Free-flight glider competitions, which don't use RC control, usually use mechanical compasses to keep the glider pointed into the wind. But an autopilot can do it even better. Tom Pycke modified his Gluonpilot autopilot to do this. Cool!
On request, a special version of the gluonpilot has been created to be used in F1E (free flight gliders) competition.
This is how the gluonpilot adaption works:
- A 3D magnetometer is connected to the 3V3 I2C port.
- Before launch, the model is pointed in the correct direction and the SMD button on the PCB is pressed. From then on, the output on servo 1 is proportional to the "heading error". With a rudder servo connected to servo 1, the plane will always fly in this direction.