Precise Air Quality Monitoring System (Portable)

In this Instructable, I will walk you through the steps to build an Precise Air Quality monitoring system. It consists of an Arduino R3, 2 Grove sensors along with 2 other MQ gas sensors to keep the data in check, a LED display and a Temperature/Humidity sensor DHT11.Arduino Uno takes data from the sensors and does the calculations so you can see real time values of the data.”

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