This is the base design has a 30.5×30.5 mounting pattern seen on some BQE and Hyperlow frames and is intended to be used with the 20mm Universal Camera Mount.
Guide for 3D printing the gimbal design here.
Files on Thingiverse: https://www.thingiverse.com/thing:5539339
Design commissioned by: Richard Howarth
Medlin Drone 