Sense Your Surroundings: Easy DIY Weather Station !

A DIY Weather Station from Timothy Mwala on Hackster.io:

The AHT20 sensor delivers precise temperature and humidity readings, while the BMP280 adds temperature, barometric pressure, and altitude data. The Carenuity C3 Mini ties it all together, updating the OLED display every 5 seconds with readings from both sensors. With its straightforward I2C connections and ready-to-use code, this project is perfect for quick assembly and experimentation.

Why It Works

Since the AHT20, BMP280, and OLED all use the I2C protocol, the triple adapter acts as a hub, linking them to the C3 Mini without additional wiring. This not only speeds up assembly but also reduces the chance of wiring mistakes.

Software Requirements

To program and run this project, you’ll need the following tools and libraries:

• Arduino IDE: The environment for coding and uploading to the C3 Mini.
• BMP280_DEV library: Enables communication with the BMP280 sensor.
• AHT20 library: Facilitates reading data from the AHT20 sensor.
• Adafruit_GFX library: Provides graphics support for the OLED display.
• Adafruit_SSD1306 library: Controls the OLED display hardware.
• FreeSans9pt7b font: A custom font included with Adafruit_GFX for better text rendering.

Learn more!

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Modern Replacements for DHT11 and DHT22 Sensors

When it came to measuring humidity, the DHT11 and DHT22 sensors dominated the market. These were super cheap, readily available, and had ready-to-go Arduino libraries. Tons of guides were published using these sensors as demos.

Fast forward to now. The microcontroller market has evolved significantly.

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