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I believe that swaping out the PCB will make a diffrence. I made my measurements parllel to the motor and found that the resistance across the H-bridge on the ZZ was prety high. I was interested in knowing how much loss was in the transistors since those were the only parts I could replace.
Measuring in series to the motor will let you know how much power you are using. Volts*Amps=Watts I think. So using another motor will increase your current draw in the same way using another PCB would.
Also, I would like to suggest that the motor should not be allowed to turn when measuring in series to give the best idea of how much power the car has.
Oh, and there is definatly no pulse width modulation. I do hope somebody tries to send a PWM signal from the transmitter. Has anyone heard of someone succedding or failing at trying this?
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