TCAS
For the TCAS used the 7-segment displays, circuit board and rotary encoders from Opencockpits. See below. I put a small piece of transparent sheet between the black borders to create a seal above the 7-segment displays. In the STL zip you will find a readme file with everything you need.
The 7-segment displays, 5 units amber (Opencockpits) (I soldered 1 display off it)
The rotary encoder I used (Opencockpits)
This pushbuttons (SPDT) I used for the corry switches (Amazon)
The rotary switch I used (Reichelt)
The zip with the STL-files
The original Fusion 360 files