Circuits

Music Visualizer Cube with RGB LED Strip (WS2812B)

This is a Sound/ Music Reactive Cube with RGB LED Strip (WS2812B) inside of it, created as part of a group project in the MGA318 lesson.

I was responsible for the Coding part as well as the assembling and connection of the Arduino with the PC and the Arduino with the Sound Sensor and RGB LED Strip.

Hardware/ Software used

Circuit

Arduino Uno
Sound Sensor
Arduino Software
WS2812B LED Strip
Batteries
4 x AA Battery Holder
Cables

2 Final Codes

In the end, I created 2 codes, the 1st one (left side) is the one that we used for the final Music Visualizer Cube. It reacts to the sound levels and generates a different color to the whole RGB Led Strip based on the frequencies of the music. While the 2nd one (right side), it does the same thing, but with a slight difference, it generates the different colors in the middle of the RGB Led Strip and lets them travel at the end of it on both sides.

#include <FastLED.h> //FastLED library
#define NUM_LED 60  //number of LEDs in the strip
#define LED_PIN 5  //data pin on the arduino
#define BRIGHTNESS 255 //default brightness
#define updateLEDS 5 //number of LEDs to update
CRGB led[NUM_LED]; //array of LEDs
const int audioSignal = A0; //pin for the audio signal
int volumeLevel; //iniger for volume level
 
void setup() {
  pinMode(audioSignal, INPUT); //input pin for the audio signal
  Serial.begin(9600); //serial for debugging
  FastLED.addLeds<WS2812B, LED_PIN, GRB>(led, NUM_LED); //fastLED initalization
  FastLED.setBrightness(BRIGHTNESS); //set the default brightness
  delay(1000); //wait 1 sec
  resetLedState(); //turn off all the leds
}
 
void loop() { 
  audioRead(); //reap the audio level and map it
  Serial.println(volumeLevel); //Send volume level to the serial monitor
   
  //for loop to move all the LEDs down the strip 
  for (int i = NUM_LED - 1; i >= updateLEDS; i--) {
    led[i] = led[i - updateLEDS];
  }
   
  //for loop to set the first LED corresponding to the audio level
  for (int i = 0; i < updateLEDS; i++) {
    displayFilter(volumeLevel, i); //set the right colour magic
  }
  FastLED.show(); //updates the LED strip
  delay(20); //delay
}
 
void resetLedState() { //function to turn off all the LEDs
  for (int turnMeOff = 0; turnMeOff < 61; turnMeOff++) {
    led[turnMeOff] = CRGB(0, 0, 0);
  }
  FastLED.show();
}
 
void audioRead() { //function to read the audio  
  int rawValue = analogRead(audioSignal) * 2; //double the audio level
  volumeLevel = map(rawValue, 0, 1023, 0, 1000); //map it to 1000 values
  if (volumeLevel > 1000) { //if it's higher than 1000 it lowers it back to 1000
    volumeLevel = 1000;
  }
}
 
/* a lot of IF statements to set the right color.*/
void displayFilter(int volume, int color) {
  if (volume < 1) {
    led[color] = CRGB(0, 0, 0); //0, Off/Black
  }
  if (volume >= 1 && volume < 50) {
    led[color] = CRGB(255, 0, 0); //1-49, Red
  }
  if (volume >=50  && volume < 100) {
    led[color] = CRGB(255, 0, 85); //50-99, Pinkish Red
  }
  if (volume >= 100 && volume < 150) {
    led[color] = CRGB(255, 0, 170); //100-149, Pink
  }
  if (volume >= 150 && volume < 200) {
    led[color] = CRGB(0, 0, 255); //150-199, Blue
  }
  if (volume >= 200 && volume < 250) {
    led[color] = CRGB(170, 0, 255); //200-249, Purple
  }
  if (volume >= 250 && volume < 300) {
    led[color] = CRGB(85, 0, 255); //250-299, Purplish Blue
  }
  if (volume >= 300 && volume < 350) {
    led[color] = CRGB(0, 20, 255); //300-349, Blue
  }
  if (volume >= 350 && volume < 400) {
    led[color] = CRGB(20, 85, 255); //350-399, Lighter Blue
  }
  if (volume >= 400 && volume < 450) {
    led[color] = CRGB(0, 255, 0); //400-449, Green
  }
  if (volume >= 450 && volume < 500) {
    led[color] = CRGB(0, 255, 255); //450-499, Cyan
  }
  if (volume >= 500 && volume < 550) {
    led[color] = CRGB(0, 255, 170); //500-549, Bright-Pale Green
  }
  if (volume >= 550 && volume < 600) {
    led[color] = CRGB(0, 255, 85); //550-599, Neon Green
  }
  if (volume >= 600 && volume < 650) {
    led[color] = CRGB(255, 0, 255); //600-649, Bright Pink
  }
  if (volume >= 650 && volume < 700) {
    led[color] = CRGB(85, 255, 0); //650-699, A bit Lighter Green
  }
  if (volume >= 700 && volume < 750) {
    led[color] = CRGB(170, 255, 0); //700-749, Yellowish Green
  }
  if (volume >= 750 && volume < 800) {
    led[color] = CRGB(255, 255, 0); //750-799, Yellow
  }
  if (volume >= 800 && volume < 850) {
    led[color] = CRGB(255, 170, 0); //800-849, Pale Orange
  }
  if (volume >= 850 && volume < 1000) {
    led[color] = CRGB(0, 0, 255); //850-999, Blue  
  }
  if (volume >= 1000) {
    led[color] = CRGB(255, 255, 255); //1000, White
  }
}

#include <FastLED.h>    //FastLED library
int r=152;
int g=0;
int b=10;
#define LED_PIN     5    //data pin on the arduino
#define NUM_LEDS    60  //number of LEDs in the strip
CRGB leds[NUM_LEDS];
CRGB led[NUM_LEDS];
int s=0;
 
void setup() {
  FastLED.addLeds<WS2812B, LED_PIN, GRB>(leds, NUM_LEDS);
  for (int i = NUM_LEDS/2; i >= 0; i--) 
  {
     leds[i] = CRGB ( r,g,b);
     leds[NUM_LEDS-i] = CRGB (r,g,b );
     delay(40);
    FastLED.show();
  }
  Serial.begin(9600);
   pinMode(A0,INPUT);
}
 
void loop()
{
  s=analogRead(A0);
  s=s*2;
  Serial.println(s);
  delay(50);
   
  if((s>650)&&(s<=700)) // Light Green
  {
    leds[(NUM_LEDS/2)-1]=CRGB (70, 255, 80);
    leds[NUM_LEDS/2]=CRGB (70, 255, 80);
  }
   else if((s>600)&&(s<=650)) //Pink
  {
    leds[(NUM_LEDS/2)-1]=CRGB (255, 150, 200);
    leds[NUM_LEDS/2]=CRGB (255, 150, 200);
  }
  else if((s>550)&&(s<=600)) //Yellow
  {
    leds[(NUM_LEDS/2)-1]=CRGB (255, 255, 0);
    leds[NUM_LEDS/2]=CRGB (255, 255, 0);
  }
  else if((s>500)&&(s<=550)) //Blue
  {
    leds[(NUM_LEDS/2)-1]=CRGB (0, 0, 255);
    leds[NUM_LEDS/2]=CRGB (0, 0, 255);
  }
  else if((s>450)&&(s<=500)) //Dark Yellow
  {
    leds[(NUM_LEDS/2)-1]=CRGB (153, 153, 0);
    leds[NUM_LEDS/2]=CRGB (153, 153, 0);
  }
  else if((s>400)&&(s<=450)) //Purple
   {
     leds[(NUM_LEDS/2)-1]=CRGB (255, 50, 255);
    leds[NUM_LEDS/2]=CRGB (255, 50, 255);
   }
   else if((s>350)&&(s<=400)) //Dark Blue
  {
    leds[(NUM_LEDS/2)-1]=CRGB (10, 25, 217);
    leds[NUM_LEDS/2]=CRGB (10, 25, 217);
  }
   else if((s>300)&&(s<=350)) //Darker Blue
   {
     leds[(NUM_LEDS/2)-1]=CRGB (50, 50, 150);
    leds[NUM_LEDS/2]=CRGB (50, 50, 150);
   }
   else if((s>250)&&(s<=300)) //Red
   {
     leds[(NUM_LEDS/2)-1]=CRGB (230, 0, 10);
    leds[NUM_LEDS/2]=CRGB (230, 0, 10);
   }
  else if((s>200)&&(s<=250)) //Green
   {
     leds[(NUM_LEDS/2)-1]=CRGB (0, 160, 0);
    leds[NUM_LEDS/2]=CRGB (0, 160, 0);
   }
   else if((s>150)&&(s<=200)) //Black
   {
     leds[(NUM_LEDS/2)-1]=CRGB (1, 0, 1);
    leds[NUM_LEDS/2]=CRGB (1, 0, 1);
   }
  else
  {
     leds[(NUM_LEDS/2)-1] = CRGB ( r,s-100,b);
     leds[NUM_LEDS/2] = CRGB ( r,s-100,b);
  }
    for (int i = 0; i <= ((NUM_LEDS/2)-2); i++) 
  {
     leds[i] = leds[i+1];
     leds[NUM_LEDS-1-i] = leds[(NUM_LEDS)-i-2]; 
  }
 FastLED.show();
 delay(25);
}