How to connect LCD Display to Arduino Uno

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In this blog, we are going to learn how to connect an LCD display (16 x 2) to Arduino UNO. Display units play an important role in establishing good communication between the human and machine worlds. And so they are a big part of embedded systems. 

Introduction

The 16×2 LCD will have a total of 32 characters 16 in 1st line and a further 16 in 2nd line. In 16×2 LCD there are 16 pins overall if there is a backlight, 14 pins if there is no backlight In each character there are 50 pixels.

Components Required

Hardware: 

  • ARDUINO UNO
  • power supply (5v)
  • (16x2LCD),
  • 100uF capacitor.
  • Breadboard

Software:

  •  Arduino IDE
  • LiquidCrystal Library
lcd arduino

Circuit connection of LCD Display To Arduino Uno

lcd arduino display
The above image shows the circuit diagram of the 16×2 LCD connected to ARDUINO UNO.

Now let’s build the circuit. A circuit layout can be described in several ways. For this project ( How To Connect LCD 16×2 Display To Arduino ), we are using a physical layout diagram similar to the one shown in the above figure 2.

By comparing the wiring diagram with the sketched functions, You should start making sense of the circuit.

  • LCD RS pin to digital pin 12
  • LCD Enable pin to digital pin 11
  • LCD D4 pin to digital pin 5
  • LCD D5 pin to digital pin 4
  • LCD D6 pin to digital pin 3
  • LCD D7 pin to digital pin 2
  • LCD R/W pin to ground
  • LCD VSS pin to ground
  • LCD VCC pin to 5V
  • 10K resistor
  • ends to +5V and ground
  • wiper to LCD VO pin (pin 3)

If you want to see the stimulation of the project. Click here https://www.tinkercad.com/things/bg9LRuK48VV.

In this blog, we understood how to connect the LCD screen to Arduino UNO. In the next blog, I will cover how to display text on an LCD screen using the Arduino IDE.

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