Battery connected backwards to robot

[rich2202]

Originally Posted by Alan Anderson

I know it's prohibitively difficult to put reverse voltage protection on the PDP input. But what about adding an inexpensive (~$2) 70dB buzzer with a diode so that it screams when you apply power backwards? That might give the user a chance to open the breaker quickly enough to avoid frying everything.

Ideally, you put it on the Main Breaker, so it screams before you close the breaker and complete the power connection.