IDeATe

Outcome

Exercise 1

Modify the code to light up pixel by pixel then reverse the sequence turning each pixel off one by one

// 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);

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

void loop() {
  uint16_t i;
  uint32_t white = strip.Color(255, 255, 255);
  uint32_t off = strip.Color(0, 0, 0);

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

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Exercise 2

Modify the code to light up blue, then red, then green then white in sequence

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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);

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

void loop() {
  uint16_t i;
  uint32_t blue = strip.Color(0, 0, 255);
  uint32_t red = strip.Color(255, 0, 0);
  uint32_t green = strip.Color(0, 255, 0);
  uint32_t white = strip.Color(255, 255, 255);
  uint32_t off = strip.Color(0, 0, 0);
  
  uint32_t colors[4] = {
    blue,
    red,
    green,
    white
  };

  for(i=0; i< strip.numPixels(); i++) {
    strip.setPixelColor(i, colors[i%4]);
		strip.show();
		delay( 100 );
  }
	
	delay( 100 );
	
  for(i=0; i< strip.numPixels(); i++) {
    strip.setPixelColor(i, off);
		strip.show();
		delay( 100 );
  }
}

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Exercise 3

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

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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);


// Particle.function("SetRed", setRed);
// void setRed(String str) {
//     int value = str.toInt();
    
// }




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

void loop() {
  uint16_t i;
  uint32_t blue = strip.Color(0, 0, 255);
  uint32_t red = strip.Color(255, 0, 0);
  uint32_t green = strip.Color(0, 255, 0);
  uint32_t white = strip.Color(255, 255, 255);
  uint32_t off = strip.Color(0, 0, 0);
  
  uint32_t colors[4] = {
    blue,
    red,
    green,
    white
  };
  
 int level = 0;
 
 while(level <= 255) {
  for(i=0; i< strip.numPixels(); i++) {
    strip.setPixelColor(i, strip.Color(level, 0, 0));
		strip.show();
  }
  level++;
  delay(1);
 }
	
 delay( 100 );

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

  delay( 2000 );

}

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Exercise 4

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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// 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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