A simple Rock Tumbler I built from scratch in just a few hours.
For more information read the blog post: Improvising Hardware: DiY Rotary Rock Tumbler
| Name | Quantity | Unit Price | Link | Comment |
|---|---|---|---|---|
| Bipolar 1.7A 2.8V NEMA-17 Stepper Motor | 1 | $16.95 | Pololu or AliExpress | |
| DRV8825 Motor Driver | 1 | $8.95 | Pololu or AliExpress | |
| Pixl.js Espruino Board | 1 | $44.95 | Espruino or AdaFruit | |
| KY-003 Hall Magnetic Sensor Module | 1 | $0.82 | AliExpress | |
| A small magnet | 1 | |||
| 28.8cm M4 Threaded Rod | 2 | - | Different length possible | |
| M4 Nut | 18 | |||
| M3x10 Screw | 12 | |||
| M3x8 Screw | 1 | |||
| M3 Nut | 9 | |||
| M3 Washer | 16 | |||
| M2x16 Screw | 2 | |||
| M2 Nut | 6 | |||
| 624ZZ Bearing | 8 | |||
| Small Plastic Jar | 1 | |||
| Small Plywood Board | 1 |
You can replace the Pixl.js with a Arduino, though the built-in display make it really nice.
You also need to print 1 of each of these parts:
- motor-mount.scad
- motor-hub.scad - You may need to change the
diametervariable to match the inner diameter of your Jar's cap (it can also be smaller)