Subject:
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Re: No heartbeat when switch on
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Tue, 13 Jul 1999 11:44:14 GMT
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Original-From:
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Fred G. Martin <fredm@media.mitSPAMLESS.edu>
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Viewed:
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973 times
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did you try reloading the operating program, pcode_hb.s19? use hbdl
on windows or 6811 downloader mcl on macintosh.
this program (pcode_hb.s19) must be resident on the HB at all times.
it sounds like for whatever reason it got corrupted. this isn't
anything to worry about, just reload.
fred
In your message you said:
> Hello
>
> I had used the HB for a few days already. Recently when I used the HB to
> drive 4 9V motors, the L293D chips got very hot. After that it LEDs
> start lighting up without the software turning on the motors. So I
> replace the L293D chips. Now when I turned on the HB, all the LEDs for
> the motors lighted up. Also there is no pulse from the heartbeat. The IC
> program also cannot communicate with the HB.
>
> Regards
> Lionel
>
>
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Message is in Reply To:
 | | No heartbeat when switch on
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| Hello I had used the HB for a few days already. Recently when I used the HB to drive 4 9V motors, the L293D chips got very hot. After that it LEDs start lighting up without the software turning on the motors. So I replace the L293D chips. Now when I (...) (25 years ago, 13-Jul-99, to lugnet.robotics.handyboard)
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