Reading Hydrodigit-S1 water meter with iM871A-USB and wmbusmeters to Home Asisstant sensor

readme.md

Reading Hydrodigit-S1 water meter with iM871A-USB and wmbusmeters to Home Asisstant sensor

Software https://github.com/weetmuts/wmbusmeters

Hardware

• Meter https://www.bmeters.com/en/products/hydrodigit-s1/
  • manual https://www.bmeters.com/wp-content/uploads/2021/05/HYDRODIGIT-S1_User-Manual_v1.4.5_ENG.pdf
• Wireless M-Bus USB adapter https://wireless-solutions.de/products/m-bus/im871a-usb/
  • Shop https://www.tekmodul.de/produkt/im871a-usb-drahtloser-m-bus-adapter/
• Raspberry Pi 3

ColdWater

# /etc/wmbusmeters.d/ColdWater 
name=ColdWater

# the id printed on the meter
id=030xxxxx

key=NOKEY
driver=hydrodigit

configuration.yml

# The Home Assistant /config/configuration.yaml

template:
  - trigger:
      - platform: webhook
        webhook_id: water-030xxxxx-secret
    sensor:
      - name: "Water Warm"
        state: "{{ trigger.json.total_m3 }}"
        unit_of_measurement: "m³"
        device_class: water
        state_class: total
  - trigger:
      - platform: webhook
        webhook_id: water-030xxxxx-secret
    sensor:
      - name: "Water Cold"
        state: "{{ trigger.json.total_m3 }}"
        unit_of_measurement: "m³"
        device_class: water
        state_class: total

WarmWater

# /etc/wmbusmeters.d/WarmWater 
name=WarmWater

# the id printed on the meter
id=030xxxxx

key=NOKEY
driver=hydrodigit

wmbusmeters.conf

# /etc/wmbusmeters.conf 
loglevel=verbose
device=/dev/ttyUSB0:im871a:t1
logtelegrams=true
format=json
meterfiles=/var/lib/wmbusmeters/meter_readings
meterfilesaction=overwrite
logfile=/var/log/wmbusmeters/wmbusmeters.log
donotprobe=/dev/ttyAMA0
shell=/usr/bin/curl --fail -H "content-type: application/json" -d "$METER_JSON"  http://homeassistant.local:8123/api/webhook/water-$METER_ID-secret