as newbie as can be
Archiver
Posts: 46,084
"fast-paced crash course using SERIN and SEROUT
with macromedia director"
Isnt that a graphics/ media program?
Ive been wrong before,
Dave
--- Original Message
From: <djkaput@y...>
To: <basicstamps@yahoogroups.com>
Sent: Tuesday, October 09, 2001 1:08 AM
Subject: [noparse][[/noparse]basicstamps] as newbie as can be
> Hello everybody...
>
> Just got my parallax BS2 stamp & carrier board in the mail and am
> about to embark on a fast-paced crash course using SERIN and SEROUT
> with macromedia director. Problem is, I don't know the first thing
> about this stuff. So I'm trying things out, with great trepidation
> about breaking my stamp by overloading it.
>
> I was trying today to set up an RC circuit with a photoresistor to
> test the functions of RCTIME. All I have are 220 Ohm resistors
> and .1 uf capacitors. I am scared of blowing up my stamp. Also I am
> having trouble putting the schematic into real-world. I just don't
> know what's right and what's wrong. Will I be connecting the
> capacitor to the VDD pin? Assuming I use alligator clips, will one
> end of the capacitor be in the same clip as one end of the 220 Ohm
> resistor? How strong should the second resistor be to keep it safe?
> And where in the chain should the photoresistor be?
>
> Sorry for all the questions...an answer to any one question would be
> as appreciated as all the answers. Any extra advice on finding non-
> pdf document help with this (maybe real photos of simple projects)
> would be good too. Thanks in advance!!!
>
> andrew
>
>
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>
>
with macromedia director"
Isnt that a graphics/ media program?
Ive been wrong before,
Dave
--- Original Message
From: <djkaput@y...>
To: <basicstamps@yahoogroups.com>
Sent: Tuesday, October 09, 2001 1:08 AM
Subject: [noparse][[/noparse]basicstamps] as newbie as can be
> Hello everybody...
>
> Just got my parallax BS2 stamp & carrier board in the mail and am
> about to embark on a fast-paced crash course using SERIN and SEROUT
> with macromedia director. Problem is, I don't know the first thing
> about this stuff. So I'm trying things out, with great trepidation
> about breaking my stamp by overloading it.
>
> I was trying today to set up an RC circuit with a photoresistor to
> test the functions of RCTIME. All I have are 220 Ohm resistors
> and .1 uf capacitors. I am scared of blowing up my stamp. Also I am
> having trouble putting the schematic into real-world. I just don't
> know what's right and what's wrong. Will I be connecting the
> capacitor to the VDD pin? Assuming I use alligator clips, will one
> end of the capacitor be in the same clip as one end of the 220 Ohm
> resistor? How strong should the second resistor be to keep it safe?
> And where in the chain should the photoresistor be?
>
> Sorry for all the questions...an answer to any one question would be
> as appreciated as all the answers. Any extra advice on finding non-
> pdf document help with this (maybe real photos of simple projects)
> would be good too. Thanks in advance!!!
>
> andrew
>
>
> 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/
>
>
>
Comments
I too am new to the BS arena. They always include pictures of how things
are hooked up.
http://www.parallaxinc.com/html_files/downloads/downloads_sic.htm
By the way, Parallax has been great for puting out the documentation for
their Stamps in Class curriculum.
You might also look at (Stamp Applications no. 15 May '96): "Understanding
the RCtime Instruction and Creating Strings in EEPROM". Its by Scott
Edwards and it can be found on the web. Another RCtime page is:
http://www.emesystems.com/BS2rct.htm
I am a programmer, and I don't know much about electronics. When I first
got my BS2, I was also scared of blowing it up. Its been about a year, and
I'm starting to feel more comfortable about making mistakes. I have not
messed up my stamp yet. I think that it is good to be cautious, but there
have been some times that my over cautiousness has prevented me from playing
around with the circuit. I guess my biggest hangup is knowing just how much
current is too much. They can say 20/25 for the source/sink; but I have yet
to associate that much current with anything.
The college I attended has a motto that says: "By Doing Learn". I hope you
enjoy your stamp.
Bryan Smith
>
Original Message
> From: djkaput@y... [noparse]/noparse]SMTP:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=V6EYRjjTDv2XPNjIOksexqnJPHEZF-EOQtMxMVVPVrsPGMvYjGV-3k1eEtszeYfK55055hBwHlDi]djkaput@y...[/url
> Sent: Tuesday, October 09, 2001 1:09 AM
> To: basicstamps@yahoogroups.com
> Subject: [noparse][[/noparse]basicstamps] as newbie as can be
>
> Hello everybody...
>
> Just got my parallax BS2 stamp & carrier board in the mail and am
> about to embark on a fast-paced crash course using SERIN and SEROUT
> with macromedia director. Problem is, I don't know the first thing
> about this stuff. So I'm trying things out, with great trepidation
> about breaking my stamp by overloading it.
>
> I was trying today to set up an RC circuit with a photoresistor to
> test the functions of RCTIME. All I have are 220 Ohm resistors
> and .1 uf capacitors. I am scared of blowing up my stamp. Also I am
> having trouble putting the schematic into real-world. I just don't
> know what's right and what's wrong. Will I be connecting the
> capacitor to the VDD pin? Assuming I use alligator clips, will one
> end of the capacitor be in the same clip as one end of the 220 Ohm
> resistor? How strong should the second resistor be to keep it safe?
> And where in the chain should the photoresistor be?
>
> Sorry for all the questions...an answer to any one question would be
> as appreciated as all the answers. Any extra advice on finding non-
> pdf document help with this (maybe real photos of simple projects)
> would be good too. Thanks in advance!!!
>
> andrew
>
>
> 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/
>
your BS manual (I believe that the BS2 can source 20ma and sink 25ma)
and find the max power input ratings, then refer to ohm's law. I'm
not sure about the BS2 (I have a BS1), but I believe there should be
a diagram in your book showing how to connect the capacitor and
resistor. I would suggest buying some resistor and capacitor
assortments from Radio Shack. You can never have enough parts! That's
what I always say...
> They can say 20/25 for the source/sink; but I have yet to associate
> that much current with anything.
Note that is the maximum per pin, the chip is limited to 50mA total I think.
This means you could only run 2 pins with 25mA loads, 5 with 10mA etc.
You can always but 220 ohm resistors in series with each pin. This will limit
current even if connected to the +5 supply.
Anything over 15mA should probably be driven by a driver IC (ULN series)
or transistor/MOSFET if using more than 1or 2 i/o pins.