Assuming both RCXs are facing each other, this can be done by using the IR transmitter of the RCX on the detected robot, and a forward pointing light sensor on the detecting robot. Set one robot (the detected robot) to send out constant IR messages. (...) (25 years ago, 15-Apr-00, to lugnet.robotics.rcx)
(...) This does put quite the strain on your batteries though... Dean -- Coin-Op's For Sale!: (URL) Lego Workshop: (URL) Lego Club: (URL) (25 years ago, 15-Apr-00, to lugnet.robotics.rcx)
