Northern Lights Wall Art

1// Northern Lights
2// By: Max Scholtes
3// Here I modified the multiple-strips  array example from the FASTLED examples file to program the 3 LED strips.
4//  The 3 separate strips are put into a single array so they are treated as one, single  strip.
5
6  #include <FastLED.h>
7  
8  #define LED_TYPE         WS2812B
9  #define COLOR_ORDER      GRB
10  #define NUM_STRIPS       3
11  #define NUM_LEDS_STRIP_1  17
12  #define NUM_LEDS_STRIP_2 17
13  #define NUM_LEDS_STRIP_3 32
14  #define  NUM_LEDS         66
15  CRGB leds[NUM_LEDS];
16
17  #define BRIGHTNESS  200 //adjust  brightness
18  #define UPDATES_PER_SECOND 25 // "speed" the lights flow
19//  CRGBPalette16 currentPalette;
20  CRGBPalette16 currentPalette;
21  TBlendType    currentBlending;
22
23  extern CRGBPalette16 myRedWhiteBluePalette;
24  extern  const TProgmemPalette16 myRedWhiteBluePalette_p PROGMEM;
25
26
27void setup()
28{  
29  Serial.begin(9600);
30  // STRIP 1
31  // tell FastLED there's 17 NEOPIXEL  leds on pin 3, starting at index 0 in the led array
32  FastLED.addLeds<LED_TYPE,  3, COLOR_ORDER>(leds, 0, NUM_LEDS_STRIP_1).setCorrection(TypicalLEDStrip);
33
34  // STRIP 2
35  // tell FastLED there's 17 NEOPIXEL leds on pin 5, starting at  index 17 in the led array
36  FastLED.addLeds<LED_TYPE, 5, COLOR_ORDER>(leds, 17,  NUM_LEDS_STRIP_2).setCorrection(TypicalLEDStrip);
37
38  // STRIP 3
39  // tell  FastLED there's 32 NEOPIXEL leds on pin 6, starting at index 34 in the led array
40  FastLED.addLeds<LED_TYPE, 6, COLOR_ORDER>(leds, 34, NUM_LEDS_STRIP_3).setCorrection(TypicalLEDStrip);
41
42  FastLED.setBrightness(BRIGHTNESS);
43  currentBlending = LINEARBLEND;
44
45  AuroraPalette_green_blue_purple();
46}
47
48void loop()
49{
50  static uint8_t  startIndex = 0;
51  startIndex = startIndex + 1; /* motion speed */
52
53  FillLEDsFromPaletteColors(  startIndex);
54    
55  FastLED.show();
56  FastLED.delay(1000 / UPDATES_PER_SECOND);
57}
58
59void  FillLEDsFromPaletteColors( uint8_t colorIndex) //Fills LED's from palette
60{
61    uint8_t brightness = 255;
62    
63    for( int i = 0; i < NUM_LEDS; i++)  {
64        leds[i] = ColorFromPalette( currentPalette, colorIndex, brightness,  currentBlending);
65        colorIndex += 3;
66    }
67}
68
69void AuroraPalette_green_blue_purple()  // Custom color palette for LED's. Here, you can experiment with your own colors  for the LED's.
70{
71    // This is where you can make up your own colors to play  with. Look-up 'CHSV' to understand what the color's 3 values represent.
72    CRGB  purple = CHSV( 195, 255, 255);
73    CRGB green  = CHSV( 100, 255, 255);
74    CRGB  graqua  = CHSV( 114, 255, 255);
75    CRGB aqua  = CHSV( 128, 255, 255);
76    CRGB  teal = CHSV( 136, 255, 255);
77    CRGB blue = CHSV( 160, 255, 255);
78    CRGB  black  = CRGB::Black;
79    
80    currentPalette = CRGBPalette16( // This is  where you decide the order of the colors you created above. They are assigned to  16 LED's at a time, in the following order:
81                                   green,  green,  aqua,  aqua,
82                                   blue,   blue,   purple,    purple,
83                                   blue, blue, aqua,  aqua,
84                                  green,   green,   aqua,  aqua);
85}
86