Well, I tried powering the circuit off a battery and without having the mains plugged in, or the switch cord(6ft) plugged in, and unit STILL is affected by the microwave and fridge kicking on/off. I was even using a scope on a different ac line from the microwave and fridge, and I saw the EMI/RFI on the scope input(while looking at a captured waveform on a entirely different project). I also tried a 12f675 instead and it still exhibited the same problems. andrew -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist