to my knowledge, the arduino motor shield only supports loads up to 18 volts.
I was hoping that there might be a cheaper solution than that. 30$ is a little steep. I was thinking that maybe a couple of transistors could do something like this, but I don't quite know which ones I'm looking for, or how to set them up for that matter.
Did you look up H-bridge?
Quote from: Henry_Best on Jun 18, 2013, 04:14 pmDid you look up H-bridge?I know that H-bridges work to reverse the direction of the flow, but they don't do anything for speed as far as I can see.
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