Design of an Air Quality Analyzer Based on Arduino Platform

In order to better popularize air quality detection equipment, awaken people’s attention to air quality, and provide convenient experimental teaching resources for Arduino related courses, this project has developed a small, light weight, easy-to-use protable air quality analyzer based on Arduino UNO and related inexpensive sensors. This air quality analyzer integrated the measurement of two gases, carbon dioxide (CO₂) and total volatile organic compounds (TVOC), with more accurate measurement. The instrument is mainly composed of hardware modules such as Arduino UNO board, ESP8266 NodeMCU board, SGP30 sensor, OLED screen and power supply. First, the sensor transmits the gas concentration data in the air to the Arduino board, and then uses the communication protocol to transmit the data to the Esp8266 Wi-Fi module, and uses the Blinker to connect, which realizes the real-time monitoring of air quality with the OLED screen and the mobile phone, and the mobile phone vibrates when the threshold value exceeds. Finally, all the codes and materials will be published on the website, which promotes the development of experimental teaching.