NeoPixel Stick - 8 x WS2812 (5050RGB) [D009]

NeoPixel Stick - 8 x WS2812 (5050RGB) [D009]

https://www.youtube.com/watch?v=55YDvXyeVjc

*GitHub : https://github.com/rdiot/rdiot-d009.git

* Specs

Make your own little LED strip arrangement with this stick of NeoPixel LEDs. We crammed 8 of the tiny 5050 (5mm x 5mm) smart RGB LEDs onto a PCB with mounting holes and a chainable design. Use only one microcontroller pin to control as many as you can chain together! Each LED is addressable as the driver chip is inside the LED. Each one has ~18mA constant current drive so the color will be very consistent even if the voltage varies, and no external choke resistors are required making the design slim. Power the whole thing with 5VDC (4-7V works) and you're ready to rock.

Product Url : https://www.adafruit.com/products/1426

* Contents

- Connect

GND ----- GND

4-7VDC ----- 5V

DIN ----- D6

- Library : https://github.com/adafruit/Adafruit_NeoPixel

- Key Code (Example : Standardtest.ino)

#include <Adafruit_NeoPixel.h>

#ifdef __AVR__

  #include <avr/power.h>

#endif

 

#define PIN 6

 

// 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)

Adafruit_NeoPixel strip = Adafruit_NeoPixel(60, PIN, NEO_GRB + 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.

 

void setup() {

  // This is for Trinket 5V 16MHz, you can remove these three lines if you are not using a Trinket

  #if defined (__AVR_ATtiny85__)

    if (F_CPU == 16000000) clock_prescale_set(clock_div_1);

  #endif

  // End of trinket special code

 

 

  strip.begin();

  strip.show(); // Initialize all pixels to 'off'

}

 

void loop() {

  // Some example procedures showing how to display to the pixels:

  colorWipe(strip.Color(255, 0, 0), 50); // Red

  colorWipe(strip.Color(0, 255, 0), 50); // Green

  colorWipe(strip.Color(0, 0, 255), 50); // Blue

  // Send a theater pixel chase in...

  theaterChase(strip.Color(127, 127, 127), 50); // White

  theaterChase(strip.Color(127, 0, 0), 50); // Red

  theaterChase(strip.Color(0, 0, 127), 50); // Blue

 

  rainbow(20);

  rainbowCycle(20);

  theaterChaseRainbow(50);

}

 

// Fill the dots one after the other with a color

void colorWipe(uint32_t c, uint8_t wait) {

  for(uint16_t i=0; i<strip.numPixels(); i++) {

    strip.setPixelColor(i, c);

    strip.show();

    delay(wait);

  }

}

 

void rainbow(uint8_t wait) {

  uint16_t i, j;

 

  for(j=0; j<256; j++) {

    for(i=0; i<strip.numPixels(); i++) {

      strip.setPixelColor(i, Wheel((i+j) & 255));

    }

    strip.show();

    delay(wait);

  }

}

 

// Slightly different, this makes the rainbow equally distributed throughout

void rainbowCycle(uint8_t wait) {

  uint16_t i, j;

 

  for(j=0; j<256*5; j++) { // 5 cycles of all colors on wheel

    for(i=0; i< strip.numPixels(); i++) {

      strip.setPixelColor(i, Wheel(((i * 256 / strip.numPixels()) + j) & 255));

    }

    strip.show();

    delay(wait);

  }

}

 

//Theatre-style crawling lights.

void theaterChase(uint32_t c, uint8_t wait) {

  for (int j=0; j<10; j++) {  //do 10 cycles of chasing

    for (int q=0; q < 3; q++) {

      for (int i=0; i < strip.numPixels(); i=i+3) {

        strip.setPixelColor(i+q, c);    //turn every third pixel on

      }

      strip.show();

 

      delay(wait);

 

      for (int i=0; i < strip.numPixels(); i=i+3) {

        strip.setPixelColor(i+q, 0);        //turn every third pixel off

      }

    }

  }

}

 

//Theatre-style crawling lights with rainbow effect

void theaterChaseRainbow(uint8_t wait) {

  for (int j=0; j < 256; j++) {     // cycle all 256 colors in the wheel

    for (int q=0; q < 3; q++) {

      for (int i=0; i < strip.numPixels(); i=i+3) {

        strip.setPixelColor(i+q, Wheel( (i+j) % 255));    //turn every third pixel on

      }

      strip.show();

 

      delay(wait);

 

      for (int i=0; i < strip.numPixels(); i=i+3) {

        strip.setPixelColor(i+q, 0);        //turn every third pixel off

      }

    }

  }

}

 

// Input a value 0 to 255 to get a color value.

// The colours are a transition r - g - b - back to r.

uint32_t Wheel(byte WheelPos) {

  WheelPos = 255 - WheelPos;

  if(WheelPos < 85) {

    return strip.Color(255 - WheelPos * 3, 0, WheelPos * 3);

  }

  if(WheelPos < 170) {

    WheelPos -= 85;

    return strip.Color(0, WheelPos * 3, 255 - WheelPos * 3);

  }

  WheelPos -= 170;

  return strip.Color(WheelPos * 3, 255 - WheelPos * 3, 0);

}