Scanner Turn Table / Rotary Table / Plateau scanner 3D

I have used this support to fix a plate on a stepper motor (https://fr.aliexpress.com/item/2017-New-5V-Stepper-Motor-28BYJ-48-With-Drive-Test-Module-Board-ULN2003-5-Line-4/32812678814.html?spm=a2g0s.9042311.0.0.JKtXTR).

The program I use has been written with mBlock for a school project.

I have mount my stepper motor on the Silent_Bob project with 608ZZ bearings (https://www.thingiverse.com/thing:1826589). The Arduino Nano board has been mount in a Sardauscan box (https://www.thingiverse.c