Subject:
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Re: Weak Motor
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Sun, 25 Jul 1999 15:02:23 GMT
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Original-From:
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Will Bain <WILLBAIN@CSnospam.UMT.EDU>
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Viewed:
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874 times
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Shao Xiong wrote:
> I have try to run the handy board using the standard DC 9V motor
> purchase from one of the vendors. However , it does not seem be able to
> move very well though i put it to 100% of its capacity. I am now working
> on a project to built a remote car which must be able to carry a load of
> 1.5kg. Does anyone has any motor model to recommend?
>
> Secondly, can i connect a 12V supply directly to terminal meant for
> the 9V battery directly. Since the HB can take in supply of 9 - 12 V.
I remember someone saying a few months ago that if you use a 12 V battery with the HB, then the HB's built-in charging circuit won't work properly, and that 12 V batteries can initially deliver up to about 14 V, which wouldn't be very kind to the electronics.
The simple (but possibly expensive) solution is to get a remote control car that's already been built and has its own battery, then add the HB to it. The steering servo found in most RC cars can be controlled directly by the HB, and the electronic speed controller could probably be disconnected from the radio receiver and controlled in a similar way. I bought an old, used RC-10 race car for use as a robot platform, and it's extremely rugged (aluminum chassis, adjustable shocks, differential, etc.)
Alternatively, you could use an external H-bridge circuit and separate battery to drive your motors. This is the cheap, safe solution. Good luck!
-- Will
, ,
__@_/ \_@__ |/
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)\ ) ( \ (\/\\,
~~~~~~~~~ ' ` ~~~~~~~~~~~ ` ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Wendy Parson, Conscience: the inner voice which warns us
Will Bain, that someone may be looking.
& Tatoosh --H. L. Mencken
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Message is in Reply To:
 | | Weak Motor
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| I have try to run the handy board using the standard DC 9V motor purchase from one of the vendors. However , it does not seem be able to move very well though i put it to 100% of its capacity. I am now working on a project to built a remote car (...) (25 years ago, 24-Jul-99, to lugnet.robotics.handyboard)
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