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Open Source Hardware

RADR is genuinely open source hardware. The project is licensed under the CERN Open Hardware Licence Version 2 - Strongly Reciprocal (CERN-OHL-S v2), the same license used by the OSSM.
The strongly reciprocal nature of CERN-OHL-S v2 ensures that derivative works remain open source, protecting the community’s collective efforts.

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What This Means for You

When you contribute to the RADR GitHub repository, your contributions fall under the same CERN-OHL-S v2 license. You can find the complete license text in the licence documentation.

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You Can

  • Use RADR designs and software freely
  • Study how RADR works and learn from its design
  • Modify the hardware and software to suit your needs
  • Share your modified versions with others
  • Build and sell RADR units (with attribution and source sharing)

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You Must

  • Share alike — If you distribute modifications, they must be under the same license
  • Provide source — Make your modified designs available when distributing products
  • Retain notices — Keep copyright and license notices in place

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Source Files

All RADR source files are available on GitHub:

Hardware Files

PCB designs, schematics, and 3D print files.

Firmware Source

Complete ESP32 firmware source code.

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Hardware

  • PCB Design Files — Altium Designer project files for the main board
  • Schematics — Full circuit schematics in PDF and native formats
  • Bill of Materials — Complete parts list with manufacturer part numbers
  • 3D Print Files — STEP and STL files for the enclosure

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Software

  • Firmware — ESP32-S3 firmware written in C++ using PlatformIO
  • Libraries — Custom libraries for display, Bluetooth, and device control
  • Device Registry — JSON configuration for supported Buttplug.io devices

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Community Contributions

Open source means contributions can come from anyone, anywhere. Before using or contributing to RADR:
  • Review the safety guidelines thoroughly
  • Understand your personal risks and boundaries
  • Familiarize yourself with the contribution process

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Why Open Source?

We believe in:
  1. Transparency — You can verify exactly what your device does
  2. Repairability — Full documentation means you can fix and maintain your device
  3. Customization — Modify the design to suit your specific needs
  4. Community — Build on the work of others and contribute back
  5. Longevity — Open designs outlive any single company
RADR is part of the Research And Desire ecosystem, alongside other open source projects: All share the same commitment to open source hardware and community-driven development.