dennis_arduinouser:
The arduino is 3.3v and switches the motor driver on and off. I have a boost converter that can output up to 2A.
That boost converter will do just fine. Now which motor driver are you using? This IS important.
dennis_arduinouser:
But isn't inputing 11V into the arduino pro mini wastefull?
But you're not inputting 11V into the arduino. Just see you're own diagram in comment #4, you're inputting only 3.7-4.2V into the arduino.
dennis_arduinouser:
