Subject:
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Re: Cybermaster Motor dead? Happend to anyone else?
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Newsgroups:
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lugnet.robotics
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Date:
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Thu, 31 Dec 1998 16:55:52 GMT
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Viewed:
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1099 times
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Laurentino Martins schrieb in Nachricht
<4.1.19981231133737.00a35900@195.61.90.220>...
At 11:01 31-12-1998 Thursday , you wrote:
> Last night I was programming my Cybermaster, the programm was running fine,
> except that the Brick stopped very hard and switched off after running
> forward about 1,5m . The voltage went down to 6.000 mV for 7.500 mV
>
> Since then there is only a scrambling sound when I start the motors with
> assembled chains, wheels or anything else that needs power. If there is
> nothing attached, the motor will turn around. New batteries don´t help.
>
> If I look to the current on motor three, the maximum is about 45mAmps, when
> the whole thing was ok, the maximum was about 110 MAmps.
>
> All three motors are victim´s of this strange behaviour.
>
> I think the motor driver circuit is broken.
>
> Does anybody else had this problem? Or is there a wrong parameter somewhere
> ? (just used fwd,rwd,on and off)
I know you said that fresh batteries didn't fixed it, but the only time it
happened to me it happened *exactly* the way you said and the fix was to
purchase new batteries.
Sorry, but I have no other ideas whatsoever.
Laurentino Martins *<||:-)
[mailto:lau@mail.telepac.pt]
[http://www.terravista.pt/Enseada/2808/]
--
Did you check the web site first?: http://www.crynwr.com/lego-robotics
I just changed the batterie pack, same reaction. I then took a datasheet of
batt´s, there was one difference between old and new batt´s: the older have
a capacity about 2700mAh, the newer only about 1100mAh, may be the newer
cannot deliver enough current.... Does anyone know how much Ampere´s are
needed to run Cybermaster?
Joerg
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Message is in Reply To:
 | | Re: Cybermaster Motor dead? Happend to anyone else?
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| (...) I know you said that fresh batteries didn't fixed it, but the only time it happened to me it happened *exactly* the way you said and the fix was to purchase new batteries. Sorry, but I have no other ideas whatsoever. Laurentino Martins *<||:-) (...) (25 years ago, 31-Dec-98, to lugnet.robotics)
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