Subject:
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Re: Faulty Digitals
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Fri, 23 Apr 1999 01:18:20 GMT
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Original-From:
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Fred G. Martin <FREDM@antispamMEDIA.MIT.EDU>
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Viewed:
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3417 times
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it might be the processor, but more likely there is a board short
connecting the dig ins to ground (input 7) and pwr (input 8).
measure resistance between the inputs and the gnd and pwr rails to check.
fred
> Greetings all!
> I've got a Handy Board with the expansion board, and the first and
> second digital ins (digitals 7 and 8) aren't working. 7 is stuck in 0,
> and 8 is stuck in 1. I replaced everything on the board but the
> processor itself, and I'm not very good at electronics (I know just a
> tad more than the basics) but I do have access to a logic probe and an
> Oscilloscope, though I'm not completely sure how to use them correctly.
> If anyone can help me with this problem it would be greatly appreciated.
>
> Thank You.
>
> -Ryan
>
>
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