Water Meter

Water meter device for Home Assistant

⚠️ WARNING
Any reliance you place on this guide is strictly at your own risk.

REQUIREMENTS

• Water Flow Sensor
• Wemos D1 Mini Pro or ESP8266

SOFTWARE INSTRUCTION

FLASHING YOUR WEMOS D1

1. Flash your Wemos D1 Mini Pro or ESP8266 with Tasmota. For more instruction follow this link
2. Open the already downloaded files and navigate to ..\Tasmota-X.XX.XX\tasmota open the project in Arduino IDE and then Edit the my_user_config.h with your Wifi value, you can also add your MQTT server info otherwise you can add them later and finally Upload it to your Wemos D1 Mini Pro / ESP8266

CONFIGURING TASMOTA

1. Go to your browser and enter the Wemos D1 Mini Pro / ESP8266.
2. Then go to Configuration-->Configure MQTTand add your MQTT server info.
3. Go to Configure Module --> Module Type Generic (18) --> D2 GPIO4 COUNTER1. configure_module
4. (optional) Configure your device name and friendly name navigating to Configuration-->Configure Other

HARDWARE INSTRUCTION

Plug the water sensor to Wemos D1 mini pro: Wemos pin out

Wemos d1 mini pro	Water sensor flow
Pin: 5v	Red wire (+5v)
Pin: GND	Black wire (ground)
Pin: D2	Yellow wire (data)

HOME ASSISTANT INSTRUCTIONS

Assuming that you already have a MQTT server such as Mosquitto.

Enable MQTT and MQTT Discovery More Info.

In your Home Assistant navigate to Configuration-->Integrations-->MQTT select the device, then MQTT Info and take note of the Sensor info inside Entities --> Subscribed topics --> tele/YOUR-DEVICE-NAME_ClientID/SENSOR

Ex.: tele/watersoleil_636D34/SENSOR.

Now in your sensor.yaml enter your already copied sensor info and replace with your values.

NOTE : you must calibrate your sensor by using measuring jar, take note of how many pulses is 1 Liter and divide it by the pulses. In my case: Ex.: 1 Liter/607 (pulses)=0.001648

     - platform: mqtt
     state_topic: "tele/YOUR-DEVICE-NAME_ClientID/SENSOR"
     name: "MQTT Sensor Water"
     value_template: "{{ ( value_json['COUNTER'].C1 | multiply(0.001648) | float ) | round(2) }}"
     unit_of_measurement: "l"

Finally you should have a sensor called sensor.mqtt_sensor_water and with help of utility meter you would be able to measure how many water you cosume daily and monthly.