Electron wrote: > NOTE: all I really need is to know the inclination of my vehicle (dirt bi= ke) > but as I said the vibrations are extreme, and the mounting point can't be > chosen/changed (it's on the frame). I figured as much. But in that case, you really only care about the orientation of the acceleration vector, not its magnitude, right? Vibration will affect that calculation, too, but it should still be a usabl= e result. Or are you using the magnitude value to try to decide whether or no= t the bike is moving? -- Dave Tweed --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .