Created
June 30, 2014 17:04
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Red, White, and Blue stripes with "glitter" flashes sketch (for FastLED v2.1 or later)
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#include<FastLED.h> | |
// Red, White, and Blue stripes with "glitter" flashes | |
// Mark Kriegsman, June 30, 2014 | |
// requires FastLED v2.1 or later | |
#define NUM_LEDS 30 | |
#define LED_PIN 5 | |
#define COLOR_ORDER GRB | |
#define BRIGHTNESS 64 | |
CRGB leds[NUM_LEDS]; | |
uint8_t data[ NUM_LEDS]; | |
void setup() { | |
delay(3000); | |
FastLED.addLeds<WS2811,LED_PIN,COLOR_ORDER>(leds,NUM_LEDS).setCorrection(TypicalLEDStrip); | |
FastLED.setBrightness(BRIGHTNESS); | |
} | |
void loop() { | |
fill_data_array(); | |
render_data_with_palette(); | |
add_glitter(); | |
FastLED.show(); | |
FastLED.delay(20); | |
} | |
void fill_data_array() | |
{ | |
static uint8_t startValue = 0; | |
startValue = startValue + 2; | |
uint8_t value = startValue; | |
for( int i = 0; i < NUM_LEDS; i++) { | |
data[i] = triwave8( value); // convert value to an up-and-down wave | |
value += 7; | |
} | |
} | |
CRGBPalette16 gPalette ( | |
CRGB::Black, CRGB::Black, | |
CRGB::Red, CRGB::Red, CRGB::Red, CRGB::Red, | |
CRGB::Gray, CRGB::Gray, CRGB::Gray, CRGB::Gray, | |
CRGB::Blue, CRGB::Blue, CRGB::Blue, CRGB::Blue, | |
CRGB::Black, CRGB::Black | |
); | |
void render_data_with_palette() | |
{ | |
for( int i = 0; i < NUM_LEDS; i++) { | |
leds[i] = ColorFromPalette( gPalette, data[i], 128, BLEND); | |
} | |
} | |
void add_glitter() | |
{ | |
int chance_of_glitter = 5; // percent of the time that we add glitter | |
int number_of_glitters = 3; // number of glitter sparkles to add | |
int r = random8(100); | |
if( r < chance_of_glitter ) { | |
for( int j = 0; j < number_of_glitters; j++) { | |
int pos = random16( NUM_LEDS); | |
leds[pos] = CRGB::White; // very bright glitter | |
} | |
} | |
} |
Dont worry i got it. This is from an older version of Fastled so rename BLEND to LINEARBLEND and it all works fine.
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I'm New to Arduino programming and trying out different effects, your examples are all really good and fairly easy to follow, however with this sketch when trying to compile this code i get the message
'BLEND' was not declared in this scope.
Can you help with the missing line? I'm guessing it will look something like this CRGB pixelColor = blend( startColor, endColor, amountOfBlending but i dont really get the syntax yet.