IDeATe

Outcome

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Outcome

Modify the code to light up pixel by pixel then reverse the sequence turning each pixel off one by one
Modify the code to light up blue, then red, then green then white in sequence
Change the code to only light up only one pixel at a time. With each loop move that pixel one position higher. When it reaches the final pixel, restart the sequence at zero i.e. build a single pixel that will continually cycle
Add three Particle.function to set the Red, Green and Blue components. Allow these values to be set from 0-255 and as they are set to change all of the pixels on the LED strip to that color.

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Process

Tested NeoPixel in different ways. Including display in different patterns.

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Reflection

Controlling NeoPixel is easy. Just need to take care of the pattern that is expected by the task.

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// This #include statement was automatically added by the Particle IDE.
#include <neopixel.h>

// IMPORTANT: Set pixel COUNT, PIN and TYPE
#define PIXEL_PIN D2
#define PIXEL_COUNT 16
#define PIXEL_TYPE WS2812

Adafruit_NeoPixel strip = Adafruit_NeoPixel(PIXEL_COUNT, PIXEL_PIN, PIXEL_TYPE);

int setRed(String str) {
    int level = str.toInt();
    for(int i=0; i< strip.numPixels(); i++) {
    strip.setPixelColor(i, strip.Color(level, 0, 0));
    	strip.show();
    }
    return 1;
}

int setGreen(String str) {
    int level = str.toInt();
    for(int i=0; i< strip.numPixels(); i++) {
    strip.setPixelColor(i, strip.Color(0, level, 0));
    	strip.show();
    }
    return 1;
}

int setBlue(String str) {
    int level = str.toInt();
    for(int i=0; i< strip.numPixels(); i++) {
    strip.setPixelColor(i, strip.Color(0, 0, level));
    	strip.show();
    }
    return 1;
}



void setup() {
  strip.begin();
  strip.show();
  Particle.function("setRed", setRed);
  Particle.function("setGreen", setGreen);
  Particle.function("setBlue", setBlue);
}

void loop() {


}

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#include "neopixel.h"

// IMPORTANT: Set pixel COUNT, PIN and TYPE
#define PIXEL_PIN D2
#define PIXEL_COUNT 16
#define PIXEL_TYPE WS2812

Adafruit_NeoPixel strip = Adafruit_NeoPixel(PIXEL_COUNT, PIXEL_PIN, PIXEL_TYPE);

void setup() {

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

void loop() {

  uint16_t i;
  uint32_t c = strip.Color(255, 255, 255);

  for(i=0; i< strip.numPixels(); i++) {
    strip.setPixelColor(i, c );
		strip.show();
		delay( 100 );
  }
	
	delay( 100 );

}

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