This is 8th video in this video series and it's about installing the brain - KK2.0 flight control board.
The most important thing when installing a flight control board is to reduce vibrations as much as possible. Most flight controllers (KK2.0 included) use gyros and accelerometers to stay in the air. These components are very sensitive to vibrations. The more vibrations they pick up the worse they will perform. Balancing your propellers and motors (reducing vibrations) is one part of the story which I will show you in future videos. The other part is vibration isolation. People use different methods to isolate boards from the frame, but since this is simple/beginner build I've used very basic technique.
Putting foam washers removes direct contact between a screw and a plate. So vibrations must travel through the foam in order to reach the board which will result in significant reduction. Moreover, I've used two levels of isolation. Upper frame plate is isolated from the main frame, and the board is isolated from the upper frame. Granted, there are some better materials for vibration reduction but not everybody has them. Foam, on the other hand, is relatively easy to come by.
I've replaced posts that came with SK450 kit (longer ones) with 6 mm short ones. That gives me lower profile which I need for something in the future (surprise! ;D). Also, the quad looks neater because it's harder to see all the wires hidden underneath the upper plate. But, you can use longer posts with no problem at all. It's even easier to build the quad since you don't have to struggle with small space underneath.
Customising the speaker is optional. You can simply plug it in as it is and put it somewhere on the frame. I didn't like extra wiring so I've decided to make it compact and cool. :-P
1. Making foam donut washers the way I've showed in the video is a pain in the but. However, if you don't have nothing else, it's the way to go. Easier way is to use two sharp metal tubes/pipes (3 mm and approx. 5 mm) and simply twist them in the foam. That way you will be making them faster and they will turn out nicer. You can even buy them somewhere if you want.
1. When customising speaker, make sure you bend the pins the right way. If you bend them the other way the speaker will be facing backwards when plugged properly into the board (of course, that's OK if you want it to be like that).
KK2.0 flight control board (with the foam peace and the speaker)
JST male connector
Upper plate from SK450 frame kit
M3 12 mm nylon screws
M3 20 mm nylon screws
M3 nylon nuts
Soldering Iron (30W)
Any 30W (or similar) soldering iron
Third/helping hand tool
Wire cutters & Nose pliers
Mouse pad or any other source of foam
3 mm and 5 mm drill bits
A drill and a #1 phillips screwdriver
Enjoy RC as much as I do! :)