I am working on a project that requires actuating a piston and spinning a motor at the same time. I am using a Seeeduino board with a motor shild mounted on top. I want the piston to fire periodically. Within the Arduino IDE the pins all have some number but I don't know what number the M1A,M1B,M2A,M2B pins have. I am new to the micro-controller realm! Who can save me?