ESP32-LIQUID CRYSTAL DISPLAY

ESP32-LIQUID CRYSTAL DISPLAY

Aim:

This experiment shows how to display the message on LCD using ESP32-Microcontroller.

Description:

To display the message on the LCD screen.

Hardware required:

ESP32-Microcontroller Development board.

Pin connection:

Pin Mapping:

LCD	ESP32
RS	I04
E	I012
D4	I032
D5	I033
D6	I025
D7	I026
R/W	GND

Procedure:

1.        The above pin connection shows how to interface LCD with ESP32 board.

2.        Do the connections as shown in the pin diagram and pin mapping.

3.        Connect the USB cable to the board.

4.        Open Arduino IDE .Select DOIT ESP32 DEVKIT V1in boards and select COM port.

5.        Verify the program and Upload it.

6.        Now you can see the output displaying the message on LCD of ESP32 microcontroller board.

Program:

/* Include the LCD library */ #include<LiquidCrystal.h>

/* Mapping the pins with library rs=4,en=12,d4=32,d5=33,d6=25,d7=26 */

LiquidCrystallcd(4,12,32,33,25,26);

void setup(void)

{

/* set baud rate */

Serial.begin(9600);

/* set up the LCD's number of columns and rows */ lcd.begin(16,2);

}

void loop(void)

{

/* set the cursor to column 0, line 1

(note: line 1 is the second row, since counting begins with 0) */ lcd.setCursor(0,1);

/* Print a message to the LCD */ lcd.print("*WELCOME TO RDL*");

/*print the number of seconds since reset */ delay(5000);

/* clear the message */ lcd.clear();

}