What better idea to come up with to test the HiTechnic colour sensor then to build a LEGO brick sorter. So, that’s what I did. After quickly learning that the sensor does not read colour from a distance (in my excitement I forgot to read the documentation), and creating a room navigating robot (see CT1 on my site), I decided to test its brick sorting abilities… Ok, the sensor only has to tell the NXT what colour it sees, the robot has to do the rest. Anyway, for details a video and more pictures, have a look at my site at: www.plastibots.com