Take a look at the Freescale 7260Q tri-axial acceleromenter at http://www.freescale.com/ (where else?). This is a programmable device (1.5, 2, 6 etc gees) that might fit the bill for you. HTH Vic ________________________________________________________ Victor Fraenckel - The Windman victorf ATSIGN windreader DOTcom KC2GUI Home of the WindReader Electronic Theodolite Read the WIND -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist