How to make ARDUINO aware of using a MOTOR by other item/pcb ???
I would like to know, how can I get the information to ARDUINO ... that other item/pcb has turn on a motor ???
The PCB that the cables are coming from to the motor is power by one AAA battery. When you turn on the pcb, it sends short bursts to the motor, so it vibrates every second (for half a second).
Now I would like to know, how to connect the arduino to the motor, so that the arduino would know when the motor is on ???