Cruise control ----- Original Message ----- From: "Bob Simpson" To: Sent: Wednesday, July 16, 2003 11:27 AM Subject: [OT]: Car Speed Warning Here in the UK the number of speed cameras on the roadside has increased to silly numbers. One of my friends was caught at 34mph in a 30 limit (mine was 36mph). I now try very hard to stay at 30mph. I want to build a speed monitor using a PIC and a buzzer. Get to the speed I want and press a button if I go over that speed the buzzer sounds. I drive a VW which sends a 'speed signal' to the radio to adjust the volume. This I understand is taken from the speedo. My question does anyone know what this signal is and how to identify it? Any suggestions or help appreciated. Regards, Bob -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics