Kerala IoT challenge

About Me

Hey folks! I'm Muhammed Hisham. I'm currently pursuing my Bachelor's degree(4th year) in Electrical and Electronic Engineering at College Of Engineering Trikaripur,Kasargod. This page is created to exibit my activities and experiments on IoT.

Experiment 1 -Hello World LED Blinking

Hardware needed

• Arduino Uno Board x1
• USB Cable xl
• LED (Any Color)x1
• 220 OHM Resistor x1
• Breadboard
• Jumber Wires (male to male) x2

code

void setup()
{ 
  pinMode(8, OUTPUT);
}<br> 
void loop() 
{
  digitalWrite(8, HIGH);
  delay(1000);
  digitalWrite(8, LOW);
  delay(1000);
}

video

e1.mp4

Experiment 2 : Traffic Light

Hardware needed

• Arduino Uno Board x1
• USB Cable xl
• RED M5 LED x1
• YELLOW M5 LED x1
• GREEN M5LED x1
• 220 OHM Resistor x1
• Breadboard
• Breadboard Jumber Wires are needed

Code

int redled =10; // initialize digital pin 8.
int yellowled =7; // initialize digital pin 7.
int greenled =4; // initialize digital pin 4.
void setup()
{
pinMode(redled, OUTPUT);// set the pin with red LED as “output”
pinMode(yellowled, OUTPUT); // set the pin with yellow LED as “output”
pinMode(greenled, OUTPUT); // set the pin with green LED as “output”
}
void loop()
{
digitalWrite(greenled, HIGH);//// turn on green LED
delay(5000);// wait 5 seconds

digitalWrite(greenled, LOW); // turn off green LED
for(int i=0;i<3;i++)// blinks for 3 times
{
delay(500);// wait 0.5 second
digitalWrite(yellowled, HIGH);// turn on yellow LED
delay(500);// wait 0.5 second
digitalWrite(yellowled, LOW);// turn off yellow LED
} 
delay(500);// wait 0.5 second
digitalWrite(redled, HIGH);// turn on red LED
delay(5000);// wait 5 seconds
digitalWrite(redled, LOW);// turn off red LED
}

video

e2.mp4

Experiment 3 : LED Chasing Effect

Hardware required

• Arduino Uno Board x1
• USB Cable xl
• LED (Any Color)x1
• 220 OHM Resistor x1
• Breadboard
• Jumber Wires (male to male) x2

Code

  int BASE = 2 ;  // the I/O pin for the first LED
int NUM = 6;   // number of LEDs
void setup()
{
   for (int i = BASE; i < BASE + NUM; i ++) 
   {
     pinMode(i, OUTPUT);   // set I/O pins as output
   }
}
void loop()
{
   for (int i = BASE; i < BASE + NUM; i ++) 
   {<br>
     digitalWrite(i, LOW);    // set I/O pins as “low”, turn off LEDs one by one.
     delay(200);        // delay
   }
   for (int i = BASE; i < BASE + NUM; i ++) 
   {
     digitalWrite(i, HIGH);    // set I/O pins as “high”, turn on LEDs one by one
     delay(200);        // delay
   }  
}

video

e3.mp4

Experiment 4 : Button Controlled LED

Hardware Required

• Arduino Uno
• Button switch x1
• Red M5 LED x1
• 220ΩResistor x1
• 10KΩ Resistor x1
• Breadboard x1
• Breadboard Jumper Wire x6
• USB cable x1

Code

int ledpin=11;// initialize pin 11
int inpin=7;// initialize pin 7
int val;// define val
void setup()
{
pinMode(ledpin,OUTPUT);// set LED pin as “output”
pinMode(inpin,INPUT);// set button pin as “input”
}
void loop()
{
val=digitalRead(inpin);// read the level value of pin 7 and assign if to val
if(val==LOW)// check if the button is pressed, if yes, turn on the LED
{ digitalWrite(ledpin,LOW);}
else
{ digitalWrite(ledpin,HIGH);}
}

video

e4.mp4

Experiment 5 : Buzzer

Hardware Required

• Arduino Uno
• Buzzer x1
• Breadboard x1
• Breadboard Jumper Wire x2
• USB cable x1

Code

int buzzer=8;// initialize digital IO pin that controls the buzzer
void setup() 
{ 
  pinMode(buzzer,OUTPUT);// set pin mode as “output”
} 
void loop() 
{
digitalWrite(buzzer, HIGH); // produce sound
}

video

e5.mp4

Experiment 6: RGB LED

Hardware Required

• Arduino Uno
• RGB Led x1
• Resistor x3
• Breadboard x1
• Breadboard Jumper Wire x5
• USB cable x1

Code

int red = 11;
int blue =10;
int green =9;
int x;
void setup() {
  pinMode(red, OUTPUT);
  pinMode(blue, OUTPUT);
  pinMode(green, OUTPUT);
  Serial.begin(9600);
}
void loop() 
{
for(x=255; x>0; x--)
  {
   analogWrite(11, x);
   analogWrite(10, 255-x);
   analogWrite(9, 128-x);
   delay(10); 
  }
for(x=0; x<255; x++)
  {
   analogWrite(11, x);
   analogWrite(10, 255-x);
   analogWrite(9, 128-x);
   delay(10); 
  }
 Serial.println(x, DEC);
}

Simulation

Experiment 7: LDR Light Sensor

Hardware Required

• Arduino Uno Board
• Photo Resistor*1
• Red M5 LED*1
• 10KΩ Resistor*1
• 220Ω Resistor*1
• Breadboard*1
• Breadboard Jumper Wire*5
• USB cable*1

Code

int potpin=0;// initialize analog pin 0, connected with photovaristor
int ledpin=11;// initialize digital pin 11, 
int val=0;// initialize variable val
void setup()
{
pinMode(ledpin,OUTPUT);// set digital pin 11 as “output”
Serial.begin(9600);// set baud rate at “9600”
}
void loop()
{
val=analogRead(potpin);// read the value of the sensor and assign it to val
Serial.println(val);// display the value of val
analogWrite(ledpin,val/4);// set up brightness（maximum value 255）
delay(10);// wait for 0.01 
}

video

doc_2021-11-29_19-43-40.mp4

Experiment 8: Flame Sensor

Hardware Required

• Arduino Uno Board*1
• Flame Sensor *1
• Buzzer *1
• 10K Resistor *1
• Breadboard Jumper Wire*6
• USB cable*1

Code

int flame=0;// select analog pin 0 for the sensor
int Beep=9;// select digital pin 9 for the buzzer
int val=0;// initialize variable
 void setup() 
{
  pinMode(Beep,OUTPUT);// set LED pin as “output”
 pinMode(flame,INPUT);// set buzzer pin as “input”
 Serial.begin(9600);// set baud rate at “9600”
 } 
void loop() 
{ 
  val=analogRead(flame);// read the analog value of the sensor 
  Serial.println(val);// output and display the analog value
  if(val>=600)// when the analog value is larger than 600, the buzzer will buzz
  {  
   digitalWrite(Beep,HIGH); 
   }else 
   {  
     digitalWrite(Beep,LOW); 
    }
   delay(500); 
}

video

video_2021-11-29_19-11-02.mp4

Experiment 9 : LM35 Temperature Sensor

Hardware Required

• Arduino Uno Board*1
• LM35*1
• Breadboard*1
• Breadboard Jumper Wire*5
• USB cable*

Code

int potPin = 0; // initialize analog pin 0 for LM35 temperature sensor
void setup()
{
Serial.begin(9600);// set baud rate at”9600”
}
void loop()
{
int val;// define variable
int dat;// define variable
val=analogRead(0);// read the analog value of the sensor and assign it to val
dat=(125*val)>>8;// temperature calculation formula
Serial.print("Tep");// output and display characters beginning with Tep
Serial.print(dat);// output and display value of dat
Serial.println("C");// display “C” characters
delay(500);// wait for 0.5 second
}

Serial Monitor Output

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Experiment image

Experiment 10: IR Remote Control Using TSOP

Hardware Required

• Arduino Uno Board*1
• Infrared Remote Controller(You can use TV Remote or any other remote) *1
• Infrared Receiver *1
• LED *6
• 220ΩResistor *6
• Breadboard Wire *11
• USB cable*1

Code

#include <IRremote.h>
int RECV_PIN = 11;
int LED1 = 2;
int LED2 = 3;
int LED3 = 4;
int LED4 = 5;
int LED5 = 6;
int LED6 = 7;
long on1  = 0x0080412701;
long off1 = 0x0080412702;
long on2 = 0x0080412702;
long off2 = 0x0080412703;
long on3 = 0x0080412703;
long off3 = 0x0080412704;
long on4 = 0x0080412704;
long off4 = 0x0080412705;
long on5 = 0x0080412705;
long off5 = 0x0080412706;
long on6 = 0x0080412706;
long off6 = 0x0080412707 ;
IRrecv irrecv(RECV_PIN);
decode_results results;
void setup()
 {
  pinMode(RECV_PIN, INPUT);   
  pinMode(LED1, OUTPUT);
  pinMode(LED2, OUTPUT);
  pinMode(LED3, OUTPUT);
  pinMode(LED4, OUTPUT);
  pinMode(LED5, OUTPUT);
  pinMode(LED6, OUTPUT);  
  pinMode(13, OUTPUT);
  Serial.begin(9600);
   irrecv.enableIRIn(); // Start the receiver
 }
int on = 0;
unsigned long last = millis();
void loop() 
{
  if (irrecv.decode(&results)) 
   {
    // If it's been at least 1/4 second since the last
    // IR received, toggle the relay
    if (millis() - last > 250) 
      {
       on = !on;
//       digitalWrite(8, on ? HIGH : LOW);
       digitalWrite(13, on ? HIGH : LOW);
      
      }
    if (results.value == on1 )
       digitalWrite(LED1, HIGH);
    if (results.value == off1 )
       digitalWrite(LED1, LOW); 
    if (results.value == on2 )
       digitalWrite(LED2, HIGH);
    if (results.value == off2 )
       digitalWrite(LED2, LOW); 
    if (results.value == on3 )
       digitalWrite(LED3, HIGH);
    if (results.value == off3 )
       digitalWrite(LED3, LOW);
    if (results.value == on4 )
       digitalWrite(LED4, HIGH);
    if (results.value == off4 )
       digitalWrite(LED4, LOW); 
    if (results.value == on5 )
       digitalWrite(LED5, HIGH);
    if (results.value == off5 )
       digitalWrite(LED5, LOW); 
    if (results.value == on6 )
       digitalWrite(LED6, HIGH);
    if (results.value == off6 )
       digitalWrite(LED6, LOW);        
    last = millis();      
irrecv.resume(); // Receive the next value
  }
}

video

doc_2021-11-29_18-52-51.mp4

Experiment 11 : Potentiometer analog Value Reading

Hardware Required

• Arduino Uno Board*1]
• 10K Potentiometer *1
• Breadboard*1
• Breadboard Jumper Wire*3
• USB cable*1

Code

int potpin=0;// initialize analog pin 0
int ledpin=13;// initialize digital pin 13
int val=0;// define val, assign initial value 0
void setup()
{
pinMode(ledpin,OUTPUT);// set digital pin as “output”
Serial.begin(9600);// set baud rate at 9600
}
void loop()
{
digitalWrite(ledpin,HIGH);// turn on the LED on pin 13
delay(50);// wait for 0.05 second
digitalWrite(ledpin,LOW);// turn off the LED on pin 13
delay(50);// wait for 0.05 second
val=analogRead(potpin);// read the analog value of analog pin 0, and assign it to val 
Serial.println(val);// display val’s value
}

Serial Monitor Output

Experiment

image

Experiment 12: 7 Segment Display

Hardware Required

• Arduino Uno Board*1
• 1-digit LED Segment Display*1
• 220Ω Resistor*8
• Breadboard*1
• Breadboard Jumper Wires *several
• USB cable*1

Code

int a=7;// set digital pin 7 for segment a
int b=6;// set digital pin 6 for segment b
int c=5;// set digital pin 5 for segment c
int d=10;// set digital pin 10 for segment d
int e=11;// set digital pin 11 for segment e
int f=8;// set digital pin 8 for segment f
int g=9;// set digital pin 9 for segment g
int dp=4;// set digital pin 4 for segment dp
void digital_0(void) // display number 5
{
unsigned char j;
digitalWrite(a,HIGH);
digitalWrite(b,HIGH);
digitalWrite(c,HIGH);
digitalWrite(d,HIGH);
digitalWrite(e,HIGH);
digitalWrite(f,HIGH);
digitalWrite(g,LOW);
digitalWrite(dp,LOW);
}
void digital_1(void) // display number 1
{
unsigned char j;
digitalWrite(c,HIGH);// set level as “high” for pin 5, turn on segment c
digitalWrite(b,HIGH);// turn on segment b
for(j=7;j<=11;j++)// turn off other segments
digitalWrite(j,LOW);
digitalWrite(dp,LOW);// turn off segment dp
}
void digital_2(void) // display number 2
{
unsigned char j;
digitalWrite(b,HIGH);
digitalWrite(a,HIGH);
for(j=9;j<=11;j++)
digitalWrite(j,HIGH);
digitalWrite(dp,LOW);
digitalWrite(c,LOW);
digitalWrite(f,LOW);
}
void digital_3(void) // display number 3
{digitalWrite(g,HIGH);
digitalWrite(a,HIGH);
digitalWrite(b,HIGH);
digitalWrite(c,HIGH);
digitalWrite(d,HIGH);
digitalWrite(dp,LOW);
digitalWrite(f,LOW);
digitalWrite(e,LOW);
}
void digital_4(void) // display number 4
{digitalWrite(c,HIGH);
digitalWrite(b,HIGH);
digitalWrite(f,HIGH);
digitalWrite(g,HIGH);
digitalWrite(dp,LOW);
digitalWrite(a,LOW);
digitalWrite(e,LOW);
digitalWrite(d,LOW);
}
void digital_5(void) // display number 5
{
unsigned char j;
digitalWrite(a,HIGH);
digitalWrite(b, LOW);
digitalWrite(c,HIGH);
digitalWrite(d,HIGH);
digitalWrite(e, LOW);
digitalWrite(f,HIGH);
digitalWrite(g,HIGH);
digitalWrite(dp,LOW);
}
void digital_6(void) // display number 6
{
unsigned char j;
for(j=7;j<=11;j++)
digitalWrite(j,HIGH);
digitalWrite(c,HIGH);
digitalWrite(dp,LOW);
digitalWrite(b,LOW);
}
void digital_7(void) // display number 7
{
unsigned char j;
for(j=5;j<=7;j++)
digitalWrite(j,HIGH);
digitalWrite(dp,LOW);
for(j=8;j<=11;j++)
digitalWrite(j,LOW);
}
void digital_8(void) // display number 8
{
unsigned char j;
for(j=5;j<=11;j++)
digitalWrite(j,HIGH);
digitalWrite(dp,LOW);
}
void digital_9(void) // display number 5
{
unsigned char j;
digitalWrite(a,HIGH);
digitalWrite(b,HIGH);
digitalWrite(c,HIGH);
digitalWrite(d,HIGH);
digitalWrite(e, LOW);
digitalWrite(f,HIGH);
digitalWrite(g,HIGH);
digitalWrite(dp,LOW);
}
void setup()
{
int i;// set variable
for(i=4;i<=11;i++)
pinMode(i,OUTPUT);// set pin 4-11as “output”
}
void loop()
{
while(1)
{
digital_0();// display number 0
delay(1000);// wait for 1s
digital_1();// display number 1
delay(1000);// wait for 1s
digital_2();// display number 2
delay(1000); // wait for 1s
digital_3();// display number 3
delay(1000); // wait for 1s
digital_4();// display number 4
delay(1000); // wait for 1s
digital_5();// display number 5
delay(1000); // wait for 1s
digital_6();// display number 6
delay(1000); // wait for 1s
digital_7();// display number 7
delay(1000); // wait for 1s
digital_8();// display number 8
delay(1000); // wait for 1s
digital_9();// display number 9
delay(1000); // wait for 1s
}}

video

doc_2021-11-29_19-57-23.mp4

Assignment 1 : Arduino LED Temperature Indicator

Hardware Required

• Arduino Uno/Genuino
• Breadboard
• Jumper wires (generic)
• 3 220Ω resistors
• 3 LEDs (any color)
• A temperature sensor

Code

const int hot = 87; //set hot parameter
const int cold = 75; //set cold parameter
void setup() {
pinMode(A2, INPUT); //sensor
pinMode(2, OUTPUT); //blue
pinMode(3, OUTPUT); //green
pinMode(4, OUTPUT); //red
Serial.begin(9600);
}
void loop() {
int sensor = analogRead(A2);
float voltage = (sensor / 1024.0) * 5.0;
float tempC = (voltage - .5) * 100;
float tempF = (tempC * 1.8) + 32;
Serial.print("temp: ");
Serial.print(tempF);
if (tempF < cold) { //cold
digitalWrite(2, HIGH);
digitalWrite(3, LOW);
digitalWrite(4, LOW);
Serial.println(" It's Cold.");
}
else if (tempF >= hot) { //hot
digitalWrite(2, LOW);
digitalWrite(3, LOW);
digitalWrite(4, HIGH);
Serial.println(" It's Hot.");
}
else { //fine
digitalWrite(2, LOW);
digitalWrite(3, HIGH);
digitalWrite(4, LOW);
Serial.println(" It's Fine.");
}
delay(10);
}

Video

Assignment 2 : Rolling Dice using Arduino and 7 Segment Display

Hardware Required

• Arduino UNO
• 7 Segment Display
• Push Button
• 7 x 220Ω Resistors (1/4 Watt)
• Breadboard
• Power Supply
• Connecting Wires

Code

//e = 2;
 //d = 3;
 //c = 4;
 //g = 5;
 //f = 6;
 //a = 7;
 //b = 8;
                 
int num[10][7]={ {0,0,0,1,0,0,0},
                 {1,1,0,1,1,1,0},
                 {0,0,1,0,1,0,0},
                 {1,0,0,0,1,0,0},
                 {1,1,0,0,0,1,0},
                 {1,0,0,0,0,0,1},
                 {0,0,0,0,0,1,1},
                 {1,1,0,1,1,0,0},
                 {0,0,0,0,0,0,0},
                 {1,0,0,0,0,0,0} 
	        };

long r_num;     
int roll = 12;            
bool state = true; 

void setup() 
{
pinMode(2,OUTPUT);
pinMode(3,OUTPUT);
pinMode(4,OUTPUT);
pinMode(5,OUTPUT);
pinMode(6,OUTPUT);
pinMode(7,OUTPUT);
pinMode(8,OUTPUT);
pinMode(9,OUTPUT);
pinMode(12,INPUT_PULLUP);

digitalWrite(2,HIGH);
digitalWrite(3,HIGH);
digitalWrite(4,HIGH);
digitalWrite(5,HIGH);
digitalWrite(6,HIGH);
digitalWrite(7,HIGH);
digitalWrite(8,HIGH);

digitalWrite(9,HIGH);

randomSeed(analogRead(0));

}

void loop() 
{
 if(state)
 {
   r_num=random(1,6);
   for(int i=0;i<7;i++)
    {
      digitalWrite(i+2,num[r_num][i]);
    }
     //delay(1500);
    state=false;
 }

while(digitalRead(roll)==LOW)
{
   for(int i=0;i<10;i++)
    {
     for(int j=0;j<7;j++)
       {
         digitalWrite(j+2,num[i][j]);
       }
     delay(50);
    }
 state=true;
}
}

Video

doc_2021-12-03_07-44-46.mp4