Beltless motorized camera slider

This slider is designed to have all the control electronics in the carriage. This allows you to make it as long as you want simply by stretching the tracks. It can be controlled via bluetooth from a smartphone or can be programmed to follow a certain movement. It also has ribaltabile stands, so if you mount it on a tripod, the stands are hidden.
https://youtu.be/PIq2OaEJkaU

To build it, you will need extra material:
-2 ⌀8mm steel bars (as long as you want)
-1 15x15mm aluminium square bar