Ca me rappelle les parties de pêche qui se finissent en perruque!
(ou de cerf-volant!)




François ROBERT 


----- Mail Original -----
De: "ocrteam" <[email protected]>
À: "electron libre" <[email protected]>
Envoyé: Jeudi 28 Janvier 2010 10h13:28 GMT +01:00 Amsterdam / Berlin / Berne / 
Rome / Stockholm / Vienne
Objet: [electron.libre] un hélico "scientifique"...

l'image parle d'elle-même...

Here you'll find all the source code and many notes used in  
Vicacopter, still the only English language source code for a fully  
functional helicopter autopilot that you can download without paying  
for.

You need to be an expert in PIC assembly, electronics, & the  
VicaCopter source code to actually get it to work, but this is actual  
source code flying our autonomous VTOL aircraft, not an incomplete  
stage which can't hover. If you ever succeeded in downloading the  
source code & building your own VicaCopter, you still probably  
wouldn't know half of what she can do. There is no support or warranty.

Vicacopter uses a ground computer for flight control. An airborne  
microcontroller handles rate damping, PWM, & sensor capturing. The  
ground computer handles navigation & provides a simple instrument  
panel. Because you need a radio modem & ground station either way,  
it's the cheapest way to fly.

Airframe #1 was a Corona 120. That flew for 1 year & is no longer  
manufactured, so it was replaced by a flybarless T-Rex 450. That flew  
for 1 year & got too expensive. Then came a quad rotor, but it was  
tricky to balance the yaw force, the counter rotating propellers were  
expensive, & motor shafts always bent. The latest airframe is a tri  
rotor & it is the cheapest & easiest route into the air of all. The  
servo has never gotten damaged & it has 1 less power system to break.

VicaCopter supports 2 configurations:
3 gyros & a sonar transducer for the minimal autopilot.
6 DOF IMU, magnetometer, barometer, GPS for the full autopilot

http://vicacopter.com/

Olivier
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