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miguel5612 2020-03-26 13:23:05 -05:00
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@ -8,7 +8,17 @@ This is a unified library to use sensors MQ: 2, 3, 4, 5, 6, 7, 8, 9, 131, 135, 3
## Getting Started
```
MQUnifiedsensor MQ4(pin, 4); //Example if sensor is MQ4, type = 4
#define placa "Arduino UNO"
#define Voltage_Resolution 5
#define pin A0 //Analog input 0 of your arduino
#define type "MQ-4" //MQ4
#define ADC_Bit_Resolution 10 // For arduino UNO/MEGA/NANO
MQUnifiedsensor MQ309(placa, Voltage_Resolution, ADC_Bit_Resolution, pin, type); //Example if sensor is MQ4 on Arduino UNO board
MQ4.setRegressionMethod("Exponential"); //_PPM = a*ratio^b
MQ4.setA(1012.7); MQ4.setB(-2.786); // Configurate the ecuation values to get CH4 concentration
MQ4.setR0(3.86018237);
MQ4.init();
MQ4.update();
float ppmCH4 = MQ4.readSensor();
```