Monitor your water usage through an energy-efficient IoT device attached to your water provider meter (which happens to have a metal "butterfly wheel) like the JANZ JT400:
This project enables you to monitor the water usage of your household water usage through the use of a DIY water meter sensor built using:
- Raspberry Pi Pico W
- Inductive Proximity Sensor Detection Switch - TL-W5MC1
- TI High-Speed CMOS Logic 14-Stage Binary Counter
The RPI Pico W is very flexible in terms of power requirements, but in my case, I use:
- 18650 Battery
- 18650 TP4056 Lithium Battery Charger Module With Protection
- Mini Boost Module Step Up Board 5V (to power the Inductive Proximity Sensor which states minimum 6V but actually works with 5V)
Just assemble everything :)
You can find the PCB source files (KiCAD) in the respective directory. (PCB files)
I designed a 3D-printed adapter for the Inductive Proximity Sensor to fit the JANZ JT400. (3Dadapter)
The RPi Pico W is flashed with a micropython firmware and then you upload the project available in src
You must have an MQTT broker (e.g. Mosquitto)
The project automatically integrates with Home Assistant
You will need to create an additional file called config.py that must include the variables:
SSID = "myhome_network"
WIFI_PASSWORD = "blablabla"
SERVER = "192.168.1.1" #this is your MQTT Broker Address
USER = None #change this to your MQTT username, else leave None
PASSWORD = None #change this to your MQTT password, else leave None- Using a 18650 3.7v battery the sensor can run for 2 weeks
- Using a battery pack of 4 AA batteries the sensor can run for 4 weeks