• Homeostasis
  • Pinout of the board
  • Dependencies
  • Configuration
  • Deployment

Homeostasis

Temperature and humidity sensor that communicates via MQTT. The project is implemented using a Wemos D1 mini ESP32 board with a DHT22 shield.

This specific shield needs to have the data line connected to a pin different to D4, as explained in this blog post.

Pinout of the board

Dependencies

• Adafruit DHT sensor library
• Adafruit Unified Sensor Driver
• Async MQTT client
• ArduinoJSON

Configuration

Deployment

The software uses the Arduino framework and the development environment of PlatformIO, which offers better tools than the Arduino IDE.

1. Upload the configuration file to the board:

pio run -t uploadfs

1. Compile the project

pio run -t compile

1. Upload firmware

pio run -t upload