In addition to special add-on radio modules, the "AI-on-the-edge-device" project proves that non-digital water meters can also be read using a camera. In the project, an ESP32 cam is mounted directly above the water meter. The microcontroller periodically takes a photo and recognizes the current meter reading on it using customized text recognition. The meter reading can be recorded on an SD card and displayed via the integrated web interface. In addition, the current meter reading can be transmitted to the smart home via WLAN for better visualization, as an example to Home Assistant.