two STAMPs connection
What's the safest way to connect one output pin of a STAMP to one
input pin of another STAMP? Do I need a resistor between two pins?
Thanks
Charles
input pin of another STAMP? Do I need a resistor between two pins?
Thanks
Charles
Comments
>What's the safest way to connect one output pin of a STAMP to one
>input pin of another STAMP? Do I need a resistor between two pins?
>Thanks
>
>
>Charles
Charles -
If you are attempting to network two Stamps together, please check pages 327,
328 in the PBASIC Stamp Manual. The manual is available free from the Parallax
web site:
[noparse][[/noparse] http://www.parallaxinc.com ]
in the documentations section. There's more to it than might meet the eye.
Regards,
Bruce Bates
>
> If you are attempting to network two Stamps together, please check
pages 327, 328 in the PBASIC Stamp Manual. The manual is available
free from the Parallax web site:
>
> [noparse][[/noparse] http://www.parallaxinc.com ]
>
> in the documentations section. There's more to it than might meet
the eye.
>
> Regards,
>
> Bruce Bates
Actually, my intention is to send status input of a stamp to the
other stamp. Like external interrupt. I wonder I can directly
connect two inputs together. Thanks for the posting.
Charles
1k to 2k resistor because of the cost of the Stamp chip. If you have a
software mistake where both pins are acting as outputs and "fight" each
other, the resistor limits current to non-destructive levels.
Ray McArthur
Original Message
From: <ckim@h...>
To: <basicstamps@egroups.com>
Sent: Wednesday, November 15, 2000 4:04 PM
Subject: [noparse][[/noparse]basicstamps] two STAMPs connection
> What's the safest way to connect one output pin of a STAMP to one
> input pin of another STAMP? Do I need a resistor between two pins?
> Thanks
>
>
> Charles
>> Charles -
>>
>> If you are attempting to network two Stamps together, please check
>pages 327, 328 in the PBASIC Stamp Manual. The manual is available
>free from the Parallax web site:
>>
>> [noparse][[/noparse] http://www.parallaxinc.com ]
>>
>> in the documentations section. There's more to it than might meet
>the eye.
>>
>> Regards,
>>
>> Bruce Bates
>
>Actually, my intention is to send status input of a stamp to the
>other stamp. Like external interrupt. I wonder I can directly
>connect two inputs together. Thanks for the posting.
>
>Charles
Hi Charles -
Regardless of what you might be tempted to emulate, external interrupts just
aren't available on a Stamp - somewhat sad to say. In large part polling is used
as a replacement, but I presume you can see through that method, as merely a
"circumvention" (of a sort).
There are other u-processor platforms which permit external (and other)
interrupts, but most have opted to migrate to PICs if interrupts were an
imperative. BOTH have their place IMHO. Other information is available if you
would care to contact me off list.
Depending on your exact needs, I may have some hints for you.
Regards,
Bruce Bates