This is a tiny MultiWii FC integrated with 7-Channels DMS2 RX module. Weight is just 70g and it can fit into mini Quad or Hex copters

You can have more details at following link:

http://www.droneasy.com/index.php/electronics/flight-controllers-2/wmc-mini-fligh-controller.html

A new quad X FPV frame for APM 2.0/2.5 board.

http://www.droneasy.com/index.php/multicpoters/frames/reptile-quad-x-fpv.html

A nice low price uBlox GPS with case and mount for $34

http://www.droneasy.com/index.php/electronics/gps-2/ublox-g6010-gps-kit.html

I am curious about and learning Vortex Maths of Marko Rodin and Double Torus Universe pattern and how they can apply to radio communications and I found someone already did.  Vortex radio waves could boost wireless capacity “infinitely”. Using this method to boost bandwidth of ground station and drone radio communication.

From the article:

After four years of incredulity and not-so-gentle mocking, Bo Thide of the Swedish Institute of Space Physics and a team in Italy have finally proven that it’s possible to simultaneously transmit multiple radio channels over exactly the same wireless frequency. In theory, according to Thide, we could potentially transmit an “infinite number” of TV, radio, WiFi, and cellular channels at the same time over the same frequency, blasting apart our highly congested wireless spectrum.

Thide’s approach is rather simple. Basically, electromagnetic waves can have both spin angular and orbital angular momentum (OAM). If you picture the Earth-Sun system, spin momentum is the Earth rotating on its axis (producing the day-night cycle), and orbital momentum is the Earth rotating around the sun (producing the seasons). In standard wireless communications — radio, TV, WiFi — we only modulate the spin angular momentum of waves. For years, Thide had theorized that orbital angular momentum could also be added to wireless signals, effectively creating a spiral signal that looks like fusilli pasta; or, in the words of Thide, a “radio vortex.”

Now, in an experiment in Venice, Thide and his Italian colleagues have transmitted two signals at the same time, on the same frequency, over a distance of 442 meters (1450ft). Pictured on the right is the antenna that the team used. No, your eyes don’t deceive you: To create these radio vortices, all you have to do is make a cut in a standard parabolic reflector and twist it slightly. If you imagine a corkscrew of radio signals being continuously transmitted from the outside edge of the antenna, that’s effectively what’s occurring. On the receiving end, there are two “normal” TV antennae (Yagi-Uda) set apart by the same angle as the break in the transmitter. These antennae “decode” the vortex, and voila: Two radio signals transmitted over the same frequency.

I just think how to build a highly sensiive antenna for my drone using Golden Ratio. Eric Dollard give me the answer.

The Camp David Antenna

I know a windy day is bad day for drone tuning. But I am testing the autotrim function of Mission Planner today.