int pwmPin3 = 3;
int mPin4 = 4;
int mPin5 = 5;
int poPin = A0;
int poVal;
int BZ = 10;

void setup() {
  pinMode(mPin4, OUTPUT);
  pinMode(mPin5, OUTPUT);
  pinMode(BZ, OUTPUT);
}

void loop() {
  poVal = analogRead(poPin);
  poVal = map(poVal, 0, 1023, 0, 255);
  analogWrite(pwmPin3, poVal);
  digitalWrite(mPin4, HIGH);
  digitalWrite(mPin5, LOW);

  int value = analogRead(poVal);

  if(value >800){
    tone(BZ, 100);
}
  else {
    noTone(BZ);
}

  }

한국말로 소스코드 해석해주시면 너무 감사하겠습니다 ㅠㅠ 살려주세요,,,,,

BZ는 부저,,