Paweł Węgrzyniak

1// Pins2const int micPin = A0;3const int redPin = 3;4const int greenPin = 5;5const int bluePin = 6;6 7// Sound calibration (adjust!)8const int noiseFloor = 520;   // silence level9const int maxSound = 750;     // loud sound10 11// Smoothing12float smoothLevel = 0;13const float smoothing = 0.06;14 15void setup() {16  pinMode(redPin, OUTPUT);17  pinMode(greenPin, OUTPUT);18  pinMode(bluePin, OUTPUT);19}20 21void loop() {22  int micValue = analogRead(micPin);23 24  // Remove noise floor25  int soundLevel = abs(micValue - noiseFloor);26  soundLevel = constrain(soundLevel, 0, maxSound - noiseFloor);27 28  // Smooth animation29  smoothLevel = smoothLevel * (1 - smoothing) + soundLevel * smoothing;30 31  // Normalize 0–25532  int level = map(smoothLevel, 0, maxSound - noiseFloor, 0, 255);33  level = constrain(level, 0, 255);34 35  // Color mapping36  int r, g, b;37 38  if (level < 85) {39    // Blue → Green40    r = 0;41    g = map(level, 0, 85, 0, 255);42    b = map(level, 0, 85, 255, 0);43  } else if (level < 170) {44    // Green → Yellow45    r = map(level, 85, 170, 0, 255);46    g = 255;47    b = 0;48  } else {49    // Yellow → Red50    r = 255;51    g = map(level, 170, 255, 255, 0);52    b = 0;53  }54 55  analogWrite(redPin, r);56  analogWrite(greenPin, g);57  analogWrite(bluePin, b);58 59  delay(5);60}