Arduino And MQ 135 Gas Sensor With Arduino Code

In this project, I have measured the components of air.

Mar 16, 2018

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environmental sensing

Devices & Components

Arduino Uno Rev3

USB Cable 2.0 Type A/B for Arduino Uno

Breadboard

Prototype Expansion Board for Arduino Uno

MQ 135 Gas Sensor

Jumper Wires

Project description

Code

Arduino Code

arduino

1#include <LiquidCrystal.h>
2int sensorValue;
3const int rs = 12, en   = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2;
4LiquidCrystal lcd(rs, en, d4, d5, d6, d7);
5void   setup(){  lcd.begin(16, 2);
6Serial.begin(9600);                            //   sets the serial port to 9600
7 }
8void loop(){sensorValue = analogRead(0);       //   read analog input pin 0
9Serial.print("AirQua=");
10Serial.print(sensorValue,   DEC);               // prints the value read
11Serial.println(" PPM");
12lcd.setCursor(0,0);
13lcd.print("ArQ=");
14lcd.print(sensorValue,DEC);
15lcd.print("   PPM");
16lcd.println("       "); 
17lcd.print("  ");
18delay(100);                                   //   wait 100ms for next reading
19}

#include <LiquidCrystal.h>
int sensorValue;
const int rs = 12, en   = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);
void   setup(){  lcd.begin(16, 2);
Serial.begin(9600);                            //   sets the serial port to 9600
 }
void loop(){sensorValue = analogRead(0);       //   read analog input pin 0
Serial.print("AirQua=");
Serial.print(sensorValue,   DEC);               // prints the value read
Serial.println(" PPM");
lcd.setCursor(0,0);
lcd.print("ArQ=");
lcd.print(sensorValue,DEC);
lcd.print("   PPM");
lcd.println("       "); 
lcd.print("  ");
delay(100);                                   //   wait 100ms for next reading
}

Arduino Code

arduino

1#include <LiquidCrystal.h>
2int sensorValue;
3const int rs = 12, en  = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2;
4LiquidCrystal lcd(rs, en, d4, d5, d6, d7);
5void  setup(){  lcd.begin(16, 2);
6Serial.begin(9600);                            //  sets the serial port to 9600
7 }
8void loop(){sensorValue = analogRead(0);       //  read analog input pin 0
9Serial.print("AirQua=");
10Serial.print(sensorValue,  DEC);               // prints the value read
11Serial.println(" PPM");
12lcd.setCursor(0,0);
13lcd.print("ArQ=");
14lcd.print(sensorValue,DEC);
15lcd.print("  PPM");
16lcd.println("       "); 
17lcd.print("  ");
18delay(100);                                   //  wait 100ms for next reading
19}

#include <LiquidCrystal.h>
int sensorValue;
const int rs = 12, en  = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);
void  setup(){  lcd.begin(16, 2);
Serial.begin(9600);                            //  sets the serial port to 9600
 }
void loop(){sensorValue = analogRead(0);       //  read analog input pin 0
Serial.print("AirQua=");
Serial.print(sensorValue,  DEC);               // prints the value read
Serial.println(" PPM");
lcd.setCursor(0,0);
lcd.print("ArQ=");
lcd.print(sensorValue,DEC);
lcd.print("  PPM");
lcd.println("       "); 
lcd.print("  ");
delay(100);                                   //  wait 100ms for next reading
}

Downloadable files

Circuit Diagram

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m_karim02

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