I'm trying to get the Lego Technic CyberMaster C2 (8482-1) working on my Mac using Swift. I've lost the original cable and have no idea about wiring or protocol. I can make the transmitter "blink" using a null modem cable but nothing is received on the receiver. Does anyone happen to know if the RS232 serial cable specs are documented anywhere? Has anyone already reverse engineered the protocol? It's a tricky one because I'm not sure if it's: a) My dodgy cable b