diff --git a/examples/MQ-6/MQ-6.ino b/examples/MQ-6/MQ-6.ino index aa3d278..250cb33 100644 --- a/examples/MQ-6/MQ-6.ino +++ b/examples/MQ-6/MQ-6.ino @@ -1,5 +1,5 @@ /* - MQUnifiedsensor Library - reading an MQ4 + MQUnifiedsensor Library - reading an MQ6 Demonstrates the use a MQ6 sensor. Library originally added 01 may 2019 @@ -9,6 +9,10 @@ modified 23 May 2019 by Miguel Califa + Updated library usage + modified 26 March 2020 + by Miguel Califa + This example code is in the public domain. */ @@ -17,65 +21,56 @@ #include //Definitions +#define placa "Arduino UNO" +#define Voltage_Resolution 5 #define pin A0 //Analog input 0 of your arduino -#define type 6 //MQ6 +#define type "MQ-6" //MQ6 +#define ADC_Bit_Resolution 10 // For arduino UNO/MEGA/NANO //#define calibration_button 13 //Pin to calibrate your sensor //Declare Sensor -MQUnifiedsensor MQ6(pin, type); - -//Variables -float H2, LPG, CH4, CO, Alcohol; +MQUnifiedsensor MQ6(placa, Voltage_Resolution, ADC_Bit_Resolution, pin, type); void setup() { + //Init the serial port communication - to debug the library Serial.begin(9600); //Init serial port - //init the sensor - /***************************** MQInicializar**************************************** - Input: pin, type - Output: - Remarks: This function create the sensor object. - ************************************************************************************/ - MQ6.inicializar(); - //pinMode(calibration_button, INPUT); + + //Set math model to calculate the PPM concentration and the value of constants + MQ6.setRegressionMethod("Exponential"); //_PPM = a*ratio^b + MQ6.setA(2127.2); MQ6.setB(-2.526); // Configurate the ecuation values to get CH4 concentration + /* + Exponential regression: + GAS | a | b + H2 | 88158 | -3.597 + LPG | 1009.2 | -2.35 + CH4 | 2127.2 | -2.526 + CO | 1000000000000000 | -13.5 + Alcohol | 50000000 | -6.017 + */ + + // Calibration setup + MQ6.setR0(13.4285714); + + /* + //If the RL value is different from 10K please assign your RL value with the following method: + MQ6.setRL(10); + */ + + /***************************** MQ Init ********************************************/ + //Remarks: Configure the pin of arduino as input. + /************************************************************************************/ + MQ6.init(); + /***************************** MQ Init ********************************************/ + //Input: setup flag, if this function are on setup will print the headers (Optional - Default value: False) + //Output: print on serial port the information about sensor and sensor readings + //Remarks: Configure the pin of arduino as input. + /************************************************************************************/ + MQ6.serialDebug(true); } void loop() { - MQ6.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: - MQ6.setRL(10); - */ - /* - //Rutina de calibracion - Uncomment if you need (setup too and header) - if(calibration_button) - { - float R0 = MQ6.calibrate(); - MQ6.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 = MQ6.readSensor("", true); // Return CH4 concentration - // Options, uncomment where you need - H2 = MQ6.readSensor("H2"); // Return H2 concentration - LPG = MQ6.readSensor("LPG"); // Return LPG concentration - CH4 = MQ6.readSensor("CH4"); // Return CH4 concentration - CO = MQ6.readSensor("CO"); // Return CO concentration - Alcohol = MQ6.readSensor("Alcohol"); // Return Alcohol concentration - - Serial.println("***************************"); - Serial.println("Lectures for MQ-6"); - Serial.print("Volt: ");Serial.print(MQ6.getVoltage(false));Serial.println(" V"); - Serial.print("R0: ");Serial.print(MQ6.getR0());Serial.println(" Ohm"); - Serial.print("H2: ");Serial.print(H2,2);Serial.println(" ppm"); - Serial.print("LPG: ");Serial.print(LPG,2);Serial.println(" ppm"); - Serial.print("CH4: ");Serial.print(CH4,2);Serial.println(" ppm"); - Serial.print("CO: ");Serial.print(CO,2);Serial.println(" ppm"); - Serial.print("Alcohol: ");Serial.print(Alcohol,2);Serial.println(" ppm"); - Serial.println("***************************"); -} + MQ6.update(); // Update data, the arduino will be read the voltage on the analog pin + MQ6.readSensor(); // Sensor will read PPM concentration using the model and a and b values setted before or in the setup + MQ6.serialDebug(); // Will print the table on the serial port + delay(500); //Sampling frequency +} \ No newline at end of file