Source all components in production files/BOM.xlsx. This list contains links to Dutch suppliers, but in many cases, Chinese suppliers will provide a cheaper alternative. As of early 2022 the mechaduino's seem to be sold out both on aliexpress and at the original designer. Most other closed loop steppers will not work, since they don't provide torque control. However the mechaduino is open source so it should be relatively easy to fabricate your own boards.

Print all the parts in production files/stls. There are quite some big prints so this will take about of week on an average printer.

Laser cut all the parts in production fils/laser cutting out of 6mm thick birch plywood.

The laser cutting leaves black marks on the side of the wood. These can be relatively easily removed with a wet cloth and some sanding. After this the wood should be painted. I used 3 layers of paint.

Connect all the components according to the wiring diagram . Be sure to place the components in 3D printed parts first to make sure you don't need to redo it. Also make sure you cover every solder connection using shrink tubing to prevent a short circuit when you close the enclosure later on.

Drill 4 holes in the wall where you want to mount the sculpture onto. Mount the sculpture using screws and plugs.

Upload the default mechaduino code to both mechaduino's using the arduino IDE. Then connect to each of them separately using the arduino serial monitor. Then run the calibration algorithm by pressing c. After the algorithm finishes it will print a array that needs to be copied in the parameters.cpp file of the code for the front and the back wheel.

Upload the code for the front and the back wheel to the corresponding mechaduino. You may need to tune the PID and friction parameters inside these projects.