A while back, there was some discussion on tilt sensors. I followed it from a distance, but you know how things are, you don't pay attention unless you have a current requirement. Now I might have one for these tilt sensors, but I don't remember what was found, and are they digital output or analog? I am thinking of putting something together that sets an alarm if either the X or Y axis tilt further than some n degrees (preset). Did anyone save this information? Harrison Cooper Sr Design Engineer Evans & Sutherland Computer Corp Salt Lake City, Utah www.es.com