86 lines
3 KiB
C++
86 lines
3 KiB
C++
#include <FastLED.h>
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#define LED_PIN 3
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// Information about the LED strip itself
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#define NUM_LEDS 60
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#define CHIPSET WS2811
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#define COLOR_ORDER GRB
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CRGB leds[NUM_LEDS];
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#define BRIGHTNESS 128
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// FastLED v2.1 provides two color-management controls:
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// (1) color correction settings for each LED strip, and
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// (2) master control of the overall output 'color temperature'
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//
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// THIS EXAMPLE demonstrates the second, "color temperature" control.
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// It shows a simple rainbow animation first with one temperature profile,
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// and a few seconds later, with a different temperature profile.
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//
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// The first pixel of the strip will show the color temperature.
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//
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// HELPFUL HINTS for "seeing" the effect in this demo:
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// * Don't look directly at the LED pixels. Shine the LEDs aganst
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// a white wall, table, or piece of paper, and look at the reflected light.
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//
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// * If you watch it for a bit, and then walk away, and then come back
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// to it, you'll probably be able to "see" whether it's currently using
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// the 'redder' or the 'bluer' temperature profile, even not counting
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// the lowest 'indicator' pixel.
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//
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//
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// FastLED provides these pre-conigured incandescent color profiles:
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// Candle, Tungsten40W, Tungsten100W, Halogen, CarbonArc,
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// HighNoonSun, DirectSunlight, OvercastSky, ClearBlueSky,
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// FastLED provides these pre-configured gaseous-light color profiles:
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// WarmFluorescent, StandardFluorescent, CoolWhiteFluorescent,
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// FullSpectrumFluorescent, GrowLightFluorescent, BlackLightFluorescent,
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// MercuryVapor, SodiumVapor, MetalHalide, HighPressureSodium,
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// FastLED also provides an "Uncorrected temperature" profile
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// UncorrectedTemperature;
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#define TEMPERATURE_1 Tungsten100W
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#define TEMPERATURE_2 OvercastSky
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// How many seconds to show each temperature before switching
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#define DISPLAYTIME 20
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// How many seconds to show black between switches
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#define BLACKTIME 3
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void loop()
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{
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// draw a generic, no-name rainbow
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static uint8_t starthue = 0;
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fill_rainbow( leds + 5, NUM_LEDS - 5, --starthue, 20);
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// Choose which 'color temperature' profile to enable.
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uint8_t secs = (millis() / 1000) % (DISPLAYTIME * 2);
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if( secs < DISPLAYTIME) {
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FastLED.setTemperature( TEMPERATURE_1 ); // first temperature
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leds[0] = TEMPERATURE_1; // show indicator pixel
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} else {
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FastLED.setTemperature( TEMPERATURE_2 ); // second temperature
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leds[0] = TEMPERATURE_2; // show indicator pixel
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}
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// Black out the LEDs for a few secnds between color changes
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// to let the eyes and brains adjust
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if( (secs % DISPLAYTIME) < BLACKTIME) {
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memset8( leds, 0, NUM_LEDS * sizeof(CRGB));
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}
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FastLED.show();
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FastLED.delay(8);
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}
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void setup() {
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delay( 3000 ); // power-up safety delay
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// It's important to set the color correction for your LED strip here,
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// so that colors can be more accurately rendered through the 'temperature' profiles
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FastLED.addLeds<CHIPSET, LED_PIN, COLOR_ORDER>(leds, NUM_LEDS).setCorrection( TypicalSMD5050 );
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FastLED.setBrightness( BRIGHTNESS );
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}
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