Dear Sir or Madam,
I have designed, built and flown numerous fixed wing and rotary wing drones and UAVs. I am also experienced with programming Arduino and other microcontrollers, such as ARM devices. As you will see on my profile, I have a 20-year background working on full-sized aircraft avionic systems, which may also be useful for your project. I am also experienced in developing real-time control systems, PID controllers and sensor systems, such as IMUs etc. I have also built my own FPV video transmission systems and antennas for the 5G8 band.
I am happy to use Skype to have regular discussions regarding project progress. If you want a professional avionics engineer - I am your guy!
Best regards,
Ben Cook