I decided to create a working command block from minecraft. Using arduino and 3D printed case. And here's what I did.
(by _Skrepka)
CB_2_-_Arduino_holder.STL | 13.4KB | |
CB_2_-_Base.STL | 1016.8KB | |
CB_2_-_Bottom_cover.STL | 20.6KB | |
CB_2_-_Top_cover.STL | 85.7KB |