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| #include <Adafruit_NeoPixel.h> | |
| #define PIN 6 | |
| #define NUM_LEDS 8 | |
| #define COLOR_PRESET 0x00F02000 // orange | |
| // Parameter 1 = number of Pixels in strip | |
| // Parameter 2 = Arduino pin number (most are valid) | |
| // Parameter 3 = pixel type flags, add together as needed: | |
| // NEO_KHZ800 800 KHz bitstream (most NeoPixel products w/WS2812 LEDs) | |
| // NEO_KHZ400 400 KHz (classic 'v1' (not v2) FLORA Pixels, WS2811 drivers) | |
| // NEO_GRB Pixels are wired for GRB bitstream (most NeoPixel products) | |
| // NEO_RGB Pixels are wired for RGB bitstream (v1 FLORA Pixels, not v2) | |
| // NEO_GRBW Pixels are wired for GRBW bitstream (SK6812 RGBW LEDs) | |
| Adafruit_NeoPixel strip = Adafruit_NeoPixel(NUM_LEDS, PIN, NEO_GRBW + NEO_KHZ800); | |
| // IMPORTANT: To reduce NeoPixel burnout risk, add 1000 uF capacitor across | |
| // pixel power leads, add 300 - 500 Ohm resistor on first pixel's data input | |
| // and minimize distance between Arduino and first pixel. Avoid connecting | |
| // on a live circuit...if you must, connect GND first. | |
| uint8_t rStates[NUM_LEDS]; | |
| uint8_t bStates[NUM_LEDS]; | |
| uint8_t gStates[NUM_LEDS]; | |
| float fadeRate = 0.04; | |
| uint8_t rPreset = ((COLOR_PRESET >> 16)&0xff); | |
| uint8_t gPreset = ((COLOR_PRESET >> 8)&0xff); | |
| uint8_t bPreset = ((COLOR_PRESET )&0xff); | |
| void setup() { | |
| strip.begin(); | |
| strip.show(); | |
| for(uint16_t i = 0; i < NUM_LEDS; i++) { | |
| rStates[i] = 0; | |
| gStates[i] = 0; | |
| bStates[i] = 0; | |
| } | |
| } | |
| void loop () { | |
| if (random(20) == 1) { | |
| uint16_t i = random(NUM_LEDS); | |
| if (rStates[i] < 1 && gStates[i] < 1 && bStates[i] < 1) { | |
| rStates[i] = rPreset; | |
| gStates[i] = gPreset; | |
| bStates[i] = bPreset; | |
| } | |
| } | |
| for(uint16_t i = 0; i < NUM_LEDS; i++) { | |
| strip.setPixelColor(i, rStates[i], gStates[i], bStates[i]); | |
| if ( rStates[i] >= 1 || gStates[i] >= 1 || bStates[i] >= 1 ){ | |
| if ( rStates[i] >= 1 ){ | |
| rStates[i] -= rStates[i]*fadeRate; | |
| } else { | |
| rStates[i] = 0; | |
| } | |
| if ( gStates[i] >= 1 ){ | |
| gStates[i] -= gStates[i]*fadeRate; | |
| } else { | |
| gStates[i] = 0; | |
| } | |
| if ( bStates[i] >= 1 ){ | |
| bStates[i] -= bStates[i]*fadeRate; | |
| } else { | |
| bStates[i] = 0; | |
| } | |
| } | |
| } | |
| strip.show(); | |
| delay(10); | |
| } |
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| #include <Adafruit_NeoPixel.h> | |
| #define PIN 6 | |
| #define NUM_LEDS 8 | |
| #define COLOR_PRESET 0x00F05000 | |
| #define COLOR_GLOW 0x00060010 | |
| Adafruit_NeoPixel strip = Adafruit_NeoPixel(NUM_LEDS, PIN, NEO_GRBW + NEO_KHZ800); | |
| uint8_t rStates[NUM_LEDS]; | |
| uint8_t bStates[NUM_LEDS]; | |
| uint8_t gStates[NUM_LEDS]; | |
| float fadeRate = 0.03; | |
| uint8_t rPreset = ((COLOR_PRESET >> 16)&0xff); | |
| uint8_t gPreset = ((COLOR_PRESET >> 8)&0xff); | |
| uint8_t bPreset = ((COLOR_PRESET )&0xff); | |
| uint8_t rGlow = ((COLOR_GLOW >> 16)&0xff); | |
| uint8_t gGlow = ((COLOR_GLOW >> 8)&0xff); | |
| uint8_t bGlow = ((COLOR_GLOW )&0xff); | |
| void setup() { | |
| strip.begin(); | |
| strip.show(); | |
| for(uint16_t i = 0; i < NUM_LEDS; i++) { | |
| rStates[i] = 0; | |
| gStates[i] = 0; | |
| bStates[i] = 0; | |
| } | |
| } | |
| void loop () { | |
| if (random(30) == 1) { | |
| uint16_t i = random(NUM_LEDS); | |
| if (rStates[i] <= rGlow && gStates[i] <= gGlow && bStates[i] <= bGlow) { | |
| rStates[i] = rPreset + random(16); | |
| gStates[i] = gPreset + random(16); | |
| bStates[i] = bPreset + random(16); | |
| } | |
| } | |
| for(uint16_t i = 0; i < NUM_LEDS; i++) { | |
| strip.setPixelColor(i, rStates[i], gStates[i], bStates[i]); | |
| if ( (rStates[i] >= rGlow) || (gStates[i] >= gGlow) || (bStates[i] >= bGlow) ){ | |
| rStates[i] > rGlow ? rStates[i] -= rStates[i]*fadeRate : rStates[i] = rGlow; | |
| gStates[i] > gGlow ? gStates[i] -= gStates[i]*fadeRate : gStates[i] = gGlow; | |
| bStates[i] > bGlow ? bStates[i] -= bStates[i]*fadeRate : bStates[i] = bGlow; | |
| } else { | |
| strip.setPixelColor(i, rGlow, gGlow, bGlow); | |
| } | |
| } | |
| strip.show(); | |
| delay(10); | |
| } |
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Differences to master:
NeoPixelTwinkle.inoFunctionality - use one preset color instead of random colors
Structure - using uint8_t (8 bits) data types instead of float (32 bits) for the rgbState values
NeoPixelTwoTwinkle.inoFunctionality - use one preset color for the sparks and one (darker) preset color to fade back to (instead of
black/off)Structure - using uint8_t (8 bits) data types instead of float (32 bits) for the rgbState values
(also the constructor uses uses WRGB strips)
Demo
Running
NeoPixelTwoTwinkle.inoTags:
effect animation sparkly sparkling sparkles twinkle blinky blinking fading fade