Lego Loom

Uses an RCX, 6 motors, 3 light 3 touch sensors. Software sequences the 4 peg patterns, such as 1,2,3,4,1,4,3,2, etc. A message from the Lego remote control pauses the software so that it continues at the correct place in the sequence after the bobbins are replaced. If the shuttle doesn’t make it across in time (tangled (rare!)), the software pauses and keeps place until the human fixes it and sends the message to continue.