Project

1.Tempratcher sensor (DTH11)

project Description: This project can check Tempratcher and Humidity.

                                                  What is Humidity

Circuit 

Code

 #include <SimpleDHT.h>  
 SimpleDHT11 dth;  
 // for DHT11,   
 //   VCC: 5V or 3V  
 //   GND: GND  
 //   DATA: 2  
 int pinDHT11 = 2;  
 void setup() {  
  Serial.begin(9600);  
  Serial.println("Temperature and Humidity");  
 }  
 void loop() {  
  byte temperature = 0;  
  byte humidity = 0;  
  dth.read(pinDHT11, &temperature, &humidity, NULL);  
  Serial.print("Temperature = ");  
  Serial.println(temperature);  
  Serial.print("Humidity = ");  
  Serial.println(humidity);  
  delay(2000);  
 }  

2. ultrasonic sensor distance show in the serial monitor and Buzzer.

project Description: In this project, we see distance management in the serial monitor and buzzer. 

Circuit 1

Code 1

 int trig = 8, echo = 7;  
 long duration , cm , inche;  
 void setup() {  
  // put your setup code here, to run once:  
   Serial.begin(9600);  
   pinMode(trig, OUTPUT);  
   pinMode(echo, INPUT);  
 }  
 void loop() {  
  // put your main code here, to run repeatedly:  
  digitalWrite(trig, HIGH);  
  delay(20);  
  digitalWrite(trig, LOW);  
  duration = pulseIn(echo , HIGH);  
  cm = duration * 0.034/2;   // cm  
  inche = duration * 0.0133/2; // inche  
  Serial.print("CM = ");  
  Serial.println(cm);  
  Serial.print("Inche = ");  
  Serial.println(inche);  
  delay(1000);  
 }  

Circuit 2

Code 2

 int trig = 8, echo = 7;  
 int buzzer = 12;  
 long duration , cm , inche;  
 void setup() {  
  // put your setup code here, to run once:  
   Serial.begin(9600);  
   pinMode(trig, OUTPUT);  
   pinMode(echo, INPUT);  
   pinMode(buzzer, OUTPUT);  
 }  
 void loop() {  
  // put your main code here, to run repeatedly:  
  digitalWrite(trig, HIGH);  
  delay(20);  
  digitalWrite(trig, LOW);  
  duration = pulseIn(echo , HIGH);  
  cm = duration * 0.034/2;   // cm  
  inche = duration * 0.0133/2; // inche  
  if (cm <= 10){  
   digitalWrite(buzzer, HIGH);  
  }  
  else{  
  digitalWrite(buzzer, LOW);  
 }  
  Serial.print("CM = ");  
  Serial.println(cm);  
  Serial.print("Inche = ");  
  Serial.println(inche);  
  delay(1000);  
 }  

3. GAS Detector Project.

project Description: In this project, you can detective gas.

Circuit 1

Code 1

 long gas;  
 void setup() {  
  // put your setup code here, to run once:  
  Serial.begin(9600);  
 }  
 void loop() {  
  // put your main code here, to run repeatedly:  
  gas = analogRead(A5);  
  Serial.print("Value= ");  
  Serial.println(gas);  
  delay(1000);  
 }  

Circuit 2

Code 2

 long gas;  
 int buzzer = 7;  
 void setup() {  
  // put your setup code here, to run once:  
  Serial.begin(9600);  
  pinMode(buzzer,OUTPUT);  
 }  
 void loop() {  
  // put your main code here, to run repeatedly:  
  gas = analogRead(A5);  
  Serial.print("Value= ");  
  Serial.println(gas);  
  if(gas>600){  
   digitalWrite(buzzer , HIGH);  
  }  
  else{  
   digitalWrite(buzzer , LOW);  
  }  
  delay(1000);  
 }  

4. Bluetooth Module Project.

Mobile APK Download  

Circuit 1

Code 1

 char value = 0;  
 void setup()   
 {  
  Serial.begin(9600);  
 }  
 void loop()  
 {  
  if (Serial.available()>0){  
    value = Serial.read();  
       Serial.println(value);  
  }  
  delay(50);  
 }  

Circuit 2

Code 2

 char value = 0;  
 #define led1 13  
 void setup()   
 {  
  Serial.begin(9600);  
  pinMode(led1,OUTPUT);          
 }  
 void loop()  
 {  
  if (Serial.available()>0){  
    value = Serial.read();  
    if(value == '1'){  
     digitalWrite(led1,HIGH);  
    }  
    else if(value == '0'){  
     digitalWrite(led1,LOW);  
    }  
       Serial.println(value);  
  }  
  delay(50);  
 }  

Circuit 3

Code 3

 char value = 0;  
 #define led1 13  
 #define led2 12  
 #define led3 10  
 #define led4 11  
 void setup()   
 {  
  Serial.begin(9600);  
  pinMode(led1,OUTPUT);  
  pinMode(led2,OUTPUT);   
  pinMode(led3,OUTPUT);   
  pinMode(led4,OUTPUT);   
 }  
 void loop()  
 {  
  if (Serial.available()>0){  
    value = Serial.read();  
    if(value == '1'){  
     digitalWrite(led1,HIGH);  
    }  
    else if(value == '0'){  
     digitalWrite(led1,LOW);  
    }  
       else if (value == '2'){  
            digitalWrite(led2,HIGH);  
       }  
       else if(value == '3'){  
     digitalWrite(led2,LOW);  
    }  
       else if (value == '4'){  
           digitalWrite(led3,HIGH);  
       }  
       else if(value == '5'){  
     digitalWrite(led3,LOW);  
    }  
       else if (value == '6'){  
           digitalWrite(led4,HIGH);  
       }  
       else if(value == '7'){  
     digitalWrite(led4,LOW);  
    }  
       Serial.println(value);  
  }  
  delay(50);  
 }  

5. Bluetooth Module With Relay Board Project.

Circuit 1

Code 1

 char value = 0;   
  #define relay1 13   
  #define relay2 12   
  #define relay3 10   
  #define relay4 11   
  void setup()    
  {   
  Serial.begin(9600);   
  pinMode(relay1,OUTPUT);   
  pinMode(relay2,OUTPUT);    
  pinMode(relay3,OUTPUT);    
  pinMode(relay4,OUTPUT);    
  }   
  void loop()   
  {   
  if (Serial.available()>0){   
   value = Serial.read();   
   if(value == '1'){   
    digitalWrite(relay1,HIGH);   
   }   
   else if(value == '0'){   
    digitalWrite(relay1,LOW);   
   }   
     else if (value == '2'){   
       digitalWrite(relay2,HIGH);   
     }   
     else if(value == '3'){   
    digitalWrite(relay2,LOW);   
   }   
     else if (value == '4'){   
       digitalWrite(relay3,HIGH);   
     }   
     else if(value == '5'){   
    digitalWrite(relay3,LOW);   
   }   
     else if (value == '6'){   
       digitalWrite(relay4,HIGH);   
     }   
     else if(value == '7'){   
    digitalWrite(relay4,LOW);   
   }   
     Serial.println(value);   
  }   
  delay(50);   
  }   

6. Receiving data from the sensor and showing in the mobile phone use of  Bluetooth Module.

Circuit 1

Code 1

 #include <SimpleDHT.h>   
  SimpleDHT11 dth;   
  // for DHT11,    
  //  VCC: 5V or 3V   
  //  GND: GND   
  //  DATA: 2   
  int pinDHT11 = 2;   
  void setup() {   
  Serial.begin(9600);   
  Serial.println("Temperature and Humidity");   
  }   
  void loop() {   
  byte temperature = 0;   
  byte humidity = 0;   
  dth.read(pinDHT11, &temperature, &humidity, NULL);   
  Serial.print("Temperature = ");   
  Serial.println(temperature);   
  Serial.print("Humidity = ");   
  Serial.println(humidity);   
  delay(2000);   
  }   

7. Arduino Manager Apps

Apk Download 

Circuit 1

Code 1

 char value = 0;  
 void setup(){  
  Serial.begin(9600);  
 }  
 void loop(){  
  if (Serial.available()>0){   
   value = Serial.read();  
   Serial.println(value);  
  }  
  delay(50);  
 }  

8. Measure soil moisture using Arduino Project

Circuit 1

Code 1

 int soil;  
 void setup() {  
  // put your setup code here, to run once:  
  Serial.begin(9600);  
 }  
 void loop() {  
  // put your main code here, to run repeatedly:  
  soil = analogRead(A0);  
  Serial.println(soil);  
  delay(500);  
 }  

9. PIR sensor using Arduino Project

Circuit 1

Code 1

 int pir = 2;  
 int led = 13;  
 int value;  
 void setup() {  
  // put your setup code here, to run once:  
  pinMode(pir,INPUT);  
  pinMode(led,OUTPUT);  
 }  
 void loop() {  
  // put your main code here, to run repeatedly:  
  value = digitalRead(pir);  
  digitalWrite(led,value);  
 }  

10. Bluetooth Controlled Car 

Circuit 1

Code 1

 char t;  
 #define m1 2
 #define m2 3
 #define m3 4
 #define m4 5
 void setup() {  
 Serial.begin(9600);  
 pinMode(m1,OUTPUT);  //right motors forward  
 pinMode(m2,OUTPUT);  //right motors reverse  
 pinMode(m3,OUTPUT);  //left motors forward  
 pinMode(m4,OUTPUT);  //left motors reverse  
 }  
 void loop() {  
 if(Serial.available()){  
  t = Serial.read();  
 }  
 if(t == 'W'){      //move forward(all motors rotate in forward direction)  
  digitalWrite(m1,HIGH);  
  digitalWrite(m2,LOW);  
  digitalWrite(m3,HIGH);  
  digitalWrite(m4,LOW);  
 }  
 else if(t == 'S'){   //move reverse (all motors rotate in reverse direction)  
  digitalWrite(m1,LOW);  
  digitalWrite(m2,HIGH);  
  digitalWrite(m3,LOW);  
  digitalWrite(m4,HIGH);  
 }  
 else if(t == 'A'){   //turn right (left side motors rotate in forward direction, right side motors rotate in reverse direction for 100ms & stop)  
  digitalWrite(m1,HIGH);  
  digitalWrite(m2,LOW);  
  digitalWrite(m3,LOW);  
  digitalWrite(m4,HIGH);  
  delay(100);  
   
 }  
 else if(t == 'D'){   //turn left (right side motors rotate in forward direction, left side motors rotate in reverse direction for 100ms & stop)  
  digitalWrite(m1,LOW);  
  digitalWrite(m2,HIGH);  
  digitalWrite(m3,HIGH);  
  digitalWrite(m4,LOW);  
  delay(100);  
    
 }  
 else if((t == 's')||(t == 'w')||(t == 'a')||(t == 'd')){   //STOP (all motors stop)  
  digitalWrite(m1,LOW);  
  digitalWrite(m2,LOW);  
  digitalWrite(m3,LOW);  
  digitalWrite(m4,LOW);  
 }  
 delay(100);  
 }  

11. Voice Controlled Car 

Circuit 1

Code 1

 #define m1 2  
 #define m2 3  
 #define m3 4  
 #define m4 5  
 void setup()  
 {  
  pinMode(m1, OUTPUT);  
  pinMode(m2, OUTPUT);  
  pinMode(m3, OUTPUT);  
  pinMode(m4, OUTPUT);  
  Serial.begin(9600);  
 }  
 void loop()  
 {  
  if (Serial.available())  
  {  
  String voice = Serial.readString();  
  Serial.println(voice);  
  if(voice == "forward")  
  {  
   digitalWrite(m1, HIGH);  
   digitalWrite(m2, LOW);  
   digitalWrite(m3, HIGH);  
   digitalWrite(m4, LOW);  
   }  
   if(voice == "backward")  
  {  
   digitalWrite(m2, HIGH);  
   digitalWrite(m1, LOW);  
   digitalWrite(m4, HIGH);  
   digitalWrite(m3, LOW);  
   }  
   if(voice == "left")  
  {  
   digitalWrite(m1, LOW);  
   digitalWrite(m2, LOW);  
   digitalWrite(m3, HIGH);  
   digitalWrite(m4, LOW);  
   }  
   if(voice == "right")  
  {  
   digitalWrite(m1, HIGH);  
   digitalWrite(m2, LOW);  
   digitalWrite(m3, LOW);  
   digitalWrite(m4, LOW);  
   }  
  else if(voice == "stop")  
  {  
   digitalWrite(m1, LOW);  
   digitalWrite(m2, LOW);  
   digitalWrite(m3, LOW);  
   digitalWrite(m4, LOW);  
  }  
  }  
 }  

Code 2 use Function and delay

  #define m1 2   
  #define m2 3   
  #define m3 4   
  #define m4 5   
  void setup()   
  {   
  pinMode(m1, OUTPUT);   
  pinMode(m2, OUTPUT);   
  pinMode(m3, OUTPUT);   
  pinMode(m4, OUTPUT);   
  Serial.begin(9600);   
  }   
  void loop()   
  {   
  if (Serial.available())   
  {   
  String voice = Serial.readString();   
  Serial.println(voice);   
  if(voice == "forward")   
  {   
    forward();  
    delay(1000);  
    stope();  
   }   
   if(voice == "backward")   
  {   
   backward();  
   delay(1000);  
    stope();  
   }   
   if(voice == "left")   
  {   
   left();   
   delay(500);  
   stope();   
   }   
   if(voice == "right")   
  {   
    right();  
   delay(500);  
   stope();  
   }   
  else if(voice == "stop")   
  {   
    stope();  
  }   
  }   
  }   
 void forward(){  
   digitalWrite(m1, HIGH);   
   digitalWrite(m2, LOW);   
   digitalWrite(m3, HIGH);   
   digitalWrite(m4, LOW);  
 }  
 void backward(){  
   digitalWrite(m2, HIGH);   
   digitalWrite(m1, LOW);   
   digitalWrite(m4, HIGH);   
   digitalWrite(m3, LOW);   
 }  
 void left(){  
   digitalWrite(m1, LOW);   
   digitalWrite(m2, LOW);   
   digitalWrite(m3, HIGH);   
   digitalWrite(m4, LOW);   
 }  
 void right(){  
   digitalWrite(m1, HIGH);   
   digitalWrite(m2, LOW);   
   digitalWrite(m3, LOW);   
   digitalWrite(m4, LOW);  
 }  
 void stope(){  
   digitalWrite(m1, LOW);   
   digitalWrite(m2, LOW);   
   digitalWrite(m3, LOW);   
   digitalWrite(m4, LOW);  
 }  

12. line following robot 

 Circuit 1

Code 

#define enA 10//Enable1 L298 Pin enA 
#define in1 9 //Motor1  L298 Pin in1 
#define in2 8 //Motor1  L298 Pin in1 
#define in3 7 //Motor2  L298 Pin in1 
#define in4 6 //Motor2  L298 Pin in1 
#define enB 5 //Enable2 L298 Pin enB 

#define R_S A0 //ir sensor Right
#define L_S A1 //ir sensor Left

void setup(){ // put your setup code here, to run once

pinMode(R_S, INPUT); // declare if sensor as input  
pinMode(L_S, INPUT); // declare ir sensor as input

pinMode(enA, OUTPUT); // declare as output for L298 Pin enA 
pinMode(in1, OUTPUT); // declare as output for L298 Pin in1 
pinMode(in2, OUTPUT); // declare as output for L298 Pin in2 
pinMode(in3, OUTPUT); // declare as output for L298 Pin in3   
pinMode(in4, OUTPUT); // declare as output for L298 Pin in4 
pinMode(enB, OUTPUT); // declare as output for L298 Pin enB 

analogWrite(enA, 150); // Write The Duty Cycle 0 to 255 Enable Pin A for Motor1 Speed 
analogWrite(enB, 150); // Write The Duty Cycle 0 to 255 Enable Pin B for Motor2 Speed 
delay(1000);
}
void loop(){  
if((digitalRead(R_S) == 0)&&(digitalRead(L_S) == 0)){forword();}   //if Right Sensor and Left Sensor are at White color then it will call forword function

if((digitalRead(R_S) == 1)&&(digitalRead(L_S) == 0)){turnRight();} //if Right Sensor is Black and Left Sensor is White then it will call turn Right function  

if((digitalRead(R_S) == 0)&&(digitalRead(L_S) == 1)){turnLeft();}  //if Right Sensor is White and Left Sensor is Black then it will call turn Left function

if((digitalRead(R_S) == 1)&&(digitalRead(L_S) == 1)){Stop();} //if Right Sensor and Left Sensor are at Black color then it will call Stop function
}

void forword(){  //forword
digitalWrite(in1, HIGH); //Right Motor forword Pin 
digitalWrite(in2, LOW);  //Right Motor backword Pin 
digitalWrite(in3, LOW);  //Left Motor backword Pin 
digitalWrite(in4, HIGH); //Left Motor forword Pin 
}

void turnRight(){ //turnRight
digitalWrite(in1, LOW);  //Right Motor forword Pin 
digitalWrite(in2, HIGH); //Right Motor backword Pin  
digitalWrite(in3, LOW);  //Left Motor backword Pin 
digitalWrite(in4, HIGH); //Left Motor forword Pin 
}

void turnLeft(){ //turnLeft
digitalWrite(in1, HIGH); //Right Motor forword Pin 
digitalWrite(in2, LOW);  //Right Motor backword Pin 
digitalWrite(in3, HIGH); //Left Motor backword Pin 
digitalWrite(in4, LOW);  //Left Motor forword Pin 
}

void Stop(){ //stop
digitalWrite(in1, LOW); //Right Motor forword Pin 
digitalWrite(in2, LOW); //Right Motor backword Pin 
digitalWrite(in3, LOW); //Left Motor backword Pin 
digitalWrite(in4, LOW); //Left Motor forword Pin 
}