> Maybe i'm mistaken but one of the videos you > posted links to seemed to be suffering from > real obvious ground effect instability when it > was trying to land, when the rockets got maybe > 6 inches from the ground. Could be the case at 6" off. As likely though to be human operator on joystick trying to juggle landing. Maybe not. > I just looked at it and thought "rocket position > redesign". Obviously the crew there thought > "faster more expensive control computer". > $8000 US for the control computer?? Wow. > I'm sure you could use one PIC, any takers guys? I don't think the computer onboard is quite in that class!. The main single "electronics" cost onboard in a Crossbow brand 6DOF inertial navigatin unit - laser gyros and accelrometers. About $US5000 AFAIR. Russell -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.