mirror of
https://github.com/miguel5612/MQSensorsLib.git
synced 2025-03-15 13:27:45 +03:00
78 lines
2.5 KiB
C++
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("***************************");
|
|
}
|