ESP32 application that connects to Wifi and reports sensor values from Simarine devices to an MQTT broker to the topic /sensors/all as a list of JSON objects. For example:

[
  {
    "sensor_id": 26,
    "value": 0.995
  },
  {
    "sensor_id": 27,
    "value": -0.471793
  }
]

I use this application to report my vans battery state to an AWS Timestream table so I can monitor it remotely on a Grafana dashboard.

• Wifi Router
• Simarine Pico in STA Wifi mode connected to the Wifi Router
• ESP32 (tested with Espressif ESP32 DevKitC V4)
• ESP IDF (tested with version 5.2 and 5.3)

Create a main/Config.hpp based on main/Config.example.hpp

Build using idf.py build and follow the instructions to flash and use the app.