xmaslights-2.ino

#include <FastLED.h>

#define LED_PIN     1
#define NUM_LEDS    50
#define BRIGHTNESS  255
#define LED_TYPE    WS2811
#define COLOR_ORDER GRB
CRGB leds[NUM_LEDS];

CRGBPalette16 currentPalette;
TBlendType    currentBlending;

void setup() {
    delay( 3000 ); // power-up safety delay
    FastLED.addLeds<LED_TYPE, LED_PIN, COLOR_ORDER>(leds, NUM_LEDS).setCorrection( TypicalLEDStrip );
    FastLED.setBrightness(  BRIGHTNESS );
    
    currentPalette = RainbowColors_p;
    currentBlending = LINEARBLEND;
}


void loop()
{
    ChangePaletteFromLight();
    
    static uint8_t startIndex = 0;
    startIndex = startIndex + 1; /* motion speed */
    
    FillLEDsFromPaletteColors( startIndex);
    
    FastLED.show();
    delay(100);// / UPDATES_PER_SECOND);
}

void FillLEDsFromPaletteColors( uint8_t colorIndex)
{
    uint8_t brightness = 16;
    
    for( int i = 0; i < NUM_LEDS; i++) {
        leds[i] = ColorFromPalette( currentPalette, colorIndex, brightness, currentBlending);
        colorIndex += 3;
    }
}

// We're going to use built-in palettes, but you can define your own (look at the ColorPalette
// tutorial for inspiration). To add more options, just copy the 2nd if statement and change
// the numbers and palettes. Presets worth trying include:
// RainbowStripeColors_p, LavaColors_p, ForestColors_p and PartyColors_p.

void ChangePaletteFromLight()
{
  int ldrStatus = 0;

  ldrStatus = analogRead(A1);

  if (ldrStatus < 200){ currentPalette = RainbowColors_p; currentBlending = LINEARBLEND; } // Use original blinkenlight palette in the dark.
  if (ldrStatus > 199 && ldrStatus < 400){ currentPalette = OceanColors_p; currentBlending = LINEARBLEND; } // Blue
  if (ldrStatus > 399){ currentPalette = CloudColors_p; currentBlending = LINEARBLEND; } // Blue
  
}