BambuBeacon

BambuBeacon is a compact, ESP32-based status beacon specifically designed for BambuLab 3D printers.
It sits directly on your printer and visualizes its current status using stacked WS2812 RGB LED rings – clear, intuitive and visible from anywhere in the room.

No more constantly checking the slicer or the app: A glance at the beacon reveals exactly what the printer is doing.

✨ What does it do?

BambuBeacon receives the printer's live status updates and translates them into color-coded LED animations:

• 🟢 Print / OK
• 🟠 Heating / Warnings / Paused
• 🔵 Cools / Charges
• 🔴 Errors / Critical Conditions
• 🟣 Wi-Fi is reconnecting
• 🟢✨ Print finishes animation

Each LED ring has a specific task, making the information understandable at a glance – thanks to different movement patterns, even for colorblind users.

💡 Multi-ring concept (2 or 3 rings)

BambuBeacon supports 2 or 3 stacked LED rings (fully configurable in the web interface):

• Upper Ring – Global printer status (OK / Error / Finished)
• Middle Ring – Process states (Heating / Cooling / Paused / Warnings)
• Lower ring – Connectivity & Progress (Wi-Fi / Download / Print Progress)

Ring sequence and number of LEDs per ring are configurable.

🌐 Firmware, Web User Interface & Online Flasher (Local Only)

No apps, no cloud, no accounts. Everything runs locally on the device.

• Online Flasher (recommended): https://softwarecrash.github.io/BambuBeacon/
• Open-source project & documentation: https://github.com/softwarecrash/BambuBeacon

Included features:

• Initial setup of the WLAN (AP mode)
• Configuration of printer IP / USN / access key
• LED brightness & current limiting
• Number of rings + LEDs per ring (1–64)
• Ring order (from top to bottom or vice versa)
• OTA firmware updates
• JSON Backup & Restore
• Live debug logs via WebSerial
• Integrated LED test page: http:// /ledtest

🧰 Construction of the printed parts

Print files are available on MakerWorld: https://makerworld.com/de/models/2163021-bambubeacon-smart-state-light-for-bambu-printers

Assembly:

🚀 Quick Start

1. Flash firmware via the web flasher: https://softwarecrash.github.io/BambuBeacon/
2. Turn on the device and connect it to the Wi-Fi access point. BambuBeacon-xxxxx connect
3. Open the setup in your browser http://192.168.4.1 Access and configure WLAN
4. Then in the browser http://bambubeacon.local (or http:// ) open
5. Go to "Printer setup" and click on "Search for printers". Once the printer is found, click on it, enter its access key, and save.
6. Configure ring number (2/3), LEDs per ring, maximum current, and ring sequence – Save