How To Make Distance measurement Device using Ultrasonic sensor and LCD I2C display - Simple circuit

  Distance measurement Device using Ultrasonic sensor and LCD I2C display

Here’s an Arduino code that displays the distance readings from an ultrasonic sensor (HC-SR04) on an I2C LCD display in both inches and centimeters.

Components Needed:

• Arduino Uno
• Ultrasonic Sensor (HC-SR04)
• I2C LCD Display (16x2)
• Jumper wires
• Breadboard

Wiring:

• Ultrasonic Sensor:
  • VCC to 5V
  • GND to GND
  • Trig to Pin 9
  • Echo to Pin 8
• I2C LCD Display:
  • VCC to 5V
  • GND to GND
  • SDA to A4
  • SCL to A5

Video Link: - Click Here For Video

Distance measurement Device using Ultrasonic sensor and LCD I2C display simple Circuit: -

Distance measurement Device using Ultrasonic sensor and LCD I2C display Arduino Programming: -

Arduino IDE Program

#include <Wire.h>

#include <LiquidCrystal_I2C.h>

// Initialize the LCD with I2C address 0x27 (can be 0x3F for some displays), 16 columns and 2 rows

LiquidCrystal_I2C lcd(0x27, 16, 2);

// Define pin connections for Ultrasonic Sensor

const int trigPin = 9;

const int echoPin = 8;

// Variables to store the distance

long duration;

float distanceCm;

float distanceInch;

void setup() {

  // Initialize the serial communication

  Serial.begin(9600);

  // Initialize the LCD

  lcd.init();

  lcd.backlight();

  // Set the trigPin as an OUTPUT and echoPin as an INPUT

  pinMode(trigPin, OUTPUT);

  pinMode(echoPin, INPUT);

  // Print initial message on the LCD

  lcd.setCursor(0, 0);

  lcd.print("Distance:");

}

void loop() {

  // Clear the trigPin by setting it LOW

  digitalWrite(trigPin, LOW);

  delayMicroseconds(2);

  // Trigger the sensor by setting the trigPin HIGH for 10 microseconds

  digitalWrite(trigPin, HIGH);

  delayMicroseconds(10);

  digitalWrite(trigPin, LOW);

  // Read the echoPin and calculate the duration it takes for the signal to return

  duration = pulseIn(echoPin, HIGH);

  // Calculate the distance in centimeters and inches

  distanceCm = (duration * 0.0343) / 2;

  distanceInch = distanceCm / 2.54;

  // Display the distance on the LCD

  lcd.setCursor(0, 1);  // Set cursor to second row

  lcd.print("CM: ");

  lcd.print(distanceCm);

  lcd.print("  ");

  lcd.setCursor(8, 1);  // Set cursor to second row, 8th column

  lcd.print("In: ");

  lcd.print(distanceInch);

  // Print the distance on the Serial Monitor

  Serial.print("Distance in CM: ");

  Serial.print(distanceCm);

  Serial.print(" | Distance in Inches: ");

  Serial.println(distanceInch);

  // Small delay before taking the next reading

  delay(500);

}

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Explanation:

1. Ultrasonic Sensor: The HC-SR04 sensor sends an ultrasonic pulse and listens for its echo. Based on the time it takes for the pulse to return, the distance is calculated.
2. Distance Calculation:
   • Distance in centimeters = (duration * 0.0343) / 2
   • Distance in inches = distanceCm / 2.54
3. LCD Display: The distance is shown on the I2C LCD in both centimeters and inches.

Libraries Required:

• LiquidCrystal_I2C: This is required for the I2C LCD. You can install it through the Arduino Library Manager.

Let me know if you'd like any adjustments!

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