{
  "id": 19626228,
  "title": "Set up F1 print-status lights on a Klipper printer in 30 minutes",
  "url": "https://urgent.news/2026/11/12/set-up-f1-print-status-lights-on-a-klipper-printer-in-30-minutes",
  "topic": "tech",
  "section": "Tech",
  "published": "2026-11-12T09:00:16.000Z",
  "source": {
    "name": "Dev.to",
    "slug": "dev-to",
    "url": "https://dev.to/iam-tech/set-up-f1-print-status-lights-on-a-klipper-printer-in-30-minutes-mpm"
  },
  "original_language": "en",
  "account": "The Voron printer features an LED strip that changes colour based on the print status. Blue indicates idle, orange signifies heating, white denotes printing, green represents a completed print with a chequered flag, and red signals any errors. This functionality is provided by the WLED_Voron-F1-Lights system, which includes a setup guide that undergoes weekly checks by GitHub. While not directly testing Klipper, the guide focuses on correcting common mistakes, such as verifying the existence of all eight LED_* macros and ensuring they fall within the appropriate range. The guide also covers the optional print macros, which only reference existing macros, and ensures each macro has valid JSON data with the correct colour, brightness, and effect. A non-switched off strip is essential for successful printing, as the script will abort within three seconds if the strip is off. The guide specifically outlines the necessary adjustments to three lines of code to ensure proper colour mapping, particularly addressing the GRB colour order mismatch that can lead to incorrect colour representation during heating and error states. To set up the system, one must flash WLED, install gcode_shell_command, copy the provided script and wled.cfg file, update the nine IP addresses, include the wled.cfg file, restart the printer, and then input LED_IDLE in the console. Detailed instructions, including troubleshooting tips and personal experiences, are available in the documentation at docs/SETUP.md. The author, who has contributed to the Gliptopolis/WLED_Klipper project and adapted it for their Voron 2 printer, invites readers to share their preferred colour schemes for failed prints, whether opting for red or a more dramatic alternative.",
  "summary": "My Voron's LED strip changes colour with the print: blue when idle, orange heating, white printing, green chequered flag when it's done, red for errors. It's WLED_Voron--F1-Lights , and it now has a setup guide that GitHub checks every week. What a printer repo can test with no printer Not Klipper itself. But it can check the bits people actually get wrong: all eight LED_* macros exist and every…",
  "key_points": [
    "Voron printer features LED strip indicating print status",
    "WLEDVoron-F1-Lights system includes setup guide",
    "Adjust three lines of code for correct colour mapping"
  ],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}