On Thu, 22 Aug 2002, Bob Japundza wrote: >Jim, > >I have set it as you describe and have no idea why it isn't triggering. >The dc output of the gyro is proportional to rate acceleration, approx >20mv/deg/sec. I do get some sine waves on the display, but when I rotate You want to get rid of the sine wave and just use the DC component. The sine wave is noise from the synchronous rectifier inside the gyro, not your useful signal. Your useful signal is 2mV/deg/sec afair and it drifts up to ten times as much with temperature and the time of day and the course of the yen. Murata and Tokin have app notes for their gyros. How about taking a look ? Probably then one for the make you are using ? Peter -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.