I wanted to build 3" quad based on Dialeksi's AC3 -frame (https://dima.fi/fpv/anticrime/) and have a theme color of Red and Black.

I designed and 3D printed spray painting template for the frame and also designed mounts for the Frsky r-xsr receiver and mount for Eachine TX805 VTX.
Custom VTX mount and shorter standoffs allowed me to make the whole frame 2-3mm lower and make it slimmer.

This frame is flying super smooth with these parts and BetaFlight 4.0 (default PIDs)!!! Really loving it :heart_eyes: .

Technical details

• HD video via RunCam Split Mini 2
• Smartaudio used to control the VTX
• Full telemetry received from the Frsky R-XSR.

Custom 3D-parts

• VTX mount to top plate
• R-XSR receiver mount to back standoff (as close to antennas as possible)

3D-printed parts that came with the frame

• VTX and RX antenna V-mount, https://www.thingiverse.com/thing:3421083
• GPS mount, https://www.thingiverse.com/thing:3456627
• Camera mounts, https://www.thingiverse.com/thing:2874148
• 20x20 mount for Eachine TX805 https://www.thingiverse.com/thing:4308367

"A red–black tree is a kind of self-balancing binary search tree in computer science." - https://en.wikipedia.org/wiki/Red%E2%80%93black_tree