Changed variable types
miguel5612
5 years ago
parent
9a1974033e
commit
3d1bb90e38
@ -1,207 +0,0 @@
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/*
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MQUnifiedsensor Library - calibrating an MQ2 to MQ9
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Demonstrates the use a MQ2 sensor.
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Library originally added 01 may 2019
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by Miguel A Califa, Yersson Carrillo, Ghiordy Contreras, Mario Rodriguez
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Added example
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modified 27 May 2019
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by Miguel Califa
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Added LCD
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modified 26 May 2019
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by Miguel Califa
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Changed sample frecuency
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modified 28 May 2019
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by Ghiordy contreras, Miguel Califa
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Added voltaje to log
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modified 29 May 2019
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by Miguel Califa
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This example code is in the public domain.
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*/
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//Include the library
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#include <MQUnifiedsensor.h>
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//And lcd library
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#include <Wire.h>
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#include <LiquidCrystal_I2C.h>
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// Set the LCD address to 0x27 for a 16 chars and 2 line display
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LiquidCrystal_I2C lcd(0x27, 16, 2);
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//Definitions
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#define placa "Arduino Mega 2560"
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#define Voltage_Resolution 5
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#define type "MQ-Board"
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#define ADC_Bit_Resolution 10 // For arduino UNO/MEGA/NANO
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#define pin2 A2 //Analog input 2 of your arduino
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#define pin3 A3 //Analog input 3 of your arduino
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#define pin4 A4 //Analog input 4 of your arduino
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#define pin5 A5 //Analog input 5 of your arduino
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#define pin6 A6 //Analog input 6 of your arduino
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#define pin7 A7 //Analog input 7 of your arduino
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#define pin8 A8 //Analog input 8 of your arduino
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#define pin9 A9 //Analog input 9 of your arduino
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#define RatioMQ2CleanAir 9.83 //RS / R0 = 9.83 ppm
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#define RatioMQ3CleanAir 60 //RS / R0 = 60 ppm
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#define RatioMQ4CleanAir 4.4 //RS / R0 = 4.4 ppm
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#define RatioMQ5CleanAir 6.5 //RS / R0 = 6.5 ppm
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#define RatioMQ6CleanAir 10 //RS / R0 = 10 ppm
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#define RatioMQ7CleanAir 27.5 //RS / R0 = 27.5 ppm
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#define RatioMQ8CleanAir 70 //RS / R0 = 70 ppm
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#define RatioMQ9CleanAir 9.6 //RS / R0 = 9.6 ppm
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#define RatioMQ131CleanAir 15 //RS / R0 = 15 ppm
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#define RatioMQ135CleanAir 3.6//RS / R0 = 3.6 ppm
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#define RatioMQ303CleanAir 1 //RS / R0 = 1 ppm
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#define RatioMQ309CleanAir 11 //RS / R0 = 11 ppm
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#define timeDelay 500
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//Declare Sensor
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MQUnifiedsensor MQ2(placa, Voltage_Resolution, ADC_Bit_Resolution, pin2, type);
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MQUnifiedsensor MQ3(placa, Voltage_Resolution, ADC_Bit_Resolution, pin3, type);
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MQUnifiedsensor MQ4(placa, Voltage_Resolution, ADC_Bit_Resolution, pin4, type);
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MQUnifiedsensor MQ5(placa, Voltage_Resolution, ADC_Bit_Resolution, pin5, type);
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MQUnifiedsensor MQ6(placa, Voltage_Resolution, ADC_Bit_Resolution, pin6, type);
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MQUnifiedsensor MQ7(placa, Voltage_Resolution, ADC_Bit_Resolution, pin7, type);
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MQUnifiedsensor MQ8(placa, Voltage_Resolution, ADC_Bit_Resolution, pin8, type);
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MQUnifiedsensor MQ9(placa, Voltage_Resolution, ADC_Bit_Resolution, pin9, type);
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unsigned long contador = 0;
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unsigned long time = millis();
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void setup() {
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//Init serial port
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Serial.begin(9600);
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// initialize the LCD
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lcd.begin();
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// Turn on the blacklight and print a message.
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lcd.backlight();
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//Welcome message
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lcd.clear();
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lcd.setCursor(0,0);
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lcd.print("MQ2 to MQ9");
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lcd.setCursor(0,1);
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lcd.print(" Calibrating");
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//init the sensor
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MQ2.init();
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MQ2.setRegressionMethod(1); //_PPM = a*ratio^b
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MQ2.setA(574.25); MQ2.setB(-2.222); // Configurate the ecuation values to get LPG concentration
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MQ2.setR0(9.659574468);
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MQ3.init();
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MQ3.setRegressionMethod(1); //_PPM = a*ratio^b
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MQ3.setA(4.8387); MQ3.setB(-2.68); // Configurate the ecuation values to get Benzene concentration
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MQ3.setR0(3.86018237);
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MQ4.init();
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MQ4.setRegressionMethod(1); //_PPM = a*ratio^b
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MQ4.setA(1012.7); MQ4.setB(-2.786); // Configurate the ecuation values to get CH4 concentration
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MQ4.setR0(3.86018237);
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MQ5.init();
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MQ5.setRegressionMethod(1); //_PPM = a*ratio^b
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MQ5.setA(1163.8); MQ5.setB(-3.874); // Configurate the ecuation values to get H2 concentration
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MQ5.setR0(71.100304);
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MQ6.init();
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MQ6.setRegressionMethod(1); //_PPM = a*ratio^b
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MQ6.setA(2127.2); MQ6.setB(-2.526); // Configurate the ecuation values to get CH4 concentration
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MQ6.setR0(13.4285714);
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MQ7.init();
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MQ7.setRegressionMethod(1); //_PPM = a*ratio^b
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MQ7.setA(99.042); MQ7.setB(-1.518); // Configurate the ecuation values to get CO concentration
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MQ7.setR0(4);
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MQ8.init();
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MQ8.setRegressionMethod(1); //_PPM = a*ratio^b
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MQ8.setA(976.97); MQ8.setB(-0.688); // Configurate the ecuation values to get H2 concentration
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MQ8.setR0(1);
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MQ9.init();
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MQ9.setRegressionMethod(1); //_PPM = a*ratio^b
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MQ9.setA(1000.5); MQ9.setB(-2.186); // Configurate the ecuation values to get LPG concentration
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MQ9.setR0(9.42857143);
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//Print in serial monitor
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Serial.println("MQ2 to MQ9 - Calibracion");
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Serial.println("Note - Make sure you are in a clean room and the sensor has pre-heated almost 4 hours");
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Serial.println("Note - All values are in KOhms");
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Serial.println("Autonumeric, MQ2(R0), MQ3(R0), MQ4(R0), MQ5(R0), MQ6(R0), MQ7(R0), MQ8(R0), MQ9(R0), v2(VDC), v3(VDC), v4(VDC), v5(VDC), v6(VDC), v7(VDC), v8(VDC), v9(VDC)");
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//Wait one second to continue
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delay(timeDelay/10);
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}
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void loop() {
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//Update the voltage lectures
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MQ2.update();
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MQ3.update();
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MQ4.update();
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MQ5.update();
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MQ6.update();
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MQ7.update();
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MQ8.update();
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MQ9.update();
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//Read the sensor
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float lecture2 = MQ2.calibrate(RatioMQ2CleanAir);
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float lecture3 = MQ3.calibrate(RatioMQ3CleanAir);
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float lecture4 = MQ4.calibrate(RatioMQ4CleanAir);
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float lecture5 = MQ5.calibrate(RatioMQ5CleanAir);
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float lecture6 = MQ6.calibrate(RatioMQ6CleanAir);
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float lecture7 = MQ7.calibrate(RatioMQ7CleanAir);
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float lecture8 = MQ8.calibrate(RatioMQ8CleanAir);
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float lecture9 = MQ9.calibrate(RatioMQ9CleanAir);
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//Read voltage the sensor
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float v2 = MQ2.getVoltage(false);
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float v3 = MQ3.getVoltage(false);
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float v4 = MQ4.getVoltage(false);
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float v5 = MQ5.getVoltage(false);
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float v6 = MQ6.getVoltage(false);
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float v7 = MQ7.getVoltage(false);
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float v8 = MQ8.getVoltage(false);
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float v9 = MQ9.getVoltage(false);
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//Print in serial monitor
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Serial.print(contador);Serial.print(",");
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Serial.print(lecture2);Serial.print(",");
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Serial.print(lecture3);Serial.print(",");
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Serial.print(lecture4);Serial.print(",");
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Serial.print(lecture5);Serial.print(",");
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Serial.print(lecture6);Serial.print(",");
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Serial.print(lecture7);Serial.print(",");
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Serial.print(lecture8);Serial.print(",");
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Serial.print(lecture9);Serial.print(",");
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//Print voltages
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Serial.print(v2);Serial.print(",");
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Serial.print(v3);Serial.print(",");
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Serial.print(v4);Serial.print(",");
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Serial.print(v5);Serial.print(",");
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Serial.print(v6);Serial.print(",");
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Serial.print(v7);Serial.print(",");
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Serial.print(v8);Serial.print(",");
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Serial.println(v9);
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//Print in LCD
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lcd.clear();
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lcd.setCursor(0,0);
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lcd.print("**CALIBRATING***");
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lcd.setCursor(0,1);
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lcd.print("Time: " + String((millis() - time)/60000) + "min");
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//Increment counter
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contador++;
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//Wait to measure next sample
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delay(timeDelay/4);
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}
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