Three_sin_demo

/* three_sin demo

By: Andrew Tuline

Date: Oct, 2014

3 sine waves, one for each colour. I'm already doing a lot with 2 sine waves, so I didn't take this far.

FastLED 2.1 is available at https://github.com/FastLED/FastLED/tree/FastLED2.1

Note: If you receive compile errors (as I have in the Stino add-on for Sublime Text), set the compiler to 'Full Compilation'.

*/


#include "FastLED.h"                                          // FastLED library. Preferably the latest copy of FastLED 2.1.

// Fixed definitions cannot change on the fly.
#define LED_DT 13                                             // Serial data pin for WS2812B or WS2801
#define COLOR_ORDER GRB                                       // Are they RGB, GRB or what??
#define LED_TYPE WS2812B                                       // What kind of strip are you using?
#define NUM_LEDS 24                                           // Number of LED's

// Initialize changeable global variables.
uint8_t max_bright = 255;                                      // Overall brightness definition. It can be changed on the fly.

struct CRGB leds[NUM_LEDS];                                   // Initialize our LED array.


// Initialize global variables for sequences
uint8_t thisdelay = 8;                                        // A delay value for the sequence(s)

int wave1=0;
int wave2=0;
int wave3=0;

uint8_t inc1 = 1;
uint8_t inc2 = 1;
uint8_t inc3 = -3;

uint8_t lvl1 = 80;
uint8_t lvl2 = 80;
uint8_t lvl3 = 80;

uint8_t mul1 = 20;
uint8_t mul2 = 25;
uint8_t mul3 = 22;



void setup() {
  Serial.begin(57600);
  LEDS.addLeds<LED_TYPE, LED_DT, COLOR_ORDER>(leds, NUM_LEDS).setCorrection(TypicalLEDStrip);
  FastLED.setBrightness(max_bright);
  set_max_power_in_volts_and_milliamps(5, 500);               // FastLED 2.1 Power management set at 5V, 500mA

  random16_set_seed(4832);                                     // Awesome randomizer (which we don't yet need here.)
  random16_add_entropy(analogRead(2));

} // setup()



void loop () {
  three_sin();                                                  // Improved method of using non-blocking delay
  show_at_max_brightness_for_power();                         // Power managed display of LED's
  delay_at_max_brightness_for_power(thisdelay*2.5);
  LEDS.countFPS();
} // loop()



void three_sin() {
  wave1 += inc1;
  wave2 += inc2;
  wave3 += inc3;
  for (int k=0; k<NUM_LEDS; k++) {
    leds[k].r = qsub8(quadwave8(mul1*k + wave1), lvl1);         // Another fixed frequency, variable phase sine wave with lowered level
  //  leds[k].g = qsub8(quadwave8(mul2*k + wave2), lvl2);         // A fixed frequency, variable phase sine wave with lowered level
    //leds[k].b = qsub8(quadwave8(mul3*k + wave3), lvl3);         // A fixed frequency, variable phase sine wave with lowered level
  }
} // three_sin()