My partner in crime (brother-in-law) and I have combined two of our favorite pastimes, Moteinos and drones, together. I purchased a DJI Phantom 3 Standard drone and proceeded to crash it and break the camera. While we had the camera off the drone we decided to build a telemetry prototype using a Moteino, an Adafruit GPS module, an Adafruit 10 degree of freedom (DOF) Inertial Measurement Unit (IMU), a 1200mAH lipo and an Adafruit charger. Another Moteino on the ground is used to capture and record the various pieces of flight information being transmitted.
Attached are two pictures of the board attached where you would normally see the camera gimble. We've only had one chance to fly it and because it only weighs about half of the normal camera weight, the controls feel normal. We can measure altitude, speed, height, barometric pressure, temperature, compass, acceleration, etc. When I get some more time I'll upload some of the graphs that we did showing speed and altitude.
The next goal is to start making sense of all the spatial data and possibly turn it into something graphical in nature.