Print Status & Progress Bar ESP32 + WS2812 For Bambu Lab Printers

A compact print progress bar and integrated purge-line holder for 3D printers.
Real-time visual feedback (download, preheat, printing, errors) powered by an ESP32 and a WS2812 LED strip. Single-piece print — optimized for speed and material efficiency.

Key features

• Visual states: download, nozzle heating, print progress, error alerts
• Integrated purge line holder to keep prints tidy
• Single ESP32, short WS2812 strip
• USB powered from rear printer USB
• Prints diagonally in one go with provided optimized print profile
• Open-source — contributions welcome

Repo layout

See the project tree in the repository root for firmware, hardware files, print profiles, and docs.

Quick start

1. Print the STL from Hardware/STL/PrintStatusBar_with_PurgeHolder.stl using Print_Profiles/optimized_profile.3mf.
2. Insert WS2812 LED strip into the channel.
3. Put Firmware/src/config.h.example → config.h, set Wi-Fi & pin settings.
4. Flash Firmware/src/PrintStatusBar.ino to an ESP32 (Arduino IDE / PlatformIO).
5. Power ESP32 from your printer USB and route the LED wires through the top hole.

License

MIT — see LICENSE

Contributing

Read CONTRIBUTING.md. Issues and PRs welcome.