Quote:
Originally Posted by Brayton
... Also with the drill trigger, is that simply a variable resistor (potentiometer) and could I implement something like that on the board? Would I need some crazy expensive potentiometer that can handle high amperage?
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The problem with using a large variable resistance resistor is that a resistor's voltage drop is proportional to the current flowing through it (V=iR). So as your motor's current draw changes (when it's starting up or when you put a load on it) the voltage applied will also change. A motor controller or drill tigger does not have this problem.