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Hi DIY guys, I would like to show you my almost finished Tarot FY680 setup.

I saw different approaches for ESC mounting. I choose bottom because a couple of reasons:

1-My motors wires were long enough to reach central frame, they came with 3.5mm male gold connectors.
2-I like ESC free arms, and I don't think hot dissipation will be an issue for this setup. 

So the frame remains being foldable even with ESC out of the arms. 

I decided not to use standard payload bars to fix my ASP Brushless Gimbal. Instead I 3D printed 4 plastic adapters to fix gimbal using M3 screws and Tarot originals plate holes.

Flight controller mount was more easier I printed out a case from Thingiverse.com APM 2.5 Case. I just made some changes to fit horizontal pin out. 

Landing gear was a more complicated. I took 2 standard electric landing gears for planes and replace the rotary plastic piece for a custom 3D printed. Also I printed out a wrapper in order to fix the leg to the fixed middle arm. 

The leg is wrapped by another 3D printed part which is the weakest part of the assembly so I'm working in different way to handle the leg without exposing an-isotropic weaknesses of ABS FDM printed parts. 

System looks weak for rude landings, but It handles vertical hard landings easily. I didn't try yet landings with horizontal velocity or over irregular ground, and I wont. It works well considering it only cost $ 70 while a prof. solution can cost more than $ 800. Now I'm waiting for a new 3-axis gimbal.

Some tests here:

GPS and radio goes to a pretty case which I made my self. You can get it from http://www.thingiverse.com/thing:148552

This case was meant to hold CRIUS GPS module not a 3DR GPS. If you have a 3DR take a look to this one http://www.thingiverse.com/thing:91847.

Resume: 

Motors HP2814 - 810kv

Props Carbon fiber 13x6.5

APM 2.5

ESC 30A

CRIUS GPS v2

3DR 433Mhz radio.