DIY Weather Station: Build Your Own with Arduino

11.12.2024 - Engine: Gemini

DIY Weather Station Guide

Materials Required:

• Arduino board (e.g., Arduino Uno)
• DHT22 temperature and humidity sensor
• BMP180 barometer sensor
• Anemometer (optional)
• Rain sensor (optional)
• Wi-Fi module (e.g., ESP8266)
• MQTT broker (e.g., Mosquitto)
• MQTT dashboard (e.g., Node-RED)

Step 1: Connect Sensors

• Connect DHT22 sensor to GPIO pins 2 (data), 3 (power), and GND.
• Connect BMP180 sensor to GPIO pins 4 (SCL), 5 (SDA), and GND.
• Optionally, connect anemometer to an analog input (e.g., A0).
• Optionally, connect rain sensor to a digital input (e.g., D2).

Step 2: Set Up Wi-Fi Module

• Connect Wi-Fi module to the Arduino board as per manufacturer instructions.
• Configure the Wi-Fi module with your network's SSID and password.

Step 3: Configure MQTT Broker

• Install an MQTT broker such as Mosquitto on your home server or an online service.
• Configure the broker with your desired settings.

Step 4: Create MQTT Dashboard

• Use an MQTT dashboard like Node-RED to create a dashboard that visualizes weather data.
• Configure the dashboard to connect to the MQTT broker and subscribe to weather data topics.

Step 5: Write Arduino Code

• Use the following Arduino libraries for sensors:
  • DHT
  • Adafruit_BMP085
• Write Arduino code that:
  • Reads sensors
  • Publishes weather data to an MQTT topic
  • Reconnects to MQTT broker on connection failures
• Upload the code to the Arduino board.

Step 6: Configure Dashboard

• Add widgets to the dashboard to display temperature, humidity, atmospheric pressure, and other weather data.
• Configure the widgets to fetch data from the MQTT topics.

Result:

You now have a fully functional DIY weather station that collects weather data and sends it to a dashboard via MQTT. You can use this data to monitor weather changes, make forecasts, or simply check the current weather.