/Solar-Inverter-Monitor

Primary LanguageC++MIT LicenseMIT

Solar Inverter Monitor

This project is a simple monitoring system for solar panels. It uses an ESP8266 microcontroller to read data from the INA226 current and voltage sensor and LED output of solar inverter board. The data is then sent to the Home Assistant using MQTT.
The project was created in PlatformIO 15.05.2023

ESP8266
Build with PlatformIO
License: MIT


Build and settings

  1. Install (if you haven't already) PlatformIO extension for VS Code.
  2. Create a copy of platformio_override.ini.example and rename it to platformio_override.ini.
  3. Set your own values in platformio_override.ini.
  4. Update hardware and other settings in lib/defs/def.h file if needed.
  5. Build and upload the project to your ESP8266 device using PlatformIO.

Home Assistant YAML configuration

sensor:
  - name: "Solar Panel Voltage"
    device_class: voltage
    state_topic: "/solar-inverter-monitor/state/volt"
    value_template: "{{ value | default(0) }}"
    unit_of_measurement: "V"
    state_class: measurement

  - name: "Solar Panel Current"
    device_class: current
    state_topic: "/solar-inverter-monitor/state/amp"
    value_template: "{{ value | default(0) }}"
    unit_of_measurement: "A"
    state_class: measurement

  - name: "Solar Panel Power"
    device_class: power
    state_topic: "/solar-inverter-monitor/state/watt"
    value_template: "{{ value | default(0) }}"
    unit_of_measurement: "W"
    state_class: measurement

  - name: "Solar Panel Energy"
    device_class: energy
    state_topic: "/solar-inverter-monitor/state/wh"
    value_template: "{{ value | default(0) }}"
    unit_of_measurement: "Wh"
    state_class: total_increasing

  - name: "Solar Panel Inverter Temperature"
    device_class: temperature
    state_topic: "/solar-inverter-monitor/state/temp"
    value_template: "{{ value | default(0) }}"
    unit_of_measurement: "°C"
    state_class: measurement

  - name: "Solar Panel State"
    state_topic: "/solar-inverter-monitor/state/mppt"
    value_template: "{{ value }}"

  - name: "Solar Panel Error"
    state_topic: "/solar-inverter-monitor/state/error"
    value_template: "{{ value }}"

  - name: "Solar Panel Signal Strength"
    state_topic: "/solar-inverter-monitor/state/signal-quality"
    value_template: "{{ value }}"
    unit_of_measurement: "%"

  - name: "Solar Panel Uptime"
    state_topic: "/solar-inverter-monitor/state/uptime"
    value_template: "{{ value | default(0) }}"
    state_class: total_increasing
    device_class: duration
    unit_of_measurement: s

button:
  - name: "Solar Inverter Monitor Reset"
    command_topic: "/solar-inverter-monitor/set/reset"
    payload_press: "1"
    entity_category: "config"
    device_class: "restart"
  - name: "Solar Inverter Monitor Reset Wh"
    command_topic: "/solar-inverter-monitor/set/wh-reset"
    payload_press: "1"
    entity_category: "config"

Dependencies

All dependencies will be automatically installed by PlatformIO

Copyright

Copyright (c) 2024 Sen Morgan. Licensed under the MIT license, see LICENSE.md