Ball-track with an elevator

Описание к видео Ball-track with an elevator

I soldered a ball-track using a steel wire and put an arduino-clone to control the elevator lifting a steel ball.
To make a sand-like surface - epoxy and ceramic dust were used.
To drive the elevator I used a NEMA17 stepper and DRV8825 stepper driver.
The speed of a mechanism is controlled by the know on the front panel.

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