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Unread 20-05-2011, 03:01
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dtengineering dtengineering is offline
Teaching Teachers to Teach Tech
AKA: Jason Brett
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Re: PWM speed controllers cheaper than Victors?

Quote:
Originally Posted by ProjectZero View Post
...even when stalled, the motors don't seem to pull more than 0.5 amps, and the typical no/minimal load current is 40 mA. ...
Why not just use an L293D motor driver chip? $3.50. http://search.digikey.com/scripts/Dk...=296-9518-5-ND

Or save a buck and use the roughly equivalent SN754410 http://search.digikey.com/scripts/Dk...=296-9911-5-ND

If you need more power, check out the L298D.

I've been using these for years on mini-sumo robots based on the Tamiya Dual Motor Gearbox and Twin Motor Gearboxes.

Jason