ส่งงานครั้งที่11

Automatic Room Light Controller with Bidirectional Visitor Counter

Components

• Arduino UNO
• Relay (5v)
• Resisters
• IR Sensor module
• 16x2 LCD display
• Bread Board
• Connecting Wires
• Led
• BC547 Transistor

CODE

#include<LiquidCrystal.h>
LiquidCrystal lcd(13,12,11,10,9,8);

#define in 14
#define out 19
#define relay 2

int count=0;

void IN()
{
    count++;
    lcd.clear();
    lcd.print("Person In Room:");
    lcd.setCursor(0,1);
    lcd.print(count);
    delay(1000);
}

void OUT()
{
  count--;
    lcd.clear();
    lcd.print("Person In Room:");
    lcd.setCursor(0,1);
    lcd.print(count);
    delay(1000);
}

void setup()
{
  lcd.begin(16,2);
  lcd.print("Visitor Counter");
  delay(2000);
  pinMode(in, INPUT);
  pinMode(out, INPUT);
  pinMode(relay, OUTPUT);
  lcd.clear();
  lcd.print("Person In Room:");
  lcd.setCursor(0,1);
  lcd.print(count);
}

void loop()
{  
  
  if(digitalRead(in))
  IN();
  if(digitalRead(out))
  OUT();
  
  if(count<=0)
  {
    lcd.clear();
    digitalWrite(relay, LOW);
    lcd.clear();
    lcd.print("Nobody In Room");
    lcd.setCursor(0,1);
    lcd.print("Light Is Off");
    delay(200);
  }
  
  else
    digitalWrite(relay, HIGH);
  

}