I bought a Slimme Lezer for integrating my Dutch power meter into Home Assistant, which has been working flawlessly.
However, with the recent Home Assistant upgrades we now get to integrate water consumption in the Energy dashboard as well, so I wanted to do it. I went for the DIY route, and bought an inductive sensor to read the small needle in the meter, and was using an ESPHome Wemos D1 Mini as the sensor reader.
Since the Slimme Lezer can also be used with ESPHome, I took the liberty of writing (and sharing back with the community) a configuration file that merged both the DSMR and water meter sensor configurations, so that we can use the same device for both integrations. I removed unused sensors from my DSMR configuration since my meter does not support some of the stuff found in the original Slimme Lezer sensor set.
The sensor cables were soldered by me directly into the ESP-12F module’s GPIOs 12 and 14, and power was connected to a 5V rail inside the Lezer.
I created a GitHub Gist with the file I used: Slimme Lezer + Water Meter reader joint ESPHome configuration. · GitHub
Hope this can be useful to other people 