vijendra kumar
Published © CC BY-NC

How to make Arduino based Automatic Door Opening

How to make Arduino based Automatic Door Opening Using HC SR 04

AdvancedFull instructions provided2 hours15,893
How to make Arduino based Automatic Door Opening

Things used in this project

Hardware components

RGB Backlight LCD - 16x2
Adafruit RGB Backlight LCD - 16x2
×1
Ultrasonic Sensor - HC-SR04 (Generic)
Ultrasonic Sensor - HC-SR04 (Generic)
×1
Buzzer
Buzzer
×1
Amazon Web Services DC Motor
×1
Arduino UNO & Genuino UNO
Arduino UNO & Genuino UNO
×1
Amazon Web Services motor shield
×1
Jumper wires (generic)
Jumper wires (generic)
×1

Software apps and online services

Arduino IDE
Arduino IDE

Story

Read more

Custom parts and enclosures

Connect hardware

Connect hardware
Automatic door opening system aokbmorq5c

Schematics

Connect Hardware

Connect Hardware
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Code

Arduino code

Arduino
Code for Automatic Door Opening Using Ultrasonic sensor HRSC04
#include <LiquidCrystal.h>

LiquidCrystal lcd(12, 11, 5, 8, 9, 1);

const int trigPin = 7; 
const int echoPin = 4;
const int mt_En_Pin1  = 2; 
const int mt_IN1_Pin2  = 3; 
const int mt_IN2_Pin3  = 6;
int buzz = 10;

long duration;
int distance;

void setup()
{
lcd.clear();
lcd.begin(16, 2);
lcd.print("WELCOME");

pinMode(trigPin, OUTPUT);
pinMode(echoPin, INPUT);
pinMode(mt_En_Pin1, OUTPUT);
pinMode(mt_IN1_Pin2, OUTPUT);
pinMode(mt_IN2_Pin3, OUTPUT);
Serial.begin(9600);
pinMode(buzz, OUTPUT);
}

void loop() 
{
digitalWrite(trigPin, LOW);
delayMicroseconds(2);
digitalWrite(trigPin, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin, LOW);
duration = pulseIn(echoPin, HIGH);

distance= duration*0.034/2;
if(distance <= 5)
{
    digitalWrite(13, HIGH);
    delay(1000);
    digitalWrite(mt_En_Pin1, HIGH);
    analogWrite(mt_IN1_Pin2,50);
    analogWrite(mt_IN2_Pin3, 0);
    delay(2000);
    analogWrite(mt_IN1_Pin2, 0);
    analogWrite(mt_IN2_Pin3, 0);
    delay(1000);
    
    tone(buzz, 1000);
    delay(1000);
    tone(buzz, 1000);
    delay(1000);
    noTone(buzz);
    delay(3000);
    
    lcd.clear();
    lcd.setCursor(0,1);
    lcd.print("Please Enter");
    delay(1000);
  
    analogWrite(mt_IN1_Pin2,0);
    analogWrite(mt_IN2_Pin3,50);
    delay(3000);
}

else
{
    digitalWrite(13, LOW);
    digitalWrite(mt_En_Pin1, LOW);
    analogWrite(mt_IN1_Pin2,50);
    analogWrite(mt_IN2_Pin3, 0);    
}

}

Credits

vijendra kumar

vijendra kumar

2 projects • 12 followers
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