Ardumoto motor driver shield can send 2amps current per channel.But what if we provide a battery with larger amp .Will it send/bear the excess current ? Or it will resist excess current??
The shield will only supply the current demanded by the motor. A battery with more current capability will not affect that. Think about this, you could command the motor to stop and then the shiled will be supplying no current to the motor. Any battery will have the ability to supply more than 0 amps and yet it all still works.
Mee_n_Mac:
The shield will only supply the current demanded by the motor. A battery with more current capability will not affect that. Think about this, you could command the motor to stop and then the shiled will be supplying no current to the motor. Any battery will have the ability to supply more than 0 amps and yet it all still works.
The whole “batteries” push misconception seems to be pretty deeply rooted out there. Loads pull, batteries simply give what they are asked for (up to what they are capable of). The motor is the load in this case. You could have a 1000 Amp capable battery and it still wouldn’t deliver more current to a 2 Amp load. Ohm’s law baby!
and, don’t try a higher load with that shield as it can only handle a 2 amp load (according to the specs - be a little suspicious of specs in general). A higher load will probably cause the controller to let all it’s magic smoke out.
and finally, that ain’t overclocking.