ALPHA REX INSTRUCTIONS

Recently I've had an urge to build Alpha Rex. Unfortunately it doesn't show you how to build him in the NXT Mindstorms Building Guide book. I looked for weeks and now have found it on a website. It consists of a step by step guide. The website is http://www.active-robots.com/products/mindstorms4schools/building-instructions/Build-AlphaRex.pdf.

LIGHT SENSOR

Today me and my comrades programmed a NXT robot with Ultrasonic and Light sensors to follow a circuit consisting of a square line made out of black tape. It worked perfectly and the robot completed over 8 laps! A video will be available soon.
Cheers!