A Brush Candle

abushcandle.ino

#include "Interval.h"
/*
  A Brush Candle - Hayley Hwang 
  for Lighting & Interactivity Class
  - NeoPixel RGBW x 1
  - Piezo Sensor x 1
  - 1mOhm x 1
*/

#include <Adafruit_NeoPixel.h>

Interval slowTimer;
Interval fastTimer;

#define PIN 6
const int numPixels = 7; // Adafruit Jewel
int val = 0;
int pval = 0;

Adafruit_NeoPixel strip = Adafruit_NeoPixel(numPixels, PIN, NEO_RGBW + NEO_KHZ800);

int alpha; // Current value of the pixels
int dir = 1; // Direction of the pixels... 1 = getting brighter, 0 = getting dimmer
int flip; // Randomly flip the direction every once in a while
int minAlpha = 25; // Min value of brightness
int maxAlpha = 100; // Max value of brightness
int alphaDelta = 5; // Delta of brightness between times through the loop

void setup() {
  Serial.begin(9600);
  strip.begin();
  strip.show();
  slowTimer.setInterval(slowCandle, 100);
  fastTimer.setInterval(fastCandle, 50);
}

void loop() {
  val = analogRead(A0);
  //  Serial.println(val);

  flip = random(32);
  if (flip > val) {
    dir = 1 - dir;
  }
  // Some example procedures showing how to display to the pixels:
  if (dir == 1) {
    alpha += alphaDelta;
  }
  if (dir == 0) {
    alpha -= alphaDelta;
  }
  if (alpha < minAlpha) {
    alpha = minAlpha;
    dir = 1;
  }
  if (alpha > maxAlpha) {
    alpha = maxAlpha;
    dir = 0;
  }


  //    if (val < 1) {
  //      candleSet(1);
  //    } else {
  //      candleSet(2);
  //    }

  int temp = pval + val; //To subtact the noise 0
  Serial.println(temp);
  if (temp > 3) {
    candleSet(2);
    // fastTimer.check();

  } else {
    candleSet(1);
    // slowTimer.check();
  }
  pval = val;
  
  strip.show();


}

void candleSet(int state) {

  if (state == 1) {
    //slow
    strip.setPixelColor(0, alpha / 5, alpha * 1.5, 0, 10); // orange - middle
    strip.setPixelColor(1, alpha / 3, alpha, 0, alpha ); // white - top
    strip.setPixelColor(4, 10, 0, 30); // cyan - bottom
    strip.setPixelColor(2, 0, 0, 0, 0);
    strip.setPixelColor(3, 0, 0, 0, 0);
    strip.setPixelColor(5, 0, 0, 0, 0);
    strip.setPixelColor(6, 0, 0, 0, 0);

  } else if (state == 2) {
    //Fast
    strip.setPixelColor(0,  alpha / 3, alpha, 0, alpha / 2); //middle
    strip.setPixelColor(4,  alpha / 10, alpha / 2, 0); //bottom
    strip.setPixelColor(1, 0, 0, 0, 0);
    strip.setPixelColor(5, 0, 0, 0, 0);
    strip.setPixelColor(2, 0, 0, 0, 0);
    strip.setPixelColor(6, 0, 0, 0, 0);
    strip.setPixelColor(3, 0, 0, 0, 0);
  }

  strip.show();
  //  Serial.println(alpha);
}



void slowCandle() {

  //slow
  strip.setPixelColor(0, alpha / 5, alpha * 1.5, 0, 10); // orange - middle
  strip.setPixelColor(1, alpha / 3, alpha, 0, alpha ); // white - top
  strip.setPixelColor(4, 10, 0, 30); // cyan - bottom
  strip.setPixelColor(2, 0, 0, 0, 0);
  strip.setPixelColor(3, 0, 0, 0, 0);
  strip.setPixelColor(5, 0, 0, 0, 0);
  strip.setPixelColor(6, 0, 0, 0, 0);
}

void fastCandle() {
  //Fast
  strip.setPixelColor(0,  alpha / 3, alpha, 0, alpha / 2); //middle
  strip.setPixelColor(4,  alpha / 10, alpha / 2, 0); //bottom
  strip.setPixelColor(1, 0, 0, 0, 0);
  strip.setPixelColor(5, 0, 0, 0, 0);
  strip.setPixelColor(2, 0, 0, 0, 0);
  strip.setPixelColor(6, 0, 0, 0, 0);
  strip.setPixelColor(3, 0, 0, 0, 0);
}