Controlling a bunch of vibration motors from a single arduino

Other Hardware Motors, Mechanics, Power and CNC
4

MarkT:
The current draw figures are probably steady-state - at turn on the motors might take more
than 100mA briefly. I'd add a 1N4148 across each motor as a free-wheel diode rather than
risk frying the TPIC6B595.

(these motors are designed for 3.7V phone LiPo batteries, so 5V is pushing them rather hard).

  1. The TPIC6*595 has active voltage clamps, so no diodes across the motors needed.
    Peak current of the B version is 500mA.

  2. Use/make a lower supply for all the motors. e.g. a 3.3volt switching regulator.
    Leo..