งาน13

#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);
}

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(20)Arduino Projects: Arduino Decibel Meter(อ้างอิงhttp://tutorial45.com/arduino-projects-arduino-decibel-meter/)

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