// Forum: https://forum.arduino.cc/t/hello-i-would-really-appreciate-help-for-my-beginner-school-project/1256909/
// This Wokwi project: https://wokwi.com/projects/397229860331694081

const int ledPinR = 11;
const int ledPinG = 10;
const int ledPinB = 9;
const int buzzPin = 3;
const int pirPin  = 2;

void setup() 
{
  pinMode(ledPinR, OUTPUT);
  pinMode(ledPinG, OUTPUT);
  pinMode(ledPinB, OUTPUT);

  pinMode(buzzPin, OUTPUT);
  pinMode(pirPin, INPUT);

  // Test if the Serial Monitor is working
  Serial.begin(115200);
  Serial.print("Testing the parts...");

  // Test if the buzzer is working
  for(int i=500; i<4000; i+=i/30)
  {
    tone(buzzPin, i);
    delay(40);
  }
  noTone(buzzPin);

  // Test if the RGB led is working
  for(int i=0; i<4; i++)
  {
    digitalWrite(ledPinR,HIGH);
    delay(400);
    digitalWrite(ledPinR,LOW);
    digitalWrite(ledPinG,HIGH);
    delay(400);
    digitalWrite(ledPinG,LOW);
    digitalWrite(ledPinB,HIGH);
    delay(400);
    digitalWrite(ledPinB,LOW);
  }

  Serial.println(" Ready");
  Serial.println("Click on the PIR sensor and then click on the button \"Simulate motion\"");
}

void loop() 
{
  int pirValue = digitalRead(pirPin);
  if(pirValue == HIGH)
  {
    Serial.print("█"); // UTF-8 character, full block
  }
  else
  {
    Serial.print("▁"); // UTF-8 character, lower 1/8
  }

  delay(250);
}