2019-09-28 11:18:28 -05:00

78 lines
2.5 KiB
C++

/*
MQUnifiedsensor Library - reading an MQ9
Demonstrates the use a MQ9 sensor.
Library originally added 01 may 2019
by Miguel A Califa, Yersson Carrillo, Ghiordy Contreras, Mario Rodriguez
Added example
modified 23 May 2019
by Miguel Califa
This example code is in the public domain.
*/
//Include the library
#include <MQUnifiedsensor.h>
//Definitions
#define pin A0 //Analog input 0 of your arduino
#define type 9 //MQ9
//#define calibration_button 13 //Pin to calibrate your sensor
//Declare Sensor
MQUnifiedsensor MQ9(pin, type);
//Variables
float CO, CH4, LPG;
void setup() {
Serial.begin(9600); //Init serial port
//init the sensor
/***************************** MQInicializar****************************************
Input: pin, type
Output:
Remarks: This function create the sensor object.
************************************************************************************/
MQ9.inicializar();
//pinMode(calibration_button, INPUT);
}
void loop() {
MQ9.update(); // Update data, the arduino will be read the voltaje in the analog pin
/*
//Si el valor de RL es diferente a 10K por favor asigna tu valor de RL con el siguiente metodo:
MQ9.setRL(10);
*/
/*
//Rutina de calibracion - Uncomment if you need (setup too and header)
if(calibration_button)
{
float R0 = MQ9.calibrate();
MQ9.setR0(R0);
}
*/
/***************************** MQReadSensor ****************************************
Input: Gas - Serial print flag
Output: Value in PPM
Remarks: This function use readPPM to read the value in PPM the gas in the air.
************************************************************************************/
//Read the sensor and print in serial port
//Lecture will be saved in lecture variable
//float lecture = MQ9.readSensor("", true); // Return LPG concentration
// Options, uncomment where you need
LPG = MQ9.readSensor("LPG"); // Return LPG concentration
CH4 = MQ9.readSensor("CH4"); // Return CH4 concentration
CO = MQ9.readSensor("CO"); // Return CO concentration
Serial.println("***************************");
Serial.println("Lectures for MQ-9");
Serial.print("Volt: ");Serial.print(MQ9.getVoltage(false));Serial.println(" V");
Serial.print("R0: ");Serial.print(MQ9.getR0());Serial.println(" Ohm");
Serial.print("CO: ");Serial.print(CO,2);Serial.println(" ppm");
Serial.print("LPG: ");Serial.print(LPG,2);Serial.println(" ppm");
Serial.print("CH4: ");Serial.print(CH4,2);Serial.println(" ppm");
Serial.println("***************************");
}