First of all good job it looks awesome. I’m just wondering what buttons you used.
Nice to see that you are building my FMC creation! Nice work! Let me know when you have finished the building and the FMC works....
i use i/o card wihich 8 x 74hc4067 and canbus by Arduino 2560 with Lua script software in Prepar3dv4.x , Fsx and also XP10-11