Subject:
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Re: BrickOS motor port horrors
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Newsgroups:
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lugnet.robotics.rcx.legos
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Date:
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Sun, 26 Oct 2003 02:53:42 GMT
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Viewed:
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7348 times
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Well, I don't know much about it being possessed, but you should try to divide
the problem probabilities in half.
Try loading the original lego firmware.
(Yes I know, this brings horror to some of you fellow programmers out there, but
its just temporary :-)
See if that fixes the problem. If it does, you've most likely got a software
problem. If not..... you've got a hardware problem....
This will not work in all situations, but its a good starting place.
I hope this helps you some!
Timothy
P.S. If there is no hope, pray for guidance and wisdom from someone who knows
the answers.
In lugnet.robotics.rcx.legos, Rob Stehlik wrote:
> I was writing some simple programs to test out BrickOS last night, and had some
> really strange behavior. I hooked up a motor to port B and a rotation sensor to
> port 2. My programs were just testing out various motor speeds and positioning
> accuracy. The problem was, the motor made some awful grinding noises. It was
> almost as if it was toggling between forward and reverse rapidly. I haven't
> experimented with low speeds in BrickOS before, so I thought maybe it was
> normal. But once I stopped the program, the motor kept going. Kind of freaky.
> Then I shut of the RCX, turned it on again, and the motor started grinding
> again. Really freaky. The I hooked up the motor to the other ports to see if
> anything was wrong with them. Port A seemed fine, while port C was powered as
> well. Instead of a low grinding noise, it produced a high pitched whine. But the
> motor still ran even after the RCX was turned off and then on again. So... I
> erased the firmware by removing the batteries, and then reloaded BrickOS
> 0.2.6.10. Without even downloading a program to the RCX, motor ports B and C
> behaved the same as before. To make sure the problem was not a hrdware issue, I
> erased the firmware again, and loaded the standard Lego frimware, and the motor
> ports behaved themselves.
>
> Any idea what might have gone wrong? Is my RCX possessed?
> Rob
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Message is in Reply To:
 | | BrickOS motor port horrors
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| I was writing some simple programs to test out BrickOS last night, and had some really strange behavior. I hooked up a motor to port B and a rotation sensor to port 2. My programs were just testing out various motor speeds and positioning accuracy. (...) (23 years ago, 25-Oct-03, to lugnet.robotics.rcx.legos)
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