Rain gauge Zigbee - Pluviometro Zigbee

I created a 3D model of a rain gauge to integrate into Home Assistant using an Aqara Zigbee door and window sensor, similar to what I saw in a YouTube video

Calibration

First, you need to mount the sensor's magnet in position. Then, using a syringe, empty exactly 5ml of water into one tipping bucket. Use the opposite screw to adjust it so that it tips over only with 5ml of water. Afterward, repeat the same procedure for the other tipping bucket. I recommend performing multiple calibration tests to make everything more precise

Formula for calculating mm of rain

The calculation is derived by knowing the area of the cup (A = π x r² = 3.1416 x 2893.44 = 9090.031104) and knowing that one tipping bucket contains 5ml (5ml =  5000mm³) we can find the water column with the formula (V = A x h)

We know h in mm³ (5000mm³) and also the area (9090.031104)

So the formula is: h = V / A= 5000mm³ / 9090.031104= 0.550053

This value represents the mm of rain recorded with each tip of the rain gauge's tipping bucket

At this link, you will find explanations on how to configure it in Home Assistant

https://smartsolutions4home.com/ss4h-zrg-zigbee-rain-gauge/

Packages for Home Assistant

I created this file by including it in packages without creating confusion in the configuration.yaml file. Just include the packages:

homeassistant:
 packages: !include_dir_named packages

and then create a new folder renamed packages

Inside it, create a new file renamed pluviometro.yaml

and inside it insert this code:

sensor:
 - platform: history_stats
   name: "sensore_pioggia_on"
   entity_id: binary_sensor.pluviometro_contact
   state: "on"
   type: count
   start: "{{ now() - timedelta(hours=24) }}"
   end: "{{ now() }}"

 - platform: history_stats
   name: "sensore_pioggia_off"
   entity_id: binary_sensor.pluviometro_contact
   state: "off"
   type: count
   start: "{{ now() - timedelta(hours=24) }}"
   end: "{{ now() }}"

 - platform: template
   sensors:
     sensore_pioggia_aqara:
       friendly_name: "Aqara Rain Sensor"
       unit_of_measurement: "mm"
       value_template: >
         {% set count_on = states('sensor.sensore_pioggia_on') | int(0) %}
         {% set count_off = states('sensor.sensore_pioggia_off') | int(0) %}
         {% set count = count_on + count_off - 1 %}
         {% set mm = count * 0.550053 %}
         {{ mm | round(1, 'floor') }}

Update

I modified the operating logic of the rain gauge so that at the end of the day, it automatically resets at midnight every day, and with a monthly graph, I see the daily values read. If desired, you can modify the data duration of the graphic card by changing hours_to_show: 744 which corresponds to 31 days

This is the new Packages and graphic card

Packages

automation:
 - alias: Reset rain count at midnight
   trigger:
     platform: time
     at: "00:00:00"
   action:
     - service: input_number.set_value
       target:
         entity_id: input_number.contatore_pioggia_on
       data:
         value: 0
     - service: input_number.set_value
       target:
         entity_id: input_number.contatore_pioggia_off
       data:
         value: 0

input_number:
 contatore_pioggia_on:
   name: Rain Counter On
   initial: 0
   min: 0
   max: 1000
   step: 1
 contatore_pioggia_off:
   name: Rain Counter Off
   initial: 0
   min: 0
   max: 1000
   step: 1

sensor:
 - platform: history_stats
   name: "Rain Sensor On"
   entity_id: binary_sensor.pluviometro_contact
   state: "on"
   type: count
   start: "{{ now().replace(hour=0, minute=0, second=0, microsecond=0) }}"
   end: "{{ now() }}"

 - platform: history_stats
   name: "Rain Sensor Off"
   entity_id: binary_sensor.pluviometro_contact
   state: "off"
   type: count
   start: "{{ now().replace(hour=0, minute=0, second=0, microsecond=0) }}"
   end: "{{ now() }}"

 - platform: template
   sensors:
     sensore_pioggia_aqara:
       friendly_name: "Aqara Rain Sensor"
       unit_of_measurement: "mm"
       value_template: >
         {% set count_on = states('sensor.sensore_pioggia_on') | int(0) %}
         {% set count_off = states('sensor.sensore_pioggia_off') | int(0) %}
         {% set count = count_on + count_off - 1 %}
         {% set mm = count * 0.550053 %}
         {{ mm | round(1, 'floor') }}

Mini graph card

type: custom:mini-graph-card
icon: mdi:weather-rainy
name: Precipitation
aggregate_func: max
hours_to_show: 744
group_by: date
show:
 graph: bar
 fill: true
 icon: false
color_thresholds:
 - value: 12
   color: "#030ffc"
 - value: 7
   color: "#353ffc"
 - value: 5
   color: "#656dfc"
 - value: 3
   color: "#979dfc"
 - value: 1
   color: "#afb3fa"
 - value: 0
   color: "#ffffff"
entities:
 - entity: sensor.sensore_pioggia_aqara_2
   state_adaptive_color: false

Hovering over it, you can read the graph data

I currently printed it in Polymaker white PLA to check if everything is okay. I plan to re-print the top cover and the grid in white ASA later, as they will be exposed to the elements all year round

The base is printed with 30% infill and 3 wall loops to give it overall robustness, while the rest only requires 15% infill and 2 wall loops. The only supports used are to support the parts that create the interlocking closure between the base and the top cover

Free Project:

This is a completely free project, but if you feel the need to support me, you can offer me any amount you wish. Thank you 

Update

As requested, I have added a new lid for the new Aqara T1 sensor, which is slightly thicker

Everything remains compatible with the rest without modifications to the remaining parts