What about using a piezo gyro (available relatively inexpensively with pwm output)? Placing it at 45 degrees to both the roll and pitch axes will allow both wing leveling and some heading stabilization. Jim Leslie Lowe wrote: > Yeah that's a good one, I guess a further question would be HOW TO detect > tilt during a coordinated turn? I am certain you cannot detect a coordinated > turn with either an inclinometer or an accelerometer. I suppose the sensors > would read zero or neutral. > > > "I predict it will be ok during non accelerating forward flight, for which > it will be most of the time." > > > Leslie Lowe -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu