I am Bill King, the contributor of singlecopter code, Recently I received questions about singlecopter.First , add a message on the wiki about singlecopter. Suggest using digital servos , otherwise change SV_SPEED to low frequency.Second, please…
"And a custom mode which is supported in openpilot ground station may be the most flexible solution for apm as well. I think the mission planner and arducopter firmware should learn from openpilot on that.…"
"Hi, Randy, a coaxial copter is a good idea and I have yet considered this kind of airframe. I support another coaxial copter firmware but I have not built a coaxial copter airframe. And some tests are needed.
Here is an interesting coaxial copter…"
"OK， channel 1 is front , channel 2 is right, channel 3 is back, channel 4 is left. channel 7 is motor.
you can configure your trim and direction of servos with a series of parameters with the Prefix of ss1, ss2, ss3 and ss4.
Good luck and enjoy it!…"