Open Source Sharing

Chapter 7: Contributing to Open Hardware

Why Open Source?

Community Benefits

  • Collective improvement through iteration
  • Accessibility for all skill levels
  • Transparency in design decisions
  • Education through shared knowledge

Personal Benefits

  • Learn from others’ modifications
  • Get feedback on designs
  • Build reputation in maker community
  • Contribute to coffee culture

Licensing Your Work

Choosing a License

For hardware projects, consider:

  1. CERN Open Hardware License
    • Designed specifically for hardware
    • Strong copyleft provisions
    • Requires attribution
  2. CC BY-SA
    • Creative Commons Attribution-ShareAlike
    • Good for documentation
    • Widely understood
  3. MIT/Apache
    • Permissive licenses
    • Good for associated software
    • Maximum freedom for users

JMC License Choice

The NoDrip XL is released under Creative Commons Attribution-ShareAlike 4.0 (CC BY-SA 4.0): - Attribution: Credit Jason Makes Coffee (JMC) and link back to the project - ShareAlike: Any remix must remain under CC BY-SA so improvements stay open - Encourages derivative sharing - Compatible with commercial use

Sharing Your Designs

Essential Files

project/
├── CAD/
│   ├── source/          # Original CAD files
│   ├── exports/         # STL, STEP files
│   └── drawings/        # Technical drawings
├── docs/
│   ├── assembly.md      # Build instructions
│   ├── bom.md          # Bill of materials
│   └── photos/         # Process photos
├── firmware/           # If applicable
├── LICENSE
└── README.md

Documentation Standards

README Structure

  1. Project description
  2. Features and benefits
  3. Requirements (tools, materials)
  4. Quick start guide
  5. Detailed documentation links
  6. Contributing guidelines
  7. License information

Assembly Instructions

  • Step-by-step photos
  • Common mistakes to avoid
  • Required tools list
  • Time estimates
  • Difficulty indicators

Version Control

Git Best Practices

# Good commit messages
git commit -m "Add: TPE gasket groove dimensions"
git commit -m "Fix: Increase wall thickness to 2mm"
git commit -m "Docs: Update assembly instructions"

# Tag releases
git tag -a v1.0.0 -m "First stable release"

Semantic Versioning

  • Major: Breaking changes (v2.0.0)
  • Minor: New features (v1.1.0)
  • Patch: Bug fixes (v1.0.1)

Building Community

Community remixes and variations of the NoDrip design

Platforms for Sharing

  1. GitHub/GitLab
    • Version control
    • Issue tracking
    • Discussions
    • Free for open source
  2. Printables/Thingiverse
    • 3D printing focused
    • Built-in makes gallery
    • Comment systems
  3. Hackaday.io
    • Project logs
    • Component lists
    • Build instructions
  4. Forums
    • Reddit (r/3Dprinting, r/Coffee)
    • Discord servers
    • Specialty forums

Engaging Contributors

Welcome Contributions

  • Respond promptly to issues
  • Thank contributors publicly
  • Credit all contributions
  • Maintain friendly tone

Clear Guidelines

## Contributing

We welcome contributions! Please:
1. Fork the repository
2. Create a feature branch
3. Make your changes
4. Submit a pull request

See CONTRIBUTING.md for details.

Managing Feedback

Positive Responses

  • Feature requests → Create issues
  • Success stories → Add to gallery
  • Improvements → Encourage PRs

Constructive Criticism

  • Safety concerns → Address immediately
  • Design flaws → Document and fix
  • Better methods → Learn and adapt

Sustainability

Long-term Maintenance

  1. Set expectations about support
  2. Find co-maintainers for continuity
  3. Document everything thoroughly
  4. Archive properly if discontinuing

Creating Derivatives

Encourage others to: - Fork for specific use cases - Translate documentation - Port to different printers - Adapt for other brewers

Impact Measurement

Success Metrics

  • Download/clone counts
  • Derivative projects
  • Community contributions
  • Real-world usage photos

Gathering Feedback

  • User surveys
  • Coffee quality reports
  • Failure/success stories
  • Suggested improvements

Future Directions

Potential Expansions

  1. Standard-size AeroPress NoDrip (coming next)
  2. Swappable valve experiments (flexible membranes, check-ball inserts)
  3. More JMC coffee upgrades (gaskets, pressure mods, brew-tool experiments)
  4. Different brewing methods (V60, Chemex adaptations)

Technology Evolution

  • Resin printing for precision
  • Multi-material capabilities
  • Automated testing rigs
  • Community design tools

Call to Action

For Users

  1. Download and print the NoDrip XL
  2. Brew, taste, tweak your recipes
  3. Fork the repo and share your remix
  4. Remember attribution & share-alike all the way

For Developers

  1. Fork the repository on GitHub or Printables
  2. Experiment with valve designs and materials
  3. Contribute improvements back to the community
  4. Help expand to other AeroPress models

Conclusion

Open source hardware democratizes innovation. By sharing the JMC cap design, we hope to: - Inspire better coffee brewing - Encourage maker creativity - Build a supportive community - Advance 3D printing applications

Your contributions, no matter how small, make this project better for everyone.


Thank you for joining this journey. May your coffee be excellent and your prints successful!