Arduino NeoPIxel Examples

analog_meter.c

#include <Adafruit_NeoPixel.h>
# define PIN 2
# define NUM_PIXELS 6

Adafruit_NeoPixel pixels = Adafruit_NeoPixel(NUM_PIXELS, PIN);

void setup()
{
    pixels.begin();
}

void loop()
{
    int val = analogRead(A5);
    val = map(val, 0, 1023, 0, NUM_PIXELS-1);
    for (int i=0; i<NUM_PIXELS; i++)
    {
        if (i <= val)
        {
            pixels.setPixelColor(i, 0, 255, 0);
        }
        else
        {
            pixels.setPixelColor(i, 0, 0, 0);
        }
    }
    pixels.show();
    delay(100);
}

intro.c

#include <Adafruit_NeoPixel.h>
# define PIN 2
# define NUM_PIXELS 12

Adafruit_NeoPixel pixels = Adafruit_NeoPixel(NUM_PIXELS, PIN);

void setup()
{
    pixels.begin();
//    pixels.setPixelColor(0, 255, 128, 0);
// fill -> color, start, count
//    pixels.fill(pixels.Color(255, 128, 0), 1, 4);
//    pixels.show();
}

void loop()
{
    for (int i=0; i<NUM_PIXELS; i++)
    {
        pixels.setPixelColor(i, 255, 255, 0);
        pixels.show();
        delay(100);
    }
    pixels.clear();
    pixels.show();
}