Building a rain gauge and using Pulse_counter

ESPHome
1

Good day,

I am new to ESPHome, but not new to programming in C.
I am using ESP8266
3D printed my own rain gauge.

My goal is to see the amount of bucket tips.
I want “hourly Rain Fall”, “Daily Rain Fall” and to add later “yearly rain fall”.
I want to se total rain.

I have this code, but it is getting values I have no idea where it comes from.

Please help. Daily and hourly increases 0.25 per pulse.
I get 0.25, 0.75, 1.25, etc.


time:
  - platform: sntp
    id: my_time
    timezone: SAST-2
    on_time:
      - seconds: 0
        minutes: 0
        hours: /1
        then:
          - sensor.integration.reset: hourly_rain_fall
      - seconds: 0
        minutes: 0
        hours: 0
        then:
          - sensor.integration.reset: daily_rain_fall

binary_sensor:
  - platform: gpio
    name: "Binary Pulse"
    pin: 
      number: GPIO4
      allow_other_uses: true

sensor:
  # Raw Pulse Counter (pulses to mm conversion)
  - platform: pulse_counter
    pin:
      number: GPIO4
      mode:
        input: True
        pullup: True
      allow_other_uses: true
    unit_of_measurement: 'mm'
    name: "Rainfall per Minute"
    icon: 'mdi:weather-rainy'
    id: rainfall_per_minute
    count_mode: 
      falling_edge: INCREMENT
      rising_edge: DISABLE
    internal_filter: 
      microseconds: 50
    update_interval: 60s
    filters:
      - multiply: 0.25
      - debounce: 
          milliseconds: 400
    accuracy_decimals: 2

  # Hourly Pulse Count (in millimeters)
  - platform: integration
    name: "Hourly Rain Fall"
    id: hourly_rain_fall
    time_unit: h  # Use hours for integration
    unit_of_measurement: 'mm'
    sensor: rainfall_per_minute
    accuracy_decimals: 2
#    filters:
#      - multiply: 30.0030  # Multiply the pulse count by the conversion factor (adjust if needed)

  # Daily Pulse Count (in millimeters)
  - platform: integration
    name: "Daily Rain Fall"
    id: daily_rain_fall
    time_unit: h
    unit_of_measurement: 'mm'
    sensor: rainfall_per_minute
    accuracy_decimals: 2
#    filters:
#     - multiply: 30.0030  # Multiply the pulse count by the conversion factor (adjust if needed)```

![Msg|690x75](upload://dMc2sHZQO4OOm7CsPCZrdOHqXZq.png)


In the image "Rain per minute" is correct (0.25mm) for one pulse.
But how is Hourly and Daily calculated? It needs to follow the patten 0.25, 0.5, 0.75, etc.
2

Does it count bucket tipping properly? I’m using pulse counter as a sensor, works pretty well.

3

Yes, I it is a bucket tipping. I use a read switch and magnet to generate the low going pulse.
My problem is in the hourly and daily part. One tip is 0.25 of a mm rainfall, thus 1puls x 0.25 = 0.25mm. But I get stuff like 0.01 or 0.08 etc. It looks like it calculate it with a value other than 1 tip.

image
image860×142 24.5 KB

In the image you see.
1 pulse/min
Rain per Min = 0.25mm (one bucket tip)
Hourly rain = 0.00208 (at this stage it must also be 0.25)
Daily rain = 0.0028 (at this stage it must also be 0.25)