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Author Topic: Controlling the speed of a dc motor?  (Read 857 times)
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Hofstadter's Law: It always takes longer than you expect, even when you take into account Hofstadter's Law.
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As JimboZA says, you meed to clarify whether you have a DC motor or a servo. If it's a motor, you shouldn't be driving it as if it's a servo. If it's a servo, you probably don't even need a transistor to drive it.
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.... you meed (sic) to clarify whether you have a DC motor or a servo.

And if it's a dc motor and you have code for a dc motor, you can't reasonably expect help when you post servo code. Anyone trying to help is really pissing in the dark if you don't provide enough info.

It seems that you have posted servo code for a dc motor and have given a link to a schematic that you believe you followed correctly, but with a few differences. Post the actual code and the actual schematic, maybe with photos or Fritzings, then you'll probably get some help....
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Have you looked for answers in the Learning, Reference, Products and Playground tabs on http://arduino.cc/en/ ?
Look here http://electronicsclub.info/ for basic electronics

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