Regenmenge messen mit Zigbee – DIY

				
					# 1. Zählt die "Flips" des Regensensors seit Mitternacht
sensor:
  - platform: history_stats
    name: Rainsensor Flips Today
    entity_id: binary_sensor.regensensor_opening
    state: 'off'
    type: count
    start: "{{ as_timestamp(now().replace(hour=0, minute=0, second=0, microsecond=0)) }}"
    end: "{{ as_timestamp(now()) }}"
    unique_id: rainsensor_flips_today

# 2. Berechnet die tägliche Regenmenge und die Intensität
template:
  - sensor:
      # Sensor für täglichen Regen
      - name: Rainfall today
        unique_id: rainfall_today
        unit_of_measurement: 'mm'
        state_class: total_increasing
        state: >-
          {% set count = states('sensor.rainsensor_flips_today') | int(0) %}
          {% set mm_per_flip = 0.30303 %}
          {{ (count * mm_per_flip) | round(1, 'floor') }}
        availability: >-
          {{ states('sensor.rainsensor_flips_today') not in ['unknown', 'unavailable'] }}

      # 2b. Aktuelle Regenintensität in mm/h
      - name: "Rain intensity"
        unique_id: rainfall_per_hour
        unit_of_measurement: 'mm/h'
        state_class: measurement
        state: >-
          {% set gradient = state_attr('binary_sensor.rainfall_trend', 'gradient') | float(0) %}
          {% set rain_hour = (gradient * 3600) | round(1, 'floor') %}
          {% if rain_hour >= 0 %}
            {{ rain_hour }}
          {% else %}
            {{ 0 }}
          {% endif %}
        availability: >-
          {{ state_attr('binary_sensor.rainfall_trend', 'gradient') is not none }}

# 3. Trend-Sensor zur Berechnung der Änderungsrate der täglichen Regenmenge
binary_sensor:
  - platform: trend
    sensors:
      rainfall_trend:
        entity_id: sensor.rainfall_today
        max_samples: 4

# 4. Zähler für wöchentliche, monatliche und jährliche Regenmengen
utility_meter:
  rain_week:
    source: sensor.rainfall_today
    cycle: weekly

  rain_month:
    source: sensor.rainfall_today
    cycle: monthly

  rain_year:
    source: sensor.rainfall_today
    cycle: yearly