I'm controlling a micro dc motor with this motor driver. In order to power off the motors when they're not in use (while other parts of the project are running) I'm using a transistor and connecting the motor terminals across the diode. It successfully turns off the 12V power supply when LOW, but somehow the motor still turns on a lower speed.
I've tried the transistor set up with the motor and battery directly and all is fine. However, with the addition of the driver I run into this problem. I suspect it's somehow drawing power from the 5V supply at the VDD terminal of the driver. Any thoughts?