A simple Circuit for sensing the current to a 12v motor (DC).
The pot can be adjusted to alter the voltage output on the opamp output for a needed reading. As the motor load increases the opamp output voltage rises. This is designed to hook the output to an arduino for monotoring the motor load and can therefor be used to shut off the motor if it is been over loaded. Or I suppose you could use it to adjust the motor speed. I designed this to be used as a safety for a gate motor but the uses are pretty much anything you can imagine.
