Motorized Archimedean Screw Elevator

I am excited to share my first fully functional automated marble machine! 🥳 This project features a motorized Archimedean Screw that lifts the ball back to the starting point, creating a continuous, mesmerizing loop.

https://www.youtube.com/watch?v=2HKvAFDVWU4

It’s an experimental but working build, perfect for anyone interested in mechanical automation and marble runs.

⚙️ Technical Specifications
- Lift Mechanism: Archimedean Screw (Śruba Archimedesa).
- Drive: 28BYJ-48 Stepper Motor.
- Ball Size: Designed for 0.5" (12.7mm) bearings.

⚠️ Critical Assembly Note (Read before printing!)
During the prototyping phase, I discovered a tight clearance issue in the main housing. To make the motor fit correctly you must cut off one of the motor mounting tabs/brackets. 🪚