I learned a few things at the Meetup that I will pass along.
- Flying with larger propellers will make your video smoother but make the quadcopter less maneuverable. I have 10 inch props on my homebuilt but I could go to 12 inches.
- You cannot assign a separate channel to the AUTO function on your APM which triggers an autonomous mission. AUTO is just a flight mode so it must be controlled by the same channel that allows you to use Stabilize or Loiter. That was one of my questions that I got answered.
- There is a capability called "OpenTX" that allows you to program inexpensive radios to do almost anything. The radio is the 9X which is available branded Turnigy, Flysky, etc. and costs $50 or so. You can also add a board inside the transmitter to allow USB hookup, it is from Smartieparts and cost about $20.
- You can get plans to print a quadcopter frame using a 3D printer.