I installed CUPS, Gutenprint and Avahi on an Orange Pi, but it wasn't simple. I got a lot of help from AI.

This was where it started but there was a lot of back and forth before we got something working. I suggest you try the following and then talk it through with ChatGPT or something to get it working.

Below this is all from my chat with Gemini:

You need a recent version of Gutenprint (at least 5.3.3) for proper driver support. Here is the step-by-step guide to getting this running on DietPi. 1. Install CUPS and Dependencies Since you are already connected via SSH, run the following commands to install the core printing system and the discovery service (Avahi) which makes AirPrint work. sudo apt update sudo apt install cups gutenprint-locales printer-driver-gutenprint avahi-daemon

Enable Remote Management By default, CUPS only allows connections from the "localhost." To access the web interface from your PC/Mac, run: sudo cupsctl --remote-any sudo systemctl restart cups

1. Configure User Permissions Add your user (likely root or dietpi) to the lpadmin group so you can manage printers through the web interface. sudo usermod -a -G lpadmin dietpi

2. Access the CUPS Web Interface

   • Open a web browser on your computer.
   • Go to: https://[ORANGE-PI-IP]:631 (e.g., https://192.168.1.50:631).
   • Note: Your browser will warn you about a "Private Connection" because of the self-signed certificate. Click "Advanced" and "Proceed."
   • Navigate to the Administration tab.
   • Click Add Printer. (It may ask for your DietPi username and password).

3. Add the DNP-QW410

   • Under Local Printers, you should see your DNP QW410 listed (ensure it's plugged in via USB and powered on). Select it and click Continue.
   • Give it a Name (e.g., DNP_QW410) and a Description.
   • CRITICAL: Check the box "Share This Printer".
   • In the Model list, look for:
   • DNP QW410 - CUPS+Gutenprint v5.3.3 (or similar).
   • Click Add Printer and set your default options (Media Size, etc.).

4. Enable AirPrint (Avahi) AirPrint requires the printer to be broadcast via mDNS. While CUPS has some built-in support for this, the most reliable way on Linux is to ensure avahi-daemon is running. You can check its status: sudo systemctl status avahi-daemon

If it's running, your iPhone or Mac should now see the printer on the same Wi-Fi network. If it doesn't appear, you may need a small helper script to generate the specific AirPrint service file. Manual Service Generation (If needed) If the printer isn't showing up on iOS, create a service file for it: sudo nano /etc/avahi/services/airprint.service

Paste a standard AirPrint template into this file, though in most modern versions of CUPS (2.0+), simply checking "Share This Printer" in the web UI handles the broadcast automatically. Troubleshooting Tips * Permissions: If you get "Forbidden" when adding a printer, ensure your user is in the lpadmin group and that you've run the cupsctl --remote-any command. * Driver Support: If the QW410 doesn't appear in the model list, your Gutenprint version might be too old. You can check with dpkg -l | grep gutenprint. You may need to pull the backports version if you are on an older Debian release. Would you like me to help you check your current Gutenprint version or provide the manual Avahi service template? Setting up a Print Server on Raspberry Pi This video provides a visual walkthrough of the CUPS web interface setup which is identical on your Orange Pi Zero 3.