LED candle w/ ambient light sensor

led_candle.pde

#include <TrueRandom.h>

#define LED1 9
#define LED2 10
#define LED3 11
#define BUTTON 13

void setup() {
  pinMode(LED1, OUTPUT);
  pinMode(LED2, OUTPUT);
  pinMode(LED3, OUTPUT);
  pinMode(BUTTON, INPUT);
  Serial.begin(115200);
}

void loop() {
  int ambientLight = analogRead(0);
  Serial.print("Ambient Light Level: ");
  Serial.println(ambientLight);
  
  if (ambientLight < 400) {
    candleFlicker();
  } else {
    allOff();
  }
}

void candleFlicker() {
  long led1 = TrueRandom.random(100, 256);
  long led2 = TrueRandom.random(100, 256);
  long led3 = TrueRandom.random(100, 256);
  
  analogWrite(LED1, led1);
  analogWrite(LED2, led2);
  analogWrite(LED3, led3);
  delay(TrueRandom.random(40,180));
}

void allOff() {
  digitalWrite(LED1, LOW);
  digitalWrite(LED2, LOW);
  digitalWrite(LED3, LOW);
}

// vim: set ft=arduino sw=2 ts=2 :