I am trying to control 4 DC motors from my particle photon PWM pins and would like some hardware suggestions as I am no electronics expert.
Currently I have 4x8520 motors with a 160ma max current when unloaded. But cannot figure out which diode (to go across the motor pins), resistor (between PWM pin and transistor base) and transistor I should use.
My current best guess is a 1k resistor, TIP35C transistor and a 1N4001 diode. I will be using a 3.7V LiPoly 600mAh battery.
Are these acceptable to drive these motors?