hi i bought a mc 33926 motor controller a few weeks ago and have a question about powering the motor controller and arduino from the same power source. I am powering the motor control with 20 volts with 2 lipo batterys( one 7.4 volt and one 11.1 volt) and need to know how to power the arduino off on the motor controller or the batterys safely. I know i could use the arduinos vin pin but the arduinos voltage regulator can only handle 20 volts so it is cutting it to close. Would it be possible to run a lead off of the 7 volt battery to the regular power input on the arduino. I am not sure if that is safe for the motor controller and the arduino. I would just add a extra battery pack for the arduino but i have a weight limit and am already cutting it close.
hope someone can help