks for the help.
> >
> >
> > Steve Welsh
> > email:stevew@m...
> >
> >
> >
> >
>
>
>
>
>
well as for serial I/O. Check the section in the manual related to serin and
serout commands for an explanation. BTW, you need to use 16 as the serin and
serout port number to use this connector. I had to do some digging to find
the reference in the manual.
Gary
G. Shearer
Free Electron Laser Research Center
Vanderbilt University
Nashville, Tennessee
Original Message
From: "Steve Welsh" <stevew@m...>
To: "Basic Stamp list (E-mail)" <basicstamps@egroups.com>
Sent: Monday, July 31, 2000 12:06 PM
Subject: [noparse][[/noparse]basicstamps]
> I was laying out a board to use a Basic Stamp II. I noticed on the
Parallax
> super carrier board the ATN line is conditioned with two .1 uf caps one to
> ground the other to pin 4 on the DB9. I cannot find any thing in the
> documentation regarding these caps.
>
> Anybody know what they are for?
> Are they required?
>
> Thanks for the help.
>
>
> Steve Welsh
> email:stevew@m...
>
>
>
>
>
yourself a few bucks by changing the .031 to one of their standard drill sizes.
Mike
At 09:39 AM 10/24/00 -0700, you wrote:
>"Jay Kay" <pcb4u@e...> writes:
>
> >Anyone have a name for a prototype house?
> >
> >My board is single sided, 3.6"X7.0", drill size (min) is .031
> >
>
>Assuming you have your "gerber" files and are just looking to get your
>boards made, my usual tout for quick turnaround, reasonable pricing, is
>Alberta Printed Circuits: www.apcircuits.com
>
>Steve
>
>
>
>
>
>
> Steve Roberts: sroberts@s...
>
_________________________________
Mike Walsh
walsh@i...
California Institute of Technology
Biology Electronics Shop
MS 216-76
Pasadena, CA 91125
626-395-6825 , FAX 626-584-1654
237 Beckman Behavioral Biology Bldg.
basicstamps-unsubscribe@yahoogroups.com
...or click on the link above.
Original Message
> would someone please tell me how to unsubscribe from basicstamps
However, you could set a scratchpad variable and branch into the program
according to its value.
Original Message
Can someone shed some light on this for me. I have a bs2e running about 5
programs in different slots. Is there a way to be in say slot2 or program
two, which ever is correct, and with a line of code tell it to go to say
program4 but start at a certain line of code, like in the middle of the
program, and not the first line?
>Can anyone recommend a good way to get some data from a stamp based
>machine to a pc by some type of wireless method, say up to 250 ft?
You might have a look at the qwikradio IC's ( www.qwikradio.com )
manufactured by Micrel. Easy to use, and affordable to boot.
Todd Peterson
E-Lab Digital Engineering, Inc.
"IC Line for BASIC Stamp™ Applications"
www.elabinc.com
(816) 257-9954 FAX: (816) 257-9945
GO TO WWW.RENTRON.COM
LOTS OF INFO
LUCK
VICTOR
Original Message
From: Ricky Konvicka
To: basicstamps@yahoogroups.com
Sent: Tuesday, May 22, 2001 11:03 AM
Subject: [noparse][[/noparse]basicstamps]
Can anyone recommend a good way to get some data from a stamp based machine to a pc by some type of wireless method, say up to 250 ft?
Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
trying to display the position of 4 switch's like
1 > 1 2 > 1 3 > 0 4 > 1
or similar to that just basic where 1 = on 0 = off
what sort of code do i use ? can someone give me a hint thanx
smorhun2@h... writes:
> Hey im quite new at the basic stamp and am trying to use a parrallel lcd and
> trying to display the position of 4 switch's like
>
> 1 > 1 2 > 1 3 > 0 4 > 1
>
> or similar to that just basic
The Parallax web site (www.parallaxinc.com) has several documents that will
get you started on LCD interfacing -- it's pretty easy, really.
GOTO this link:
http://www.parallaxinc.com/html_files/resources/stampworks_experiments.htm
and download experiments 11 - 14. Those experiments will get you going.
-- Jon Williams
-- Dallas, TX
-- Applications Engineer, Parallax
[noparse][[/noparse]Non-text portions of this message have been removed]
your logic a bit to deal with the concise nature of PBASIC statements. You
might try this:
IF NOT(condition) THEN Next_Step
GOSUB Your_Routine
Next_Step:
-- Jon Williams
-- Applications Engineer, Parallax
In a message dated 10/8/01 4:51:09 AM Central Daylight Time,
Michel.De.Meester@u... writes:
> Hello
>
> Is there a possibility to jump to a subroutine after an IF Then statement,
>
> Something like:
>
> If variable = 1 then gosub label
>
> label:
> ...........
> .........
> return
>
>
>
> I tried jumping to the sub:
>
> if variable = 1 then label
>
> But then the stamp doesn't know where to jump back (there was no gosub
>
[noparse][[/noparse]Non-text portions of this message have been removed]
john.charlton@s... writes:
> I am building a test box for testing sensors prior to being shipped using
> the stamp as the brains of the box and a Visual Basic gui to take care of
> the user interface and data testing. The stamp uses and ADC to get most of
> the test data and stores it as a variable for each channel of the ADC.
> However, when i send out the information from the stamp to the PC i want
> each value to be three digits long. I need to know how to take a variable
> with the value of say 27 and add a zero to the front to make 027. Thanks
>
It's easy ... use the DEC3 modifier in your SEROUT statement.
[noparse][[/noparse]Non-text portions of this message have been removed]
ricky@m... writes:
> Can anyone recommend a good I2C bus compatible timekeeping chip comparable
>
Try the Philips PCF8583.
[noparse][[/noparse]Non-text portions of this message have been removed]
5 10-bit A/D channels plus floating point math and some general-purpose
digital I/O.
http://www.al-williams.com/awce/pak9.htm
Regards,
Al Williams
AWC
* Easy RS-232 Prototyping
http://www.al-williams.com/awce/rs1.htm
>
Original Message
> From: Ricky Konvicka [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=pA5JUc7rIFTe2oJTUDxybJy5be7FzciIKihX3Z7O4fDfz_SQy_Zeru1UxDNCD8dwH8m8tOZiW4f0cFLd1VwEqVlZD9s]ricky@m...[/url
> Sent: Wednesday, October 24, 2001 6:28 PM
> To: basicstamps@yahoogroups.com
> Subject: [noparse][[/noparse]basicstamps]
>
>
> Can anyone recommend a good I2C bus compatible timekeeping chip
> comparable to the ds1302?
> What about 10 bit serial a/d converters with I2C?
>
>
> Ricky Konvicka
> Electronic Engineer
> BioTech International Inc.
> www.biotechintl.com
>
>
> [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.
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
Correct me if I am wrong, but I can use a 32ohm speaker directly with a BS2
right? I mean no resistors needed. I hvae access, however to some 30ohm tiny
cell phone speakers. Can I use those as well? Do I need to bother with
adding a resistor? Sorry for the basic questions, but learning electronics
as I go.
Thanks
Richard
rryerson@o... writes:
> Correct me if I am wrong, but I can use a 32ohm speaker directly with a BS2
> right? I mean no resistors needed. I hvae access, however to some 30ohm tiny
> cell phone speakers. Can I use those as well? Do I need to bother with
> adding a resistor? Sorry for the basic questions, but learning electronics
>
Just to be safe it's a good idea to couple the speaker with a series
capacitor.
-- Jon Williams
[noparse][[/noparse]Non-text portions of this message have been removed]
Practical Robotics, by Bill Davies, ISBN 0-9681830-0-X, published by WERD
Technology Inc.
The Microcontroller Application Cookbook, by Matt Gilliland, see Parallax
web site
HTH,
Daniel
>
Original Message
> From: Ricky Konvicka [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=USZaDDlyHH4a3W0VsllTuaVR_LotC1qckeoMdjnJcxUNeORfynBaStTwKLv8NJPoLEbNb3xrZEALLXhTAc-cMiQ]ricky@m...[/url
> Sent: Monday, 11 February 2002 19:27
> To: basicstamps@yahoogroups.com
> Subject: [noparse][[/noparse]basicstamps]
>
>
> Anyone know of some good books on Sensors, Instrumentation
> amplifiers, and A/D converters? I am trying to hook several
> types of probes to a stamp through an 8 channel A/D. I just
> can't seem to tie the three together.
>
>
> [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.
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
_________________________________________________________
Do You Yahoo!?
Get your free @yahoo.com address at http://mail.yahoo.com
>I want to use the BS2 to simulate the outputs of the Quantum QT144
>level sensor, so I can design the other parts of the system without
>using the QT114 . What are the voltages on the outputs when set to
>High and Low, ther are probably not exactly +5V and 0V
>Michel De Meester
If the outputs are not loaded, yes, they will be very close to Vss
and Vdd power supplies. Both "out1" and "out2" are CMOS outputs.
Pin 5 on the QT114 selects the desired polarity. One thing you have
to watch out for is the "heartbeat" signal. Both outputs go tristate
(open circuit) briefly at the start of each measurement cycle when
fluid is not detected. Read the data sheet carefully! It is a great
chip!
-- Tracy
employment with Parallax) that used a BS2 to time four possible inputs for an
alarm system. I managed to get 100 ms resolution on the timing for each
channel, but it was an arduous task as I had to time and pad each path
through the code so that each ran the same amount of time.
I'd suggest the PCF8583 I2C chip. It will give you the timing you need and
you'll have an I2C bus to hang other devices from.
-- Jon Williams
-- Applications Engineer, Parallax
In a message dated 4/26/02 7:14:38 AM Central Daylight Time,
Michel.De.Meester@u... writes:
> Hello Stampers,
>
> While designig stamp applications and writing code for them, I often miss
> the existence of a 'timer'" function, available in most microcontroller or
> PLC systems.
>
> What do I mean, you can start a timer of any lenght at any time, programcode
> continues to run and you can do comparisons against the "timer variable".
>
> how do "pbasic" goeroes deal with this problem
>
> thanks in advance
>
> Michel
>
[noparse][[/noparse]Non-text portions of this message have been removed]