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I purchased one of these motor drivers and noticed that i was not getting as much time from my battery as i had expected. I tested the current draw when connecting my motor directly to the battery and then when connected via the controller. the results were disappointing, i got 70mA direct connection and 144mA using the controller so more than double the current! i then tried through a mosfet and that was good, 73mA. If i want to get a more efficient circuit am i going to have to build an h-bridge myself or am i just using a rubbish controller? Thanks

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  • $\begingroup$ How did you measure the current? Were you seeing those values as peaks? Can you please post some waveforms? $\endgroup$ – SteveO May 31 '18 at 4:10
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You connected your (one) motor to the battery and got 70mA draw. You use a two motor driver and are seeing 144mA draw. I'm not sure what the problem is. What command are you sending to the second motor?

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