ha-water-tank-sensor

Stores the code and schematics for the system we use to monitor the level in the water tanks on our property.

Consists of a IoT device that measures the water level in the tank and sends it to the service using WIFI. The service extracts the data from the message and sends it to a Grafana stack.

• Schema -> KiCad
• PCB -> KiCad (not done)

The embedded device

Hardware

• ESP32-C6 DevKit
• Submerged pressure sensor
• BME280 for temperature and humidity
• Light sensitive diode - To check that the enclosure is still sealed
• Solar panel
• Battery (1.3 Ah)
• ADS1115 - To read the analog values from the pressure sensor
• TSR_1-2450 - To regulate the voltage from the battery to the ESP32. Generating 5V for the devkit
• SDLA12TA - Solar charge module
• EC2-3NU - Relay to turn on/off the sensor
• XL6009E1 - DC-DC converter to generate 24V for the pressure sensor
• BS170 - N-channel MOSFET to turn on/off the relay

Pin assignments

• ESP32-C6 DevKit
  • 5V - TSR_1-2450
  • 3V3 - BME280, ADS1115, Light sensitive diode
  • GND - BME280, ADS1115, Light sensitive diode
  • SDA - BME280, ADS1115,
  • SCL - BME280, ADS1115,
  • GPIO 10 - SDA (ADS1115, BME280)
  • GPIO 11 - SCL (ADS1115, BME280)
  • GPIO 18 - Boost enable (BS170)
• ADS1115
  • GND - ESP32
  • VDD - ESP32
  • SDA - ESP32
  • SCL - ESP32
  • ALERT - Not connected
  • A0 - Light sensitive diode
  • A1 - Pressure sensor
  • A2 - Not connected
  • A3 - Battery sensor
• BME280

Software

The service

Communication

• Message format
• connectivity