This Lego robot executes "commands" represented by colored lego bricks on the conveyor belt on top of the robot. Blue means forward, red play a beep, green and yellow turns the robot about 90 degrees. White is the stop bit, and black is used to align the program before start. See http://jakob.engbloms.se/archives/1086 for more.
sorry for the late reply, but a 1x4 or 1x3 brick fit perfectly on a single link of the belt/caterpillar tread. The studs in the brick line up with the holes in the link,
feppfepp 1 year ago
thats really cool! you can change what it does by replacing the lego blocks!
Betelgeuse150 1 year ago
@Betelgeuse150 : Yes, that is the idea. Works pretty well with the kids.
feppfepp 1 year ago