PICdude writes: > Have you verified that with the slot open/blocked, the voltages at > the PIC input pins are changing as expected? Yes, there is permanently 4.82 V. -- Regards, Paul Chany http://csanyi-pal.info -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist