Hello people. Sorry for this mail not going on the subject of this list, but we may use PIC to control everything. The project that we are developing is a time control of a kart racing. The first option was the use of transponders for Kart identification, but the problem of more then one kart may pass through the finishing line at the same time exists. The other option was the use RF emiters in the kart's. I appreciate that you send me your opinion to this problem, and we are open to other sugestions. Please send me also were we can find FAQ's, Sites and supplier address. Best Regards.