X250 MWC Quadcopter

This was my first attempt at a MultiWii quadcopter, after having owned a KK board for more than a year. I decided to get a microquad because I wanted something that was small yet agile. Looking around at different possibilities, I found a great deal on an X250 MWC Quadcopter with an integrated controller board and LED lights built into each arm. The quadcopter cost $160 (shipped) and was super easy to build - given that you can solder things together. Below, I have a basic break down of the build process I went through in assembling the quadcopter. For a more thorough build log, I have my build documented on my website:

http://www.rctutor.org/x250-quadcopter.html

These were all the components that came with the quadcopter. Everything from standoffs and bolts to propellors and heat shrink were included.

I secured the motors to each arm using 4 bolts per motor. I then soldered each of the motor leads onto the solder pads that were integrated into the arms.

Once all four arms were finished, I secured them to the bottom center plate using standoffs and bolts. The bottom plate housed a power distribution for the ESC's and the LED's as well. It also had an integrated switch for turning the LED's on and off.

Next, I began assembling the top sections of the arms that would hold the ESC's in place.

These weer the ESC's that came with the quadcopter. They were HobbyWing SkyWalker 12A ESC's. They came with bullet connectors already soldered with heat shrink applied.

I cut the ESC wires and soldered them onto the solder pads on each arm. These solder pads were directly connected to the motor wires I had soldered at the beginning of the build.

Once the ESC's were soldered into place, I connected the top sections of the arms into place. I also took this time to secure the landing gear below each arm.

With the ESC tucked into place, this is what the arm looked like once completed.

Next, I took the positive and negative wires from the ESC's and soldered them onto the power distribution board.

I then took all the ESC wires and bundled them up into a neat loop and used a zip tie to hold them in place.

This was my OrangeRX receiver. I took it out of its case and applied black heat shrink around it. I did this to minimize its size and make it small enough to fit inside the quadcopter.

I placed the receiver along with the bundle of ESC wires between the top and bottom plate of the quadcopter. I had to lay everything out carefully so that no wires or pins would short against the bottom of the board.