90 lines
2.5 KiB
Arduino
90 lines
2.5 KiB
Arduino
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//***************************************************************
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// Gradient palette that can have colors or anchor points updated on the fly.
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// This is based on some code from Mike Brown.
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// https://plus.google.com/u/0/102054795236178256184/posts/UWbQBcmKDdU?cfem=1
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//
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// Randomly picks start and end colors. Colors in middle remain
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// constant, but for fun their anchor points are randomly picked.
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//
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// More info on gradient palettes here:
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// https://github.com/FastLED/FastLED/wiki/Gradient-color-palettes
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//
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// Marc Miller, May 2017
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//***************************************************************
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#include "FastLED.h"
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#if FASTLED_VERSION < 3001000
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#error "Requires FastLED 3.1 or later; check github for latest code."
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#endif
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#define LED_TYPE LPD8806
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#define DATA_PIN 11
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#define CLOCK_PIN 13
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#define NUM_LEDS 32
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#define COLOR_ORDER GRB
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CRGB leds[NUM_LEDS];
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#define BRIGHTNESS 255
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CRGBPalette256 currentPalette;
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CHSV hsv;
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CRGB rgb;
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//---------------------------------------------------------------
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void setup() {
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Serial.begin(115200);
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delay(500); // startup delay
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//FastLED.addLeds<LED_TYPE, DATA_PIN, COLOR_ORDER>(leds, NUM_LEDS).setCorrection(TypicalLEDStrip);
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FastLED.addLeds<LED_TYPE, DATA_PIN, CLOCK_PIN, COLOR_ORDER>(leds, NUM_LEDS).setCorrection(TypicalLEDStrip);
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FastLED.setBrightness(BRIGHTNESS);
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}
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//---------------------------------------------------------------
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void loop () {
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EVERY_N_SECONDS(2){
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newGradientPalette();
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}
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FastLED.show();
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FastLED.delay(100);
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}
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//---------------------------------------------------------------
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void newGradientPalette(){
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uint8_t xyz[16]; // Needs to be 4 times however many colors are being used.
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// 3 colors = 12, 4 colors = 16, etc.
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hsv = CHSV(random8(), 255, 255); // pick random hue
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hsv2rgb_rainbow( hsv, rgb); // convert to R,G,B
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xyz[0] = 0; // anchor of first color - must be zero
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xyz[1] = rgb.r;
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xyz[2] = rgb.g;
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xyz[3] = rgb.b;
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xyz[4] = random8(48,118); // random anchor point for second color
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xyz[5] = 255;
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xyz[6] = 0;
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xyz[7] = 0;
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xyz[8] = random8(138,225); // random anchor point for third color
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xyz[9] = 0,
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xyz[10] = 255;
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xyz[11] = 0;
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hsv = CHSV(random8(), 255, 255); // pick random hue
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hsv2rgb_rainbow( hsv, rgb); // convert to R,G,B
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xyz[12] = 255; // anchor of last color - must be 255
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xyz[13] = rgb.r;
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xyz[14] = rgb.g;
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xyz[15] = rgb.b;
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currentPalette = xyz;
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for (int p = 0; p < NUM_LEDS; p++) {
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leds[p] = ColorFromPalette(currentPalette, p*255/(NUM_LEDS-1), BRIGHTNESS, NOBLEND);
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}
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}
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