Hey, an Ardupilot newbie here. I am working on a new project ( agricultral spray drone)
the drone will have 240kg total take off weight with 16pcs motor.we would use U15II motor , set up will be U15II KV80 + Flame200A ESC + G40*13.1" propeller at 60V voltage .
Here is the motor detail specification http://store-en.tmotor.com/goods.php?id=731
Ardupilot only supports up to 12 motors at this time. I’ve known people that split the PWM signal coming from an ESC and use it to control 2 motors, but this is obviously not ideal.
I suppose you could use 2 flight controllers, one for each bank of 8 motors and control them with the same RC input. This approach could have some serious issues though.
The easiest thing to do would be build a copter with 12 motors and scale the motor and props up to meet your payload needs.