"A accelerometer also works well to coordinate (home) to a Gyro when a gravity exists. http://www.dimensionengineering.com/info/accelerometers  "

"I also dial in a custom build. The weight, propeller diameter and pitch, motors, esc's,batteries used, all take in consideration. I am gracefull that this controller can deal with my variances in atmosphere heat, Density altitude, and the…"

"I would like this. #1 Safety to how others fly with such. #2 The ability to coordinate energies to make flight. Vertical or Horizontal. #3 The play to find how much throw will destroy safely a small hobby that flies as best one can do such."

"I have to say Christopher the artical is enlightening."

"Yes, However they need to spin faster. A propeller is more efficient with a larger area to grab. If they are too slow with larger area then trying to coordinate the attitude of the propellers is bumpy with a 2 blade prop. A 3 blade prop with…"

"This might be a issuse regarding the compass if you are in simple mode. The compass can be interfered with during flight. If it changes from takeoff then there is a condition that wires produce EMF to the compass.  This is caused by throttle to…"

"There are many variables that help flight time. Mostly is the internal resistances of components especially batteries at hot summer weather day's. Looking at Lipo's I've decided on a Gens Ace 40 to 60 C battery at 3S. The lower…"

"I like the ability that the GPS and the Magnetometer (compass) can be moved away from interference."

"Rockwell software with Allen Bradley many years ago developed a fieldbus protocol called DeviceNet. It became open source for a great reason. Many manufacturers could hook up a developed device to its connection protocol and share with other…"

"Very good Vampire looking plane. :-)"

"I flew around today looking at the abiity of the compass learn and auto declinate features. I've found that turning them to 0 (off) that the altitude hold along with loiter are more accurate to the RC controls. Being using the APM 2 it has a…"

" There is a history to how such evolved. Should I google it for you? GIFY? Research is important. It is important to show others what needs to be done.  "

"I had a great time with this build. It works even with a bearing vibrating to the APM2 controller. http://youtu.be/_Zj0cnDryQ4"

"Dealing with a little Fluid dynamics. One has to consider there are pressures that cooincides with area flow. All together with time it makes work in the form of Horse Power. Hp. If this efficent machine can do what it says it would be amazing."

"I've been away for a few months. Many versions have passed. I loaded the code through MP, eeprom erased in CLI and told it to reset. The motors ESC's were individually manually calibrated from the start and still works with this…"

"Make it bigger so it can hit better in competition. Force = Mass times Speed"