They're still available. Called the HAL 2001. Cost about 50 pounds.... Ben ----- Original Message ----- From: Alan Gorham To: Sent: Friday, August 24, 2001 4:42 PM Subject: Re: [EE]: "Tilt-o-meter" for RC plane > A couple of years ago in the UK, there was a wing levelling/autopilot device > that used optical technology. > Basically, by sensing the difference in light level between the ground and > sky on the horizon the device was able to keep the plane in level flight and > on a straight heading. > > It had an adjustable gain control that allowed the pilot to set the amount > of correction the autopilot applied. > > I flew someone else's plane with one of these devices fitted and it was > pretty impressive. > > I'm not sure if it would be exactly what is required here, in that it is > more of a stabilising device rather than a true controlling device. > > -- > http://www.piclist.com hint: To leave the PICList > mailto:piclist-unsubscribe-request@mitvma.mit.edu > > > -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.