Caulm, WOW..... I can hardly wait. I've got my bot built for this. I managed to get it down to 1 rcx. the hard part for me was the code. the programming space is just a bit too small. Right now I can get the beep sequence in 64 "nested if's" and 8 (...) (22 years ago, 1-Apr-03, to lugnet.org.ca.rtltoronto)