int ledPin = 45;
int buttonPin = 48;
int reading = 0;
 
boolean buttonState;
boolean lastState;
boolean state = LOW;
 
 void setup() {
  pinMode (buttonPin,INPUT);
  pinMode (ledPin,OUTPUT);
  Serial.begin(115200); // เริ่มการสื่อสาร Serial
}
 
void loop() {
  reading = digitalRead(buttonPin);
 
  if ( reading == LOW && lastState == HIGH ) {
    delay (10);
    Serial.println("สวิทช์ถูกปล่อย");
    if (digitalRead(buttonPin) == LOW){
      state = !state;
      Serial.println("สวิทช์ถูกกด");
      }
  }
 
  digitalWrite(ledPin,state);
  lastState = reading;
 
}