This breakout board will connect the parallel port of your computer to the drivers that drive the motors. A relay is featured on this board so another device can be controlled on and off, such as the router/spindle. There are 11 output pins that can control various devices such as stepping motor drivers, coolant, spindle, mist, air, etc. 10 of these pins can be dedicated to motor axes for a total of 5 axes. 4 Input pins are provided for limit or home switches. Make sure to connect a USB cable to the board so that the board can be powered. The USB will provide power to the board, the gate/buffer ICs and the relay. If the USB cable is not connected, there will be unexpected results as the parallel port does have power on the pins, but not enough to power the board.
