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Netlify Deployment Steps

Your Repository

✅ GitHub: https://github.com/YOUR_USERNAME/ticket-printer-app

Deployment Settings

Site name: (choose any name, e.g., ticket-printer-app)

Build settings:

  • Base directory: (leave blank)
  • Build command: echo "No build required"
  • Publish directory: frontend

Environment variables: (optional for now)

  • Can add later if needed

After Deployment

Your Netlify site will be live at: https://YOUR-SITE-NAME.netlify.app

Make Sure These Are Running

1. Raspberry Pi - ngrok Tunnel

The ngrok tunnel must be running on your Raspberry Pi:

# Should show the tunnel is active
ngrok http 5000

Your URL: https://your-ngrok-url.ngrok-free.dev

  • Replace with your actual ngrok URL

2. Raspberry Pi - Flask Backend

Your Flask app should be running:

python3 app.py

Or if you've set it up as a service:

sudo systemctl status ticket-printer

3. Test the Connection

Once deployed to Netlify:

  1. Visit your Netlify URL
  2. Fill out the form
  3. Submit a ticket
  4. Check your Raspberry Pi printer - it should print!

Verify Backend is Working

Test your backend API directly:

curl https://your-ngrok-url.ngrok-free.dev/health
  • Replace with your actual ngrok URL

Should return:

{"status": "healthy", "printer_connected": true}

Troubleshooting

Frontend can't reach backend

  • Check ngrok is running: ngrok http 5000
  • Verify API URL in frontend/index.html (line 196)
  • Check CORS is enabled in app.py

Backend not responding

  • Check Flask app is running: python3 app.py
  • Verify printer is connected: sudo lsusb
  • Check permissions: sudo usermod -a -G lp,dialout pi

Can't deploy to Netlify

  • Make sure you're deploying the frontend/ folder
  • Check build settings match the instructions
  • Review Netlify deploy logs for errors