ESP32-SEVEN SEGMENT DISPLAYS

ESP32-SEVEN SEGMENT DISPLAYS

Aim:

Interfacing ESP32-Microcontroller with seven segment display, to display the numbers.

Hardware Required:

ESP32-Microcontroller development board

Connections:

Pin Mapping:

A	I04
B	I012
C	I033
D	I032
E	I025
F	I026
DP	I05
D1	GND

Program:

void setup()

{

  // define pin modes

pinMode(4,OUTPUT); //Set pin D2-D9 as input pins

pinMode(12,OUTPUT);

pinMode(33,OUTPUT);

pinMode(32,OUTPUT);

pinMode(25,OUTPUT);

pinMode(26,OUTPUT);

pinMode(27,OUTPUT);

pinMode(5,OUTPUT);

}

void loop() 

{

  // print 0

  {

   digitalWrite(4,LOW);

   digitalWrite(12,LOW);

   digitalWrite(33,LOW);

   digitalWrite(32,LOW);

   digitalWrite(25,LOW);

   digitalWrite(26,LOW);

   digitalWrite(27,HIGH);

   digitalWrite(5,LOW);

   delay(1000);

  }

 // print 1

  {

   digitalWrite(4,HIGH);

   digitalWrite(12,LOW);

   digitalWrite(33,LOW);

   digitalWrite(32,HIGH);

   digitalWrite(25,HIGH);

   digitalWrite(26,HIGH);

   digitalWrite(27,HIGH);

   digitalWrite(5,LOW);

   delay(1000);

  }

 // print 2

{

   digitalWrite(4,LOW);

   digitalWrite(12,LOW);

   digitalWrite(33,HIGH);

   digitalWrite(32,LOW);

   digitalWrite(25,LOW);

   digitalWrite(26,HIGH);

   digitalWrite(27,LOW);

   digitalWrite(5,LOW);

   delay(1000);

  }

  // print 3

  {

   digitalWrite(4,LOW);

   digitalWrite(12,LOW);

   digitalWrite(33,LOW);

   digitalWrite(32,LOW);

   digitalWrite(25,HIGH);

   digitalWrite(26,HIGH);

   digitalWrite(27,LOW);

   digitalWrite(5,LOW); 

   delay(1000);

  }

  // print 4

  {

   digitalWrite(4,HIGH);

   digitalWrite(12,LOW);

   digitalWrite(33,LOW);

   digitalWrite(32,HIGH);

   digitalWrite(25,HIGH);

   digitalWrite(26,LOW);

   digitalWrite(27,LOW);

   digitalWrite(5,LOW);

   delay(1000);

  }

  // print 5

  {

   digitalWrite(4,LOW);

   digitalWrite(12,HIGH);

   digitalWrite(33,LOW);

   digitalWrite(32,LOW);

   digitalWrite(25,HIGH);

   digitalWrite(26,LOW);

   digitalWrite(27,LOW);

   digitalWrite(5,LOW);  

   delay(1000);

  }

  // print 6

  {

   digitalWrite(4,LOW);

   digitalWrite(12,HIGH);

   digitalWrite(33,LOW);

   digitalWrite(32,LOW);

   digitalWrite(25,LOW);

   digitalWrite(26,LOW);

   digitalWrite(27,LOW);

   digitalWrite(5,LOW);

   delay(1000);

  }

  // print 7

  {

   digitalWrite(4,LOW);

   digitalWrite(12,LOW);

   digitalWrite(33,LOW);

   digitalWrite(32,HIGH);

   digitalWrite(25,HIGH);

   digitalWrite(26,HIGH);

   digitalWrite(27,HIGH);

   digitalWrite(5,LOW);

   delay(1000);

  }

  // print 8

  {

   digitalWrite(4,LOW);

   digitalWrite(12,LOW);

   digitalWrite(33,LOW);

   digitalWrite(32,LOW);

   digitalWrite(25,LOW);

   digitalWrite(26,LOW);

   digitalWrite(27,LOW);

   digitalWrite(5,LOW);

   delay(1000);

  }

  // print 9

  {

   digitalWrite(4,LOW);

   digitalWrite(12,LOW);

   digitalWrite(33,LOW);

   digitalWrite(32,LOW);

   digitalWrite(25,HIGH);

   digitalWrite(26,LOW);

   digitalWrite(27,LOW);

   digitalWrite(5,LOW); 

   delay(1000);

  } 

}

ESP32-CONTROLLING LED USING SWITCH

ESP32-CONTROLLING LED USING SWITCH

Aim:

Controlling LED using a Switch

Objective:

Understanding the working of switch. Turn ON the led when switch is pressed and Turn off when it is released

Connections:

Pin Mapping:

Switch	I012
LED	I04

Program:

void setup() {

pinMode(4, OUTPUT);//Initialize the output pin 

pinMode(12, INPUT);//Switch is connected to pin 12

Serial.begin(9600);

}

// the loop function runs over and over again forever

void loop() { 

if (digitalRead(12)==HIGH)

{

digitalWrite(4, HIGH);// Turn the LED on

delay(1000);   // Wait for a second.

digitalWrite(4, LOW);  // Turn OFF LED

delay(1000); // Wait for a second.

}

}

ESP32- BLINKING AN LED

ESP32- BLINKING AN LED

Aim:

 Turn ON and OFF an LED after Particular delay

Objective:

To learn how to connect LED to digital pins of an ESP32 Microcontroller and program to blink an LED

Connections:

Pin Mapping:

LED

I04

Program:

void setup() {

pinMode(4, OUTPUT);//Initialize the output pin

}

// the loop function runs over and over again forever

void loop() {

digitalWrite(4, HIGH);// Turn the LED on

 delay(1000);   // Wait for a second.

digitalWrite(4, LOW);  // Turn OFF LED

delay(1000); // Wait for a second.

}

ESP32 INSTALLATION IN ARDUINO

ESP32 INSTALLATION IN ARDUINO

Step1:

Open the preferences window from the Arduino IDE. Go to File> Preferences

2.       Step2: Enter https://dl.espressif.com/dl/package_esp32_index.json into   the  “Additional  Board  Manager URLs”. Then, click the “OK” button

3.       Open boards manager. Go to Tools > Board > Boards Manager

4.       Select ESP32 by Espressif Systems and install it.