WattWächter Documentation¶
Welcome to the official documentation of the WattWächter — your IoT energy monitor based on the ESP32-C6.
The WattWächter reads your smart meter via an IR reading head and delivers consumption data in real time — locally on your home network or through our cloud portal.
What can the WattWächter do?¶
- Real-time monitoring — Current power (W) and meter readings (kWh) directly from your smart meter
- History data — 15-minute resolution (15 days) and daily values (1 year)
- Local REST API — Full access to all data on your home network via
ww.local - Cloud portal — Dashboard at login.wattwächter.de with remote access
- MQTT integration — Connect to Home Assistant, ioBroker, and other smart home systems
- OTA updates — Firmware updates automatically via the cloud
- RGB status LED — Device status at a glance
Getting Started¶
- Initial Setup — Connect the device and configure WiFi
- WiFi Configuration — Set up WLAN via app (BLE) or browser (AP mode)
Documentation¶
| Section | Description |
|---|---|
| Device (ESP) | Hardware, LED status, MQTT, technical details |
| API Reference | REST API documentation (OpenAPI/Swagger) |
| OTA Updates | Firmware updates |
| User Portal | Cloud dashboard and settings |