G'day, Logitech have a cordless mouse than might be interesting to disect. Cliff Rogers (Computer Technician) email cliffrogers@usa.net Absolute Computers Pty. Ltd. Cairns, Queensland, Australia. Hi! I am going to implement an optical RS232 link between a micro controller and a PC. Has anyone got any experience with this kind of solution? My requirements are not too tough... Range: >10cm Speed: >300bps Could probably be a job for IRDA, but I've got no experience myself, so I would be grateful for any help! Regards, Hevard ----------