Using Lego NXT to Control Salvius Robot

The NXT intelligent brick is a programmable micro-controller sold by LEGO (http://mindstorms.lego.com). The NXT is designed to work with a variety of sensors and a select number motors, but its outputs can easily be modified to control larger motors, this makes the NXT a perfect choice for Salvius's navigational motors (the motors that turn the wheels that allow Salvius to move).


The board that plugs into the NXT has three (one for each motor) double-pole/double throw relays that are wired directly to the motor-control ports on the NXT. The relays allow the tiny NXT to control the larger motors that allow Salvius to move.