OpenScan Mini


This is the most recent development of the OpenScan Project. This scanner is aiming at small objects of up to 9x9x9cm and my main focus is the usability of the device. For now it runs with the existing pi-image, but I will release an updated and dedicated user interface as soon as possible.


This is a preliminary and experimental version and there might be some changes in the future. Nevertheless it is fully compatible with the existing pi-shield and the only adjustment that needs to be done is the gear ratio for the rotor, which is 48000 (instead of 17067).

Furthermore you will need a 50cm camera ribbon cable and a 50cm JST-XH-3P cable for the ringlight.

When ordering the parts through my shop, please add a remark on checkout "OPENSCAN MINI".

If you like my work and want to support the project and further developments, you can support me via: BuyMeACoffee

Bill of Material:​​


  • Raspberry Pi 3B+ or 4

  • Pi Camera v2.1 (8mpx) with 50cm ribbon cable

  • OpenScan Ringlight + 50cm JST-XH 3P cable

  • OpenScan Pi Shield

  • Nema 17 Stepper Motor

  • 2x A4988 Stepper driver

  • 12V 2A Power Supply

  • 25x M3x8mm

3D Printing the parts

All parts are designed printer-friendly and are thoroughly tested. Still the print results and especially the clearances might vary from printer to printer. Please print the tester first to see whether your settings are dialed in properly.

Future Developments 

  • Pi HQ Camera Support (which is working, but still lacking a proper lens for close-range photography)

  • Cloud Processing ("One-Click-To-Scan-Button") via Autodesk Forge or other provider

  • Many new software features like live-image-quality-analysis, simplification of the user interface

  • Adding a touchscreen

Feel free to share any ideas and remarks

To stay tuned either check out my blog or subscribe to the newsletter.



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