additional task related phase 4

I do not finish all tasks related phase 3&4 and I cannot run final Pixhawk calibration.
There is one missing element before copter will be completed, it`s stand for Pi camera. Finally this element will be print out as same as landing gears using 3D printer. Yesterday I did order it in printing company and I hope I will receive it very soon. This is the cheapest way to have it well connected to frame. This element base on project available at thingiverse portal ( details >> ) and it will look like as following one:


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