(To see a list of all my Quadcopter blogs, click here).
I spent the better part of my Saturday slowly and carefully figuring out how to wire everything up and then executing the wiring. It’s pretty easy, but I found no single source explaining everything.
My first questions were how do you provide power to the flight controller and to the radio receiver as no one seems to talk about it and there are no obvious power connections.
The flight controller gets its power through the positive/negative leads from the ESC connected to the M1 header. So you simply connect the motor and the flight controller has power.
The radio receiver will get power from the flight controller. I’ll show how this is wired up down below.
Here is how I wired up the KK 2.1 flight controller and the Fly Sky FS-R6B radio receiver.
- Unplug the motors from the ESC if they aren’t already. The motors shouldn’t be fired up until initial testing is done.
- Put some tape on each motor spindle so you will be able to tell which way it is spinning. The propellers should not yet be mounted.
- This is my connection diagram:
- Looking at the diagram, note each motor’s number. Oops, I see I numbered them wrong. Front left is 1, then go clockwise 2, 3, 4. I accidentally swapped 3 and 4 in the diagram.
- The ESC controller for each corresponding motor is connected to the header pins M1 through M4 on the right hand side of the controller.
- The black wire for each ESC plug goes on the right side of the connection, near the edge of the controller.
- This website shows a really clean way to connect the radio receiver to the flight controller:
I’m going to borrow his picture in case it disappears because it clearly illustrates what to do:
Between my notes and his pics, hopefully this is clear. You only need to provide the +/- on channel 1. For channels 2-5, you simply need to connect the signal pins. I was originally going to wire the +/- to all 5 channels which would have added a lot of unnecessary wire. This solution is much nicer.
Here is my setup. Each wire is separately colored which might also help illustrate what is happening:
At this point I’m ready to plug it in. Note: I discovered that if you don’t have the radio on before you power up the quadcopter you will get the error No yaw control. Just make sure the radio is on first.
And it fired up on the first try! Yay!