Loud Pumpkin with Circuit Playground

It's October. Pumpkins are filling the grocery stores. This means one thing: Halloween is coming!

I'm told that I'm supposed to wear a costume on Halloween. However, I'm too broke to buy an outfit for just one day, so I'm going to wear a colorful circuit board instead. This year, I'm going to become a pumpkin. Well, sorta.

The board is an Adafruit Circuit Playground Express. It packs 10 NeoPixel LEDs that can display any color, four sensors, and a few buttons. My code uses the microphone sensor to measure how loud is the environment. Based on measured sound pressure, it then lights up a number of NeoPixels to #ff7619 the "pumpkin color".

#include <Adafruit_CircuitPlayground.h>

void setup() {
  CircuitPlayground.begin();
}

void loop() {
  float sp = CircuitPlayground.mic.soundPressureLevel(100);
  int peak = map(sp, 56, 90, 0, 9);

  CircuitPlayground.strip.clear();
  for (int i = 0; i <= peak; ++i) {
    CircuitPlayground.strip.setPixelColor(i, 0xff7619);
  }
  CircuitPlayground.strip.show();
}

Tags: Arduino