Beginners Corner
Nov 11, 2026
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14 min read
Build an IoT Air Quality Monitor with MQ135, DHT22, OLED & ESP8266 – Real-Time AQI Dashboard
Build a real-time IoT air quality monitor using MQ135, DHT22, OLED display & NodeMCU ESP8266. View AQI, temperature & humidity on web dashboard. Full guide & BOM!
By Anil Gupta
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