NXT Relay Interface Completed

The above photo shows Salvius's NXT mounted to the inside of the wooden drive base. The three wires coming out of the top of the NXT are connected to a custom made circuit board with three DPDT (Double Pole Double Throw) relays. The relays allow the NXT to control much larger motors than it was designed to operate. At this point, the relay board only allows the NXT to control the direction that the motor spins in (forward, backward, neutral) later modifications will be made so that it can also control the motors' speed.