Basically I modified the original battery-tray and designed a mount to get the yaw-motor fixed in front and up a bit. Then I made the arm from the yaw- to the roll-motor.
I took the remaining parts from my 2-axis gimbal, wich in turn is a remix of MikeyB´s gimbal.
The first version showed extreme shaking and trembling. Members of the rcgroup helped me to find out, that the tray with the gimbal in front is a cantilever and that the vibrations led to a kind of mechanical resonance which caused the shaking. The battery-tray and the top-arm where not stiff enough.
So I made the tray-front thicker, the motor-mount shorter and the arm stiffer - this helped. Have a look at the video. The short footage was not stabilized afterwards.
The gimbal-controller (I used a STorM32) is mounted on top of the flight-controller (https://www.thingiverse.com/thing:1947094) - as it is with the original crossfire. I use MikeyBs skids (https://www.thingiverse.com/thing:244567) with the Skid Skids (https://www.thingiverse.com/thing:285292) and the arm 3.0 (https://www.thingiverse.com/thing:285292).
The PID-Settings in the picture work for me.
Update: I removed the status "Work in Progress". This thing works for me as it is.
| axis_gimbal_arm_2_kuerzer.stl | 151.3KB | |
| gimbal_arm1_short.stl | 190.2KB | |
| gimbal_arm2_longer.stl | 103.0KB | |
| gimbal_runcam2.stl | 1.3MB | |
| motor_halter4_kuerzer.stl | 54.0KB | |
| tray_stiff.stl | 172.6KB |
