Wiper control circuit
Home Original wipers Wiper circuit 2 Julian Rogers Home

The sketch above shows a block diagram of my system with the assignment of ports on the Arduino. I could have used the six-way switch in a potential divider circuit of five resistors between 5 volts and zero volts thus outputting a voltage to an analog port which depended on the position of the switch. I chose to use 6 digital ports but I don’t know why! (As I write this I notice I only needed 5 as when all 5 are showing 0, the switch must be in the unconnected position.)

The mosfet driver and current sensing circuits are on the next page

Input circuit details are shown left

Wiper control circuit