I haven't tried using nano as the primary source for the micro motors as I'm still planning for project. If possible please suggest me any motor driver with less weight or if using any MOSFET would be more efficient ( voltage 3.7-3.3 V)
closed as unclear what you're asking by Andy aka, Elliot Alderson, Chris Stratton, RoyC, Warren Hill Aug 14 at 14:11
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The Atmega328p datasheet states that you can draw a maximum of 40mA per I/O pin, with a maximum of 200mA for the full device (you can drive around 4 I/O pins at max current, since the processor itself will still draw some additional current). If you need more current than that, you'll need to use a MOSFET (for single direction on/off) or an H-bridge (for two direction on/off), or an ESC module (for brushless motors).