forked from Makuna/NeoPixelBus
Makuna
71dd6e53cf
two samples now are included improved the readme (changed from txt to md) NEO_RGB doesn;t require 400khz support, and 400khz support by default isn't compiled in
140 lines
3.5 KiB
Plaintext
140 lines
3.5 KiB
Plaintext
#include <NeoPixelBus.h>
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#define pixelCount 4
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NeoPixelBus strip = NeoPixelBus(pixelCount, 8);
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uint16_t effectState = 0;
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void setup()
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{
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strip.Begin();
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strip.Show();
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SetRandomSeed();
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}
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void loop()
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{
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// There are three fun functions that implement different effects
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// uncomment one at a time and upload to see the effect
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// LoopAround(192, 200); // very interesting on rings of NeoPixels
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PickRandom(128);
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// FadeInFadeOutRinseRepeat(192);
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// start animating
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strip.StartAnimating();
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// wait until no more animations are running
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while (strip.IsAnimating())
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{
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strip.UpdateAnimations();
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strip.Show();
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delay(31); // ~30hz change cycle
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}
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}
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void FadeInFadeOutRinseRepeat(uint8_t peak)
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{
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if (effectState == 0)
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{
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for (uint8_t pixel = 0; pixel < pixelCount; pixel++)
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{
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uint16_t time = random(800,1000);
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strip.LinearFadePixelColor(time, pixel, RgbColor(random(peak), random(peak), random(peak)));
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}
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}
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else if (effectState == 1)
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{
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for (uint8_t pixel = 0; pixel < pixelCount; pixel++)
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{
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uint16_t time = random(600,700);
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strip.LinearFadePixelColor(time, pixel, RgbColor(0, 0, 0));
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}
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}
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effectState = (effectState + 1) % 2; // next effectState and keep within the number of effectStates
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}
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void PickRandom(uint8_t peak)
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{
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// pick random set of pixels to animate
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uint8_t count = random(pixelCount);
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while (count > 0)
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{
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uint8_t pixel = random(pixelCount);
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// configure the animations
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RgbColor color; // = strip.getPixelColor(pixel);
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color = RgbColor(random(peak), random(peak), random(peak));
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uint16_t time = random(100,400);
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strip.LinearFadePixelColor( time, pixel, color);
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count--;
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}
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}
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void LoopAround(uint8_t peak, uint16_t speed)
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{
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// Looping around the ring sample
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uint16_t prevPixel;
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RgbColor prevColor;
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// fade previous one dark
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prevPixel = (effectState + (pixelCount - 5)) % pixelCount;
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strip.LinearFadePixelColor(speed, prevPixel, RgbColor(0, 0, 0));
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// fade previous one dark
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prevPixel = (effectState + (pixelCount - 4)) % pixelCount;
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prevColor = strip.GetPixelColor( prevPixel );
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prevColor.Darken(prevColor.CalculateBrightness() / 2);
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strip.LinearFadePixelColor(speed, prevPixel, prevColor);
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// fade previous one dark
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prevPixel = (effectState + (pixelCount - 3)) % pixelCount;
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prevColor = strip.GetPixelColor( prevPixel );
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prevColor.Darken(prevColor.CalculateBrightness() / 2);
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strip.LinearFadePixelColor(speed, prevPixel, prevColor);
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// fade previous one dark
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prevPixel = (effectState + (pixelCount - 2)) % pixelCount;
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prevColor = strip.GetPixelColor( prevPixel );
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prevColor.Darken(prevColor.CalculateBrightness() / 2);
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strip.LinearFadePixelColor(speed, prevPixel, prevColor);
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// fade previous one dark
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prevPixel = (effectState + (pixelCount - 1)) % pixelCount;
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prevColor = strip.GetPixelColor( prevPixel );
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prevColor.Darken(prevColor.CalculateBrightness() / 2);
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strip.LinearFadePixelColor(speed, prevPixel, prevColor);
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// fade current one light
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strip.LinearFadePixelColor(speed, effectState, RgbColor(random(peak), random(peak), random(peak)));
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effectState = (effectState + 1) % pixelCount;
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}
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void SetRandomSeed()
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{
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uint32_t seed;
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// random works best with a seed that can use 31 bits
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// analogRead on a unconnected pin tends toward less than four bits
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seed = analogRead(0);
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delay(1);
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for (int shifts = 3; shifts < 31; shifts += 3)
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{
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seed ^= analogRead(0) << shifts;
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delay(1);
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}
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// Serial.println(seed);
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randomSeed(seed);
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}
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