The code reads the sensor value periodically, converts it to a percent (assuming the input is 0V..5V) and displays it. Normally these things should get through a calibration phase, but it's easier to ...
//Include the library #include <MQUnifiedsensor.h> /*****Hardware Related Macros*****/ #define Board ("Arduino UNO") #define Pin (A4) //Analog input 4 of your arduino ...
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