I was just talking to the Analog Devices FAE and he was telling me of thier one-wire temp sensor stuff, with a master controller that converts to I2C. Might check it out. Uses a PWM method to communicate over the wire __________________________________ Do you Yahoo!? Check out the new Yahoo! Front Page. www.yahoo.com _______________________________________________ http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist