Touch Sensor Based Door Lock System Using Arduino

Just Do Electronics April 10, 2020

Touch Sensor And Servo Motor Based Door Lock System Using Arduino

Circuit Diagram :-

Code :-

 
//Prateek
//www.prateeks.in

#include <Servo.h>
#include<LiquidCrystal.h>
LiquidCrystal lcd(12,11,10,9,8,7);
const int servoPin = 3; 
const int touchPin = 2; 
int ledPin = 13;
int touchState = 0;
int directionState = 0;
Servo myservo;
int pos = 0;

void setup() {
lcd.begin(16,2);
lcd.print(" Touch Based");
lcd.setCursor(0, 1);
lcd.print("Door Lock System");
myservo.attach(3);
pinMode(touchPin, INPUT);
pinMode(ledPin, OUTPUT);
}

void loop(){
touchState = digitalRead(touchPin);
if (directionState == 0){
if (touchState == HIGH) {
directionState = 1;
for(pos = 0; pos < 180; pos += 1)
digitalWrite(ledPin,1);
lcd.clear();
lcd.print("Status: Locked");
lcd.setCursor(0, 1);
lcd.print("Touch to Unlock");
{
myservo.write(pos);
delay(15); // waits 15ms to reach the position
}
}

} else if (directionState == 1) {
if (touchState == HIGH) {
directionState = 0;

for (pos = 180; pos>=1; pos -=1)
digitalWrite(ledPin,0);
lcd.clear();
lcd.print("Status: Unlocked");
lcd.setCursor(0, 1);
lcd.print("Touch to Lock");
{
myservo.write(pos);
delay(15);
}
}
}
}

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