The whole controlling logic can be found at src/filament_changer.rs. ESP32 pinout configuration can be found at src/main.rs.
Bill of materials:
| qty | product | link |
|---|---|---|
| 2 | Nema17 17HS4023 | https://www.aliexpress.com/item/1005005907696088.html |
| 1 | Bambu Lab 3D printer Part 4-in-1 PTFE Adapter | https://www.aliexpress.com/item/1005006962712897.html |
| 4 | M4 12mm Hex Bolt | |
| 1 | MK8 Extruder Drive Gear 9mmx11mm 5mm hole | https://www.aliexpress.com/item/33001874597.html |
| 1 | DC 12V to 3.3V 5V 12V Step Down Buck Power Supply | |
| 1 | DC 12V 3A Power Supply | https://www.aliexpress.com/item/1005007419359413.html |
| 2 | BIGTREETECH TMC2208 V3.0 | |
| 1 | ESP32 WROOM 32 CH340 | https://www.amazon.de/dp/B0D9BTQRYT |
| 1 | LM2596S DC-DC Power Supply Step Down | https://www.amazon.de/dp/B089QJM8KQ |
Pseudo schematics:
Note: Stepper A is the filament selector and Stepper B is the one that loads/unloads the filament.