Printing this was straight forward. Building on the other hand was kinda finicky.

For the first test run, I build it without using an LC filter, but I might add one to make sure the camera is less noisy. Placement of the crossfire receiver is somewhat bad too. Due to it being so close to the VTX causes black lines in the FPV feed. I had similar issues on other quads and fixed it, my moving the two parts as far away as possible. Not an option here though.

First flight
It was okay. It does get off the ground and it stays in the air if I want to. No random crash and no other weird behaviour I haven't seen so far. So all in all, it just requires some fine-tuning.

Next steps

• get a few more different 18650
• find a proper placement for the RX antenna. Right now, it's just dangling around. Probably even switch over to the stock "Immortal L" antenna and mount it to the arms
• get a lightweight omni antenna

And in the end, it needs a bit more tuning. I tried Dave's initial Pid tune, BF's stock tune and The UAV's cruise tune. None of them worked perfectly well, so it just comes down to some fine-tuning to reduce wobbles a bit

All in all, thanks to Dave for the design, the BOM and the wiring schema. I had most of the parts since I wanted to build my own 1S babytooth, but ended building this thing instead.