HARDWARE REQUIRED

SOFTWARE REQUIRED

Arduino IDE 1.8.5 (Programmable Platform for Arduino Boards)
Click to download the software: https://www.arduino.cc/en/Main/Software

PIN DESCRIPTION

HC SR04 ULTRASONIC SENSOR

**16*2 LCD DISPLAY**

10K POTENTIOMETER

CIRCUIT DESCRIPTION

Connection for LCD 16*2 Display with Arduino uno

*LCD 16 2**	Arduino
VSS	GND
VCC	5V
RS	PIN 11
R/W	PIN 10
E	PIN 9
DB4	PIN 2
DB5	PIN 3
DB6	PIN 4
	PIN 5
LED+ (A)	5V
LED- (K)	GND

Connection for HC SR-04 Ultrasonic Sensor with Arduino UNO

Ultrasonic Sensor	Arduino
VCC	5V
GND	GND
ECHO	Pin 12
TRIG	Pin 13

Connection for the potentiometer with LCD 16*2 and Breadboard

Potentiometer	LCD	Breadboard
Pin 1 (left)		5v
Pin 2(mid)	Pin 3
Pin 3 (right)		Gnd

CODE

Before coding, you have to install new ping library

https://drive.google.com/open?id=11gy_6v61-Eq0sAz8RJF_sn5Tl0g7z8Cj

Sketch > Include library > Manage Library > Search NEWPING library > download it

Or you download NewPing Library from other site.

https://drive.google.com/open?id=107vaWoBXZ8t6xtLExf7GQPetTcTP6glO

HC-SR04 Ultrasonic Sensor with LCD display

HC-SR04 Ultrasonic Sensor

VCC to Arduino 5V

GND to Arduino GND

Echo to Arduino pin 12

Trig to Arduino pin 13

LCD Display –

VSS to Arduino GND

VCC to Arduino 5V

VEE to Arduino GND

RS to Arduino pin 12

R/W to Arduino pin gnd

E to Arduino pin 11

DB4 to Arduino pin 10

DB5 to Arduino pin 9

DB6 to Arduino pin 8

DB7 to Arduino pin 7

LED+ to Arduino 5V

LED- to Arduino GND

#include <LiquidCrystal.h> //Load Liquid Crystal Library

LiquidCrystal LCD(12, 11, 10, 9, 8, 7); //Create Liquid Crystal Object called LCD (rs=12 E=11 D4=10 D5=9 D6=8 D7=7)

//Assigning pins of Arduino board to some variable

#define trigPin 2 //Sensor Echo pin connected to Arduino pin 13

#define echoPin 3 //Sensor Trip pin connected to Arduino pin 12

/* The setup() function is called when a sketch starts. It is used to initialize variables, pin modes,

start using libraries, etc. This function will only run once,

after each power up or reset of the Arduino board. */

void setup(){

pinMode(trigPin, OUTPUT); // OUTPUT means the “trigPin” which is actually pin no 13 is directed to give output instruction form the arduino.

pinMode(echoPin, INPUT); // OUTPUT means the “echoPin” which is actually pin no 12 is directed to give output instruction form the arduino.

LCD.begin(16, 2); //Tell Arduino to start your 16 column 2 row LCD

LCD.setCursor(0, 0); //Set LCD cursor to upper left corner, column 0, row 0

LCD.print(“Target Distance:”); //Print Message on First Row

}

void loop() {

long duration, distance;

digitalWrite(trigPin, LOW); // digitalWrite is used to write a HIGH or a LOW value to a digital pin (LOW is the voltage level).

delayMicroseconds(2);

digitalWrite(trigPin, HIGH); // digitalWrite is used to write a HIGH or a LOW value to a digital pin (HIGH is the voltage level).

delayMicroseconds(10);

digitalWrite(trigPin, LOW); // digitalWrite is used to write a HIGH or a LOW value to a digital pin (LOW is the voltage level).

duration = pulseIn(echoPin, HIGH);

distance = (duration / 2) / 29.1;

LCD.setCursor(0, 1); //Set cursor to first column of second row

LCD.print(” “); //Print blanks to clear the row

LCD.setCursor(0, 1); //Set Cursor again to first column of second row

LCD.print(distance); //Print measured distance

LCD.print(” cm”); //Print your units.

delay(250); //pause to let things settle

}

RUN SKETCH AND VERIFY OUTPUT

After compiling, uploading and running it

As far as the object goes far from the ultra-sonic sensor, Distance will be vary and measured distance will be show in LCD

in the Serial Monitor (Tools -> Serial Monitor or Ctrl + Shift + M) the sensor was sending correct data

Note: Must Set the baud Rate to 115200

Ping: 36 cm or the value shown in the serial monitor depends on the object distance from the ultra-sonic sensor.

You may also like…

Make a Digital voltmeter using 16*2 LCD Display interfacing with Arduino uno

Related products

Electronics Project LCD1602 Beginners Starter Kit for Compatible with Arduino Smd UNO R3

Crowtail- Deluxe Kit for Arduino V1.0 with Tutorial Compatible with Arduino

IDUINO RC522 RFID Starter Kit Compatible with Arduino UNO, Mega2560, Nano with ADXL345

2Wd Transparent Smart Motor Robot Car Chassis Kit with Arduino Board

Ultimate Uno R3 Kit compatible with ARDUIN0 IDE

Make a Gesture Based TV Remote Control Using Ultrasonic Sensor and IR Transmitter with Arduino Uno

How to Build a Robot Car at Home (Step-by-Step Guide for Beginners 2026)

Top 10 Arduino Projects for Beginners (Step-by-Step Guide 2026)

Best Robotics Kits for Beginners in India (2026 Guide)

Categories

My Account

Information