Subject:
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Motors & handyboard
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Fri, 14 Feb 1997 17:29:58 GMT
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Original-From:
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Oriol de los Santos Vidal <osantos@ee#NoSpam#.utah.edu>
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Viewed:
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3058 times
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Yesterday I tried to run a motor out of the HB. First I tried how much current
it needed with a multimeter and a 5V power source ... The result 75mA.
When I tried to run the motor from the HB, after turning on the motor at low
speed (motor (0,20);) to make sure I wasn't sending to much current through the
motor drivers, the motor ran for a second and then the HB power led lighted
and the board was reset.
Is that a sign that the power the motor needs is much higher than the HB can
supply. In this case I would expect the motor drivers to burn, but not to cause
the HB to reset.
HELP ??
thanks
Oriol
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Message has 3 Replies:
 | | Re: Motors & handyboard
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| (...) how did you take this measurement exactly? I think 75 mA might be kind of low, most motors will draw this much when they are just spinning but doing no useful work, but then draw much more when they are driving a geartrain. (...) actually, (...) (29 years ago, 14-Feb-97, to lugnet.robotics.handyboard)
| | | Re: Motors & handyboard
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| (...) Unfortunately this is the LEAST amount of current the motor will draw when operating. You have measured the 'unloaded current'. Now, while you have your motor running, grab the shaft between your fingers and stop it, and measure that current. (...) (29 years ago, 14-Feb-97, to lugnet.robotics.handyboard)
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