งานปฏิบัติ 14

wiring diagram






Code 1

#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27,16,2);

int PIRpin = 8;

void setup() 

{ 

  lcd.begin();

  pinMode(PIRpin,INPUT);

  lcd.home();

  lcd.print("Waiting for PIR");

  delay(10000);       

  lcd.clear();

}

void loop()

{ 

  int x = digitalRead(PIRpin);

  lcd.home();

  lcd.print("PIR = ");

  lcd.print(x);

  delay(100);

}