Innovation Lab #12: Sound Detector with RGB LED

A Bongilcheon High School Innovation Lab project.

BeginnerShowcase (no instructions)15 minutes3,345

Innovation Lab #12: Sound Detector with RGB LED

Things used in this project

Hardware components

Arduino UNO

Breadboard (generic)

SparkFun Sound Detector

RGB Diffused Common Cathode

Software apps and online services

Arduino IDE

Story

Innovation Lab (170821)

I learned how to change the color of an LED by measuring sound with a sound detector. Depending on the values of the sound, the LED color changes to blue, green or red.

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Code

Sound Detector

int red = 11;
int green = 10;
int blue = 9;
int volum;

void setup() {
  Serial.begin(9600);
  pinMode(red, OUTPUT);
  pinMode(green, OUTPUT);
  pinMode(blue, OUTPUT);
}

void loop() {
  volum = analogRead(A0);
  Serial.println(volum);
  delay(100);

  if (volum <= 50) {
    digitalWrite(red, LOW);
    digitalWrite(green, LOW);
    digitalWrite(blue, HIGH);
  }
  
  else if(volum <= 52) {
    digitalWrite(red, LOW);
    digitalWrite(green, HIGH);
    digitalWrite(blue, LOW);
  }

  else if(volum <= 55) {
    digitalWrite(red, HIGH);
    digitalWrite(green, LOW);
    digitalWrite(blue, LOW);
  }
}