# Jetson Edge Counter (Production)

RTSP + YOLO TensorRT line-crossing counter for edge Jetson. Replaces MQTT `frigate-counter` on site.

## Architecture

- **Input:** Direct LAN camera RTSP (low latency)
- **Inference:** YOLO11n `.engine` (TensorRT) on Jetson GPU
- **Logic:** Line crossing (`ayam` count, `talenan` closes batch) via `batch_store.py`
- **Output:** `jetson_counter.db` + `current_batch.json`
- **Dashboard:** Flask on port **5000**

Batch lifecycle: talenan closes batch → idle until next ayam line cross (count starts at 1).

## Deploy

See **[DEPLOY.md](DEPLOY.md)**.

| Item | Default |
|------|---------|
| Install path | `/opt/jetson-counter` |
| Venv | `/opt/jetson-counter/venv` |
| DB | `/opt/jetson-counter/jetson_counter.db` |
| Dashboard | `http://<jetson-ip>:5000` |
| Cutoff | `20:00` |

## Commands

| Command | Purpose |
|---------|---------|
| `sudo systemctl status jetson-counter` | Counter running? |
| `sudo journalctl -u jetson-counter -f` | Live logs |
| `sudo systemctl restart jetson-counter` | After `.env` change |
| `sudo ./uninstall-services.sh` | Remove services |

## Key env vars

| Variable | Purpose |
|----------|---------|
| `SOURCE` | Direct camera RTSP URL |
| `MODEL_PATH` | `.engine` file path |
| `IMGSZ` / `HALF` | Must match engine export |
| `CROSS_DIRECTION` | `rtl` (default), `ltr`, or `both` |
| `LINE_X` / `LINE_X_FRAC` | Counting line position |

## Files

| File | Purpose |
|------|---------|
| `counter_live.py` | RTSP + YOLO + line crossing |
| `batch_store.py` | SQLite persistence |
| `counter_dashboard.py` | Flask UI |
| `config.env.example` | Env template |
| `jetson-counter.service` | Counter systemd unit |
| `install-services.sh` | Install + disable legacy MQTT counter |

## Dev stack

Lab / comparison: [`jetson-counter-dev/`](../jetson-counter-dev/) (port 8081, separate DB).