Subject:
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Re: serial interface
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Mon, 22 Jul 1996 20:13:16 GMT
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Original-From:
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Garth W. Webb <webbgw@cig.mot+nomorespam+.com>
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Viewed:
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1584 times
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On Jul 22, 2:45pm, Nabeel Tarabishy wrote:
> I was able to get the serial connection to stabilize ( the least movement
> will throw it off),
It sounds like you have a bad solder joint. I would take a multimeter
set on the conductivity mode and test pins 2 and 3 of the female serial
connector on the interface/charger board. Pin 2 of the serial connector
connects to pin 8 of the MAX232 chip and pin 3 of the serial connector connects
to pin 7 of the MAX232. You might also want to inspect the solder side of the
board for any obvious faulty solder connectons:
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/|\ <-- solder in a cone (|) <-- solder in a ball
--------- --------
Good Bad
> however, when connected to the board, the green LED will
> come on, and it will not download. If I remove the cable, I can get it into
> the download mode, but with the cable, it will not go into that mode nor it
> will receive.
What do you mean by download mode? Do you mean bootstrap mode? Do you
have the memory chip installed yet? You wont be fully able to download
something until the mem is there.
--
_______________________________________
< Garth Webb >
> Motorola CIG <
< 1475 W. Shure Drive >
> Arlington Heights, IL 60004 <
< webbgw@cig.mot.com >
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