1
$\begingroup$

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

Improve this question
$\endgroup$
1
  • $\begingroup$ How did you measure the current? Were you seeing those values as peaks? Can you please post some waveforms? $\endgroup$
    – SteveO
    Commented May 31, 2018 at 4:10

1 Answer 1

Reset to default
1
$\begingroup$

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?

Improve this answer
$\endgroup$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.