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[PSUBS-MAILIST] Gyro hover control



Hi Guys,
Have been coming across these Quad copters (or Quadcopters) lately.
Some of these 4 motored RC helicopters are controlled by I phones. Others are a bit more
complex with 3 axis gyroscopes, 3 axis acceleration sensors & cameras mounted on them.
http://www.google.co.nz/imgres?imgurl=http://www.infmetry.com/wp-content/uploads/2010/08/XAircraft-X650-QuadCopterQuadRotor-cool-photo.jpg&imgrefurl=http://www.infmetry.com/coolstuff/xaircraft-x650-quadcopterquadrotor/&usg=__YhyQGI213K-auhngjuvV1rVcrEM=&h=518&w=665&sz=34&hl=en&start=34&zoom=1&tbnid=mAn-FeukTZzBJM:&tbnh=107&tbnw=138&ei=-SRdT7OuLeW5iQfywPmvDQ&prev=/search%3Fq%3Dcell%2Bphone%2Bhelicopter%2B4%2Bmotors%26start%3D21%26hl%3Den%26sa%3DN%26gbv%3D2%26tbm%3Disch%26prmd%3Divns&itbs=1
Possibly the gyroscopic control system could be adapted to control the pitch, roll & depth of a sub, if the sub had 4 vertical thrusters.
I thought of the "James Bond" car / submarine that Vance had some involvement with. He said it had to be towed by wire
because it's stability was so bad. This would have been an ideal candidate.
The controller on its own sells for $30-
http://www.dealextreme.com/p/kk-multicopter-controller-full-set-107408
Haven't given this a great deal of thought but am throwing the idea out there.
Regards Alan