How To Make DIY Music Reactive LED using Arduino - Illuminate Your Sound

1const int soundSensorPin = A0; // Analog pin connected to the sound sensor
2const int ledPins[] = {2, 3, 4, 5, 6, 7, 8, 9, 10, 11}; // Digital pins connected to the LEDs
3
4void setup() {
5  pinMode(soundSensorPin, INPUT);
6  for (int i = 0; i < 10; i++) {
7    pinMode(ledPins[i], OUTPUT); // Set the LED pins as outputs
8  }
9  Serial.begin(9600); // Initialize serial communication for debugging
10}
11
12void loop() {
13  int soundValue = analogRead(soundSensorPin); // Read the analog input value
14  
15  for (int i = 0; i < 10; i++) {
16    int lowerBound = 70 + (i * 100);
17    int upperBound = lowerBound + 100;
18    
19    if (soundValue >= lowerBound && soundValue < upperBound) {
20      for (int j = 0; j <= i; j++) {
21        digitalWrite(ledPins[j], HIGH); // Turn on the LEDs up to the current index
22      }
23      for (int k = i + 1; k < 10; k++) {
24        digitalWrite(ledPins[k], LOW); // Turn off the remaining LEDs
25      }
26    }
27  }
28  
29}