Subject:
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Re: Weird LCD problems
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Thu, 22 Feb 1996 00:19:45 GMT
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Original-From:
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Fred G. Martin <(fredm@media.)saynotospam(mit.edu)>
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Viewed:
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2090 times
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David --
Soldering d0 to +5v certainly can't help; it should be connected to
the data bus (pin 9 of the 6811, pin 11 of the RAM, and pin 3 of the
'hc373). (see the cpu and mem schematic).
With board power off, check continuity among these connections and
going to the d0 pin of the LCD. If the board runs IC at all, it would
tend to suggest that d0 simply isn't making it to the LCD.
-Fred
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Message is in Reply To:
 | | Weird LCD problems
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| (Summary - LCD not reading D0 value) Well the parts finally arrived in the mail for me to start working on my HB. I have been assembling it step by step to ensure that debugging would be as simple as possible. I am at the stage where I hook up the (...) (29 years ago, 22-Feb-96, to lugnet.robotics.handyboard)
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