Subject:
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Re: handy board troubles...
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Tue, 21 Mar 2000 16:07:24 GMT
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Viewed:
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1286 times
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In lugnet.robotics.handyboard, John Wynne writes:
> Actually Jake, I'm having a similar problem right now, with regard to
> loss of RAM capabilities.
>
> I've been testing a new Polaroid 6500 sonar (which now works!) on the HB
> and I've got it hooked up through the exp. board. I tried to run a simple
> program that used actuated two servos, two motors, while polling one analog
> input. It seemed to work without the Polaroid connected, but when I fired
> it up with everything loaded on, it died, and now my HB can't seem to hold
> it's RAM with the RJ11 cord connected to the charger/dler. I'm not completely
^^^^
Do you mean without? That's my problem; the board only holds its data if
the cord is plugged in.
> sure how the servos are powered/oscillated (etc.) so I haven't been able
> to locate where I might have suffered some kind of power surge (possibly
> from the sonar ranging board)... does it make any sense to think that
> the sonar could have any affect on other periferals without being directly
> powered up?... How ARE the servos on the Exp. Board driven?
I've also got a servo which I can't figure out how to drive from the
exp. board, but the problem of the RAM discharging happens even with a
bare board (no exp., no lcd).
I'm convinced its a voltage problem and was going to try replacing the fuse
at F1 next.
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Message has 1 Reply:
 | | Re: handy board troubles...
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| (...) Yes! I apologize, I meant "..._without_ the RJ11 cord connected..." Is it possible a surge could have fried the RAM and now it won't hold memory? That was my contention, but I'm not sure... John p.s. RAM replacement question: Will any 64K CMOS (...) (25 years ago, 21-Mar-00, to lugnet.robotics.handyboard)
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Message is in Reply To:
| | Re: handy board troubles...
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| Actually Jake, I'm having a similar problem right now, with regard to loss of RAM capabilities. I've been testing a new Polaroid 6500 sonar (which now works!) on the HB and I've got it hooked up through the exp. board. I tried to run a simple (...) (25 years ago, 21-Mar-00, to lugnet.robotics.handyboard)
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