Hi!
I would like to ask any help on how to start doing my project and this is my very first project. My project is Iot based Air Quality Monitoring System Using Arduino Uno.
I would be using Arduino Uno, LCD 16x2, ESP8266-01, MQ-135 there would be also a buzzer for alar
I really dont know what to do first.
I started testing the ESP making the LED blue blinks and turning on the LCD. I also tried the MQ-135 but it says to calibrate first the gas sensor?
And I really dont know how to calibrate the gas sensor.
Can someone help me how to calibrate it?
Thank you in advance