Morse Camera Decoder ITU-R M.1677-1 · standards-compliant decoding

1. Click "Start camera" and allow camera access.
2. Aim the camera so the Cardputer LCD fills the yellow ROI box.
3. On the Cardputer, type a message and press Enter.
4. The decoder auto-calibrates the unit time from the first few pulses.

Page must be served from https:// or localhost (camera permission rule).
Quick test:  python3 -m http.server 8000   →   http://localhost:8000/decoder.html