งานที่ 17

DHT11 Humidity Sensor on Arduino

#include <LiquidCrystal.h>
LiquidCrystal lcd(4, 5, 0, 1, 2, 3);
byte degree_symbol[8] = 
              {
                0b00111,
                0b00101,
                0b00111,
                0b00000,
                0b00000,
                0b00000,
                0b00000,
                0b00000
              };
int gate=11; 
volatile unsigned long duration=0;
unsigned char i[5];
unsigned int j[40];
unsigned char value=0;
unsigned answer=0;
int z=0;
int b=1;
void setup() 
{

lcd.begin(16, 2);
 lcd.print("Temp = ");
 lcd.setCursor(0,1);
 lcd.print("Humidity = ");
 lcd.createChar(1, degree_symbol);
 lcd.setCursor(9,0);
 lcd.write(1);
 lcd.print("C");
 lcd.setCursor(13,1);
 lcd.print("%");
}

void loop() 
{

 delay(1000);
 while(1)
 {
  delay(1000);
  pinMode(gate,OUTPUT);
  digitalWrite(gate,LOW);
  delay(20);
  digitalWrite(gate,HIGH);
  pinMode(gate,INPUT_PULLUP);//by default it will become high due to internal pull up
 // delayMicroseconds(40);

  
  duration=pulseIn(gate, LOW);
  if(duration <= 84 && duration >= 72)
  {
      while(1)
      {
        duration=pulseIn(gate, HIGH);
        
        if(duration <= 26 && duration >= 20){
        value=0;}
        
        else if(duration <= 74 && duration >= 65){
        value=1;}
        
        else if(z==40){
        break;}
        
        i[z/8]|=value<<(7- (z%8));
        j[z]=value;
        z++;
      }
    }
answer=i[0]+i[1]+i[2]+i[3];

if(answer==i[4] && answer!=0)
{
lcd.setCursor(7,0);
lcd.print(i[2]);
lcd.setCursor(11,1);
lcd.print(i[0]);
}

z=0;
i[0]=i[1]=i[2]=i[3]=i[4]=0;
 }
}

งานที่ 16

Arduino Controlled Power Outlet

const int analogInPin = A0;

const int outPin = 8;

int sensorValue = 0;

void setup() 

{

  Serial.begin(9600);

pinMode(outPin, OUTPUT);

digitalWrite(outPin, HIGH);

}

void loop() 

{

  sensorValue = analogRead(analogInPin);

  Serial.println(sensorValue);

  

  if(sensorValue>400)

  {

    digitalWrite(outPin,LOW);

   }

  else 

   {

   digitalWrite(outPin,HIGH);

   }

 delay(1);

}

งานที่ 15

Arduino based Wireless Doorbell










int buz=11;
int sen=2;

void setup() 
{
  pinMode(buz,OUTPUT);
  pinMode(sen,INPUT);

  digitalWrite(buz,LOW);
  digitalWrite(sen,HIGH);
}

void loop() 
{
 while(digitalRead(sen)==HIGH);
 digitalWrite(buz,HIGH);
 while(digitalRead(sen)==LOW);
 digitalWrite(buz,LOW);
}

งานที่ 14

Arduino Traffic Light Controller

int Lane1[] = {13,12,11}; // Lane 1 Red, Yellow and Green

int Lane2[] = {10,9,8};// Lane 2 Red, Yellow and Green

int Lane3[] = {7,6,5};// Lane 3 Red, Yellow and Green

int Lane4[] = {4,3,2};// Lane 4 Red, Yellow and Green

void setup() 

{

  for (int i = 0; i < 3; i++)

  {

    pinMode(Lane1[i], OUTPUT); 

    pinMode(Lane2[i], OUTPUT);

    pinMode(Lane3[i], OUTPUT);

    pinMode(Lane4[i], OUTPUT);

  }

  for (int i = 0; i < 3; i++)

  {

    digitalWrite(Lane1[i], LOW); 

    digitalWrite(Lane2[i], LOW);

    digitalWrite(Lane3[i], LOW);

    digitalWrite(Lane4[i], LOW);

  }

  

}

void loop() 

 {

  digitalWrite(Lane1[2], HIGH);

  digitalWrite(Lane3[0], HIGH);

  digitalWrite(Lane4[0], HIGH);

  digitalWrite(Lane2[0], HIGH);

  delay(7000);

  digitalWrite(Lane1[2], LOW);

  digitalWrite(Lane3[0], LOW);

  digitalWrite(Lane1[1], HIGH);

  digitalWrite(Lane3[1], HIGH);

  delay(3000);

  digitalWrite(Lane1[1], LOW);

  digitalWrite(Lane3[1], LOW);

  digitalWrite(Lane1[0], HIGH);

  digitalWrite(Lane3[2], HIGH);

  delay(7000);

  digitalWrite(Lane3[2], LOW);

  digitalWrite(Lane4[0], LOW);

  digitalWrite(Lane3[1], HIGH);

  digitalWrite(Lane4[1], HIGH);

  delay(3000);

  digitalWrite(Lane3[1], LOW);

  digitalWrite(Lane4[1], LOW);

  digitalWrite(Lane3[0], HIGH);

  digitalWrite(Lane4[2], HIGH);

  delay(7000);

  digitalWrite(Lane4[2], LOW);

  digitalWrite(Lane2[0], LOW);

  digitalWrite(Lane4[1], HIGH);

  digitalWrite(Lane2[1], HIGH);

  delay(3000);

  digitalWrite(Lane4[1], LOW);

  digitalWrite(Lane2[1], LOW);

  digitalWrite(Lane4[0], HIGH);

  digitalWrite(Lane2[2], HIGH);

  delay(7000);

  digitalWrite(Lane1[0], LOW);

  digitalWrite(Lane2[2], LOW);

  digitalWrite(Lane1[1], HIGH);

  digitalWrite(Lane2[1], HIGH);

  delay(3000);

  digitalWrite(Lane2[1], LOW);

  digitalWrite(Lane1[1], LOW);

 }

งานที่ 13

Arduino 4-Digit 7-Segment LED Display

#define duration 5000 

#define A 2

#define B 3

#define C 4

#define D 5

#define E 6

#define F 7

#define G 8

#define DP 9

#define disp1 10

#define disp2 11

#define disp3 12

#define disp4 13

#define numbersegments { \

{1,1,1,1,1,1,0,0},\

{0,1,1,0,0,0,0,0},\

{1,1,0,1,1,0,1,0},\

{1,1,1,1,0,0,1,0},\

{0,1,1,0,0,1,1,0},\

{1,0,1,1,0,1,1,0},\

{1,0,1,1,1,1,1,0},\

{1,1,1,0,0,0,0,0},\

{1,1,1,1,1,1,1,0},\

{1,1,1,0,0,1,1,0},\

}

byte numbers[10][8] = numbersegments; 

const int segments[8] = {A, B, C, D, E, F, G, DP};

void setup() 

{ 

  pinMode(A, OUTPUT);

  pinMode(B, OUTPUT);

  pinMode(C, OUTPUT);

  pinMode(D, OUTPUT);

  pinMode(E, OUTPUT);

  pinMode(F, OUTPUT);

  pinMode(G, OUTPUT);

  pinMode(DP, OUTPUT);

  pinMode(disp1, OUTPUT);

  pinMode(disp2, OUTPUT);  

  pinMode(disp3, OUTPUT);

  pinMode(disp4, OUTPUT);

  digitalWrite(A, LOW);

  digitalWrite(B, LOW);

  digitalWrite(C, LOW);

  digitalWrite(D, LOW);

  digitalWrite(E, LOW);

  digitalWrite(F, LOW);

  digitalWrite(G, LOW);

  digitalWrite(DP, LOW);

  digitalWrite(disp1, LOW);

  digitalWrite(disp2, LOW);

  digitalWrite(disp3, LOW);

  digitalWrite(disp4, LOW);

 } 

 void loop()

 { 

  for (int digit4=0; digit4<10; digit4++)

  { 

    for (int digit3=0; digit3<10; digit3++)

     { 

       for (int digit2=0; digit2<10; digit2++)

        { 

          for (int digit1=0; digit1<10; digit1++)

           { 

             for (int t=0; t<30; t++)

              { 

                setsegments(digit1, disp1, duration);

                setsegments(digit2, disp2, duration);

                setsegments(digit3, disp3, duration);

                setsegments(digit4, disp4, duration);

               }

            }

         }

      }

   }

 }        

  void setsegments(int number, int digit, int ontime)

  { 

   

for (int seg=0; seg<8; seg++)

    { 

      if(numbers[number][seg]==1)

      { 

        digitalWrite(segments[seg], HIGH);

      }

      else 

      {

        digitalWrite(segments[seg], LOW);

      }

    }

    digitalWrite(digit, HIGH);

    delayMicroseconds(ontime);

    digitalWrite(digit, LOW);

  }

งานที่ 12

Arduino Light Sensor

int sensorPin = A0;    // select the input pin for the potentiometer

//int ledPin = 13;      // select the pin for the LED

int sensorValue = 0;  // variable to store the value coming from the sensor

void setup() {

  // declare the ledPin as an OUTPUT:

  Serial.begin(9600);

  pinMode(ledPin, OUTPUT);

  pinMode(11,OUTPUT);

}

/*void loop() {

  // read the value from the sensor:

  sensorValue = analogRead(sensorPin);

  // turn the ledPin on

  digitalWrite(ledPin, HIGH);

  // stop the program for <sensorValue> milliseconds:

  delay(sensorValue);

  // turn the ledPin off:

  digitalWrite(ledPin, LOW);

  // stop the program for for <sensorValue> milliseconds:

  delay(sensorValue);

}*/

void loop()

{

  sensorValue=analogRead(sensorPin);

  if(sensorValue <= 14)

  digitalWrite(11,HIGH);

  else

  digitalWrite(11,LOW);

  Serial.println(sensorValue);

  delay(2);

}

งานที่ 11

Digital Arduino Voltmeter

#include "LiquidCrystal.h"

LiquidCrystal lcd(2, 3, 4, 5, 6, 7);

float voltage = 0.0;

float temp=0.0;

int analog_value;

void setup()

{

   lcd.begin(16, 2); 

   lcd.setCursor (0,0);

   lcd.print(" Arduino based ");

   lcd.setCursor(0,1); 

   lcd.print("Digital Voltmeter");

delay(2000);

}

void loop() 

{

   

   analog_value = analogRead(A0);

   temp = (analog_value * 5.0) / 1024.0; 

   voltage = temp/(0.0909);

   if (voltage < 0.1) 

   {

     voltage=0.0;

   } 

    lcd.clear();

    lcd.setCursor(0, 0);

    lcd.print("Voltage= ");

    lcd.print(voltage);

    lcd.setCursor(13,1);

    lcd.print("V");

    delay(30);

}

งานที่ 10

Speed and Direction Control of DC Motor using Arduino

const int potPin = A0;

const int buttonPin = 7;

const int forward1 = 5;

const int forward2 = 4;

const int backward1 = 3;

const int backward2 = 2;

int potValue = 0;

int motorValue = 0;

int buttonState = 0;

boolean a;

void setup() 

{

 pinMode(buttonPin, INPUT_PULLUP);

 pinMode (forward1, OUTPUT);

 pinMode (forward2, OUTPUT);

 pinMode (backward1, OUTPUT);

 pinMode (backward2, OUTPUT);

}

void loop() 

{

 potValue = analogRead(potPin);  

 motorValue = map(potValue, 0, 1023, 0, 255);

 buttonState = digitalRead(buttonPin);

 if (buttonState == LOW) 

  {

    a=!a;

  }

  if(a)

  {

   analogWrite(backward1, motorValue);

   digitalWrite (backward2, HIGH);  

   digitalWrite (forward1, LOW);

   digitalWrite (forward2, LOW);    

  

  }

 else 

  {

   

   analogWrite(forward1, motorValue);

   digitalWrite (forward2, HIGH);

   digitalWrite (backward1, LOW);

   digitalWrite (backward2, LOW);

  

  }

  

}

งานที่ 9

Interfacing LCD with Arduino

     #include<LiquidCrystal.h>

     LiquidCrystal lcd (5, 4, 3, 2, 1, 0);  // sets the interfacing pins

     Void setup ()

     {

     lcd.begin(16, 2);  // initializes the 16x2 LCD

     }

     Void loop ()

    {

     lcd.setCursor (0, 0);           //sets the cursor at row 0 column 0

     lcd.print ("Electronichub.org"); // prints 16x2 LCD MODULE

     lcd.setCursor (0,1);           //sets the cursor at row 0 column 1

     lcd.print ("16X2 LCD");     

     }