Subject:
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motors
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Sat, 19 Apr 1997 22:19:53 GMT
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Original-From:
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MAR ERICSON <{mar@cooper}NoMoreSpam{.edu}>
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Viewed:
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1816 times
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Hi,
I have some motor trouble. I have two motors. I have a polaroid sonar.
When I run one of the motors, the sonar works. When I run the other motor,
the sonar's detected distance jumps arround randomly. The randomness seems
to be more at higher speeds. I tried using different motor ports but the
result is the same. One motor causes this erratic behavior, and the other
doesn't.
It's funny, cause the sonar and the motors and the HB are powered
seperately.
Has anyone experienced something like this?
Thanks for any input. :)
-----------
ericson mar
Master of Engineering Candidate
Project: Mobile Robotics
mar@cooper.edu
(212)353-4356
Department of Mechanical Engineering
The Cooper Union for the Advancement of Science and Art
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Message has 2 Replies:
 | | Re: motors
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| I haven't had the same poblems, but I have a theory as to your problem. There are two probabilities: 1) The motor is causing too much noise and is interfering with the sonar, or 2)The motor is giving off electrical noise (i.e. electromagnetic waves) (...) (28 years ago, 19-Apr-97, to lugnet.robotics.handyboard)
| | | Re: motors
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| Mar, You might want to try attaching a small (0.1uF) capacitor to the motor leads as close as possible to the motor. Use a ceramic or monolithic ceramic capacitor. That might reduce the motor noise your sonar board sees. Also remember that even (...) (28 years ago, 21-Apr-97, to lugnet.robotics.handyboard)
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