BS2 pins connected to other BS2 pins
Hi,
I would like to know if it is safe to connect the IO pins of one
stamp to the IO pins of another stamp. Can one stamp sink everything
another can source. Or do I need a resistor in between them
I need to do some very mild comunication between two BS2's.
my email is stuff@m...
Happy Holidays to all,
Rod
I would like to know if it is safe to connect the IO pins of one
stamp to the IO pins of another stamp. Can one stamp sink everything
another can source. Or do I need a resistor in between them
I need to do some very mild comunication between two BS2's.
my email is stuff@m...
Happy Holidays to all,
Rod
Comments
a time. However, it would be prudent to put a small resistor between
each pin in case you accidentally made both outputs of different values
at one time. A 1K resistor would be OK and would cause 5mA to flow in an
error state -- not much at all. The only downside is that if you use
long wires the increased R and C could stretch signals. For moderately
short runs you won't have any problem at all.
Al Williams
AWC
* Floating point A/D
http://www.al-williams.com/awce/pak9.htm
>
Original Message
> From: bru2seismo [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=7AHSrNSqE42xLcJGl6zVYKny6T7bcXFL-iocA3gNnKRbct6Rz3jdnDqDcOIqX1eg0Dfv-EXF59KR3cQM2QMcrQ]stuff@m...[/url
> Sent: Friday, December 28, 2001 3:26 PM
> To: basicstamps@yahoogroups.com
> Subject: [noparse][[/noparse]basicstamps] BS2 pins connected to other BS2 pins
>
>
> Hi,
>
> I would like to know if it is safe to connect the IO pins of one
> stamp to the IO pins of another stamp. Can one stamp sink everything
> another can source. Or do I need a resistor in between them
>
> I need to do some very mild comunication between two BS2's.
>
> my email is stuff@m...
>
> Happy Holidays to all,
>
> Rod
>
>
> 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/
>
another this is in case they both wind up as outputs in opposite states.
Anything from 470 ohm to 10K is common, and even 100K will work in most
cases.
Original Message
From: "bru2seismo"
> Hi,
>
> I would like to know if it is safe to connect the IO pins of one
> stamp to the IO pins of another stamp. Can one stamp sink everything
> another can source. Or do I need a resistor in between them
>
> I need to do some very mild comunication between two BS2's.
>
> my email is stuff@m...
>
> Happy Holidays to all,
>
> Rod
and applications this past summer, I often referred to resistors as "cheap
insurance." Even though I have a lot of experience with Stamps (7 years) and
don't have to pay for them ... whenever I connect two Stamp pins together I
put a resistor in between (usually 1 kOhm). It's better to be safe than
sorry.
Watch for the January 2002 issue of Nuts & Volts magazine. My column ("Stamp
Applications") discusses connecting Stamp pins and synchronized
communications between two Stamps.
Happy New Year.
-- Jon Williams
-- Parallax
In a message dated 12/28/01 3:27:27 PM Central Standard Time,
stuff@m... writes:
> I would like to know if it is safe to connect the IO pins of one
> stamp to the IO pins of another stamp. Can one stamp sink everything
> another can source. Or do I need a resistor in between them
>
> I need to do some very mild comunication between two BS2's.
>
[noparse][[/noparse]Non-text portions of this message have been removed]