This project has been a highly requested project that I created a long time ago and never got around to sharing. However, with MSFS taking the Cessna to a whole new level, this is a fantastic self-build project.
A self-contained unit with one analogue axis is required for control. This unit has a proportional trim indicator, and the unit functions exceptionally well. The external box can be mounted vertically or horizontally and trim the aircraft perfectly within MSFS. I have added bearings for extra smoothness and control feel, but they are not required ( you would have to adjust the files accordingly).
 
The build and parts guide is coming!