Create Disco light show setup using LEDs and Arduino UNO

disco_light_arduino.md

Create Disco Light show setup using LEDs and Arduino UNO

Requirements

• Arduino UNO Board
• Arduino IDE (any version can be used, version 1.8 was used here)
• LEDs (15 used here, any number can be used but total current limit of Arduino UNO is ~150mA)
• Jumper Wires
• Sound Sensor which has digital and analog out
• Breadboard

Pin Setup

Arduino UNO pin	Connected to
A0	Digital out (DO) of Sound Sensor
5V	+ of Sound Sensor
Ground (GND) besides 5V	Ground (GND) of Sound Sensor
Ground (GND) besides 13	Common ground in breadboard
pin 2 to 13 and A3 to A5 (total 15 pins)	+ve terminal of LEDs (-ve terminal of all connected to common ground of breadboard)

(more pins can be used for giving output as and when required)

Source Code

const int soundIn = A0;
const int ledA3 = A3;
const int ledA4 = A4;
const int ledA5 = A5;
const int led13 = 13;
const int led12 = 12;
const int led11 = 11;
const int led10 = 10;
const int led9 = 9;
const int led8 = 8;
const int led7 = 7;
const int led6 = 6;
const int led5 = 5;
const int led4 = 4;
const int led3 = 3;
const int led2 = 2;
const int led1 = 1;
const int led0 = 0;

void setup() {
  pinMode(soundIn, INPUT);
  pinMode(led13, OUTPUT);
  pinMode(led12, OUTPUT);
  pinMode(led11, OUTPUT);
  pinMode(led10, OUTPUT);
  pinMode(led9, OUTPUT);
  pinMode(led8, OUTPUT);
  pinMode(led7, OUTPUT);
  pinMode(led6, OUTPUT);
  pinMode(led5, OUTPUT);
  pinMode(led4, OUTPUT);
  pinMode(led3, OUTPUT);
  pinMode(led2, OUTPUT);
  pinMode(ledA5, OUTPUT);
  pinMode(ledA4, OUTPUT);
  pinMode(ledA3, OUTPUT);
}

void loop() {
  int value = digitalRead(soundIn);
  if(value == HIGH) {
    digitalWrite(led2, HIGH);
    digitalWrite(led3, HIGH);
    digitalWrite(led4, HIGH);
    digitalWrite(led5, HIGH);
    digitalWrite(led6, HIGH);
    digitalWrite(led7, HIGH);
    digitalWrite(led8, HIGH);
    digitalWrite(led9, HIGH);
    digitalWrite(led10, HIGH);
    digitalWrite(led11, HIGH);
    digitalWrite(led12, HIGH);
    digitalWrite(led13, HIGH);
    digitalWrite(ledA5, HIGH);
    digitalWrite(ledA4, HIGH);
    digitalWrite(ledA3, HIGH);
  } else {
    digitalWrite(led2, LOW);
    digitalWrite(led3, LOW);
    digitalWrite(led4, LOW);
    digitalWrite(led5, LOW);
    digitalWrite(led6, LOW);
    digitalWrite(led7, LOW);
    digitalWrite(led8, LOW);
    digitalWrite(led9, LOW);
    digitalWrite(led10, LOW);
    digitalWrite(led11, LOW);
    digitalWrite(led12, LOW);
    digitalWrite(led13, LOW);
    digitalWrite(ledA5, LOW);
    digitalWrite(ledA4, LOW);
    digitalWrite(ledA3, LOW);
  }
}

Steps

• Arrange the pins according to the pin setup given above.
• Adjust the code given above
• Upload the code given above to Arduino UNO board using Arduino IDE.
• Adjust the potentiometer of sound sensor according to you.
• Play the sound and enjoy the music with Disco Lights (LEDs) ;).

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