DiY Tumbling Machine
Switch branches/tags
Nothing to show
Clone or download
Fetching latest commit…
Cannot retrieve the latest commit at this time.
Type Name Latest commit message Commit time
Failed to load latest commit information.

Do-It-Yourself Rock Tumbler

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

DiY Rock Tumbler

Bill of Materials

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 diameter variable to match the inner diameter of your Jar's cap (it can also be smaller)