Subject:
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servo ports on Exp board...help?
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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 22:22:59 GMT
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Viewed:
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918 times
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Hi
the servo ports on my expboard seem to work fine, but when the servos
are'nt active ( init_expbd_servos(0); ) and a motor is turned on the ports go
crazy , servos will turn eratically, with hacked servos they just move in one
direction. Would a filter cap help and if so were would one put it , in the
motor ports or servo supply?
Thanx -Alex
PS- now that I think about it could seperating the servo supply to a diff. batt
work?.
Thanx again.
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Message has 2 Replies:
 | | Re: servo ports on Exp board...help?
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| Hi, We saw this exact problem last year. Our servos went so crazy that they actually destroyed their gears and had to be scrapped. The fix is simple, solder a capacitor across the motor leads. The motor causes noise on the lines which the servo (...) (25 years ago, 21-Mar-00, to lugnet.robotics.handyboard)
| | | Re: servo ports on Exp board...help?
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| Hi again, I should have mentioned this in the first message. In our case, the motor that was causing the problems was a fan motor (to blow out a candle) and it was completely electrically isolated from all of the other circuitry. It had its' own (...) (25 years ago, 21-Mar-00, to lugnet.robotics.handyboard)
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