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GPS + Control

Finally, I have some free time to work on heli.
Now I am testing a new GPS module based uBlox 6M. It is assembled by drotek.fr and seems promising. It comes with UART (3.3V or 5V) and USB. The antenna has good indoor performance (outdoors tests will come in spring :) )

As the (absolute) heading controller is finished it is time to roll, pitch and thrust controllers.