> You might not like the whining coming from the lights either though.... > PWM at 40kHz would be easier on the ears, and would possibly repel mice > too... You'd have to try it to be sure, but the bulbs don't "whine" much at 120Hz, so I wouldn't expect much at higher frequencies either. ******************************************************************** Olin Lathrop, embedded systems consultant in Littleton Massachusetts (978) 742-9014, olin@embedinc.com, http://www.embedinc.com -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.