Arduino LED Strip Samples

Cylon.ino

#include <NeoPixelBus.h>
#include <NeoPixelAnimator.h>

const uint16_t PixelCount = 8; // make sure to set this to the number of pixels in your strip
const uint8_t PixelPin = 2;  // make sure to set this to the correct pin, ignored for Esp8266
const RgbColor CylonEyeColor(HtmlColor(0x7f0000));

NeoPixelBus<NeoGrbFeature, NeoEsp8266Uart800KbpsMethod> strip(PixelCount, PixelPin);

NeoPixelAnimator animations(2); // only ever need 2 animations

uint16_t lastPixel = 0; // track the eye position
int8_t moveDir = 1; // track the direction of movement

// uncomment one of the lines below to see the effects of
// changing the ease function on the movement animation
AnimEaseFunction moveEase =
//      NeoEase::Linear;
//      NeoEase::QuadraticInOut;
//      NeoEase::CubicInOut;
        NeoEase::QuarticInOut;
//      NeoEase::QuinticInOut;
//      NeoEase::SinusoidalInOut;
//      NeoEase::ExponentialInOut;
//      NeoEase::CircularInOut;

void FadeAll(uint8_t darkenBy)
{
    RgbColor color;
    for (uint16_t indexPixel = 0; indexPixel < strip.PixelCount(); indexPixel++)
    {
        color = strip.GetPixelColor(indexPixel);
        color.Darken(darkenBy);
        strip.SetPixelColor(indexPixel, color);
    }
}

void FadeAnimUpdate(const AnimationParam& param)
{
    if (param.state == AnimationState_Completed)
    {
        FadeAll(10);
        animations.RestartAnimation(param.index);
    }
}

void MoveAnimUpdate(const AnimationParam& param)
{
    // apply the movement animation curve
    float progress = moveEase(param.progress);

    // use the curved progress to calculate the pixel to effect
    uint16_t nextPixel;
    if (moveDir > 0)
    {
        nextPixel = progress * PixelCount;
    }
    else
    {
        nextPixel = (1.0f - progress) * PixelCount;
    }

    // if progress moves fast enough, we may move more than
    // one pixel, so we update all between the calculated and
    // the last
    if (lastPixel != nextPixel)
    {
        for (uint16_t i = lastPixel + moveDir; i != nextPixel; i += moveDir)
        {
            strip.SetPixelColor(i, CylonEyeColor);
        }
    }
    strip.SetPixelColor(nextPixel, CylonEyeColor);

    lastPixel = nextPixel;

    if (param.state == AnimationState_Completed)
    {
        // reverse direction of movement
        moveDir *= -1;

        // done, time to restart this position tracking animation/timer
        animations.RestartAnimation(param.index);
    }
}

void SetupAnimations()
{
    // fade all pixels providing a tail that is longer the faster
    // the pixel moves.
    animations.StartAnimation(0, 5, FadeAnimUpdate);

    // take several seconds to move eye fron one side to the other
    animations.StartAnimation(1, 2000, MoveAnimUpdate);
}

void setup()
{
    strip.Begin();
    strip.Show();

    SetupAnimations();
}

void loop()
{
    // this is all that is needed to keep it running
    // and avoiding using delay() is always a good thing for
    // any timing related routines
    animations.UpdateAnimations();
    strip.Show();
}

LEDTest.ino

#include <NeoPixelBus.h>

const uint16_t PixelCount = 8; // this example assumes 4 pixels, making it smaller will cause a failure
const uint8_t PixelPin = 2;  // make sure to set this to the correct pin, ignored for Esp8266

#define colorSaturation 128

// Uart method is good for the Esp-01 or other pin restricted modules
// NOTE: These will ignore the PIN and use GPI02 pin
NeoPixelBus<NeoRgbFeature, NeoEsp8266Uart800KbpsMethod> strip(PixelCount, PixelPin);

RgbColor red(colorSaturation, 0, 0);
RgbColor green(0, colorSaturation, 0);
RgbColor blue(0, 0, colorSaturation);
RgbColor white(colorSaturation);
RgbColor black(0);

HslColor hslRed(red);
HslColor hslGreen(green);
HslColor hslBlue(blue);
HslColor hslWhite(white);
HslColor hslBlack(black);


void setup()
{
    Serial.begin(115200);
    while (!Serial); // wait for serial attach

    Serial.println();
    Serial.println("Initializing...");
    Serial.flush();

    // this resets all the neopixels to an off state
    strip.Begin();
    strip.Show();


    Serial.println();
    Serial.println("Running...");
}


void loop()
{
    delay(5000);

    Serial.println("Colors R, G, B, W...");

    // set the colors, 
    // if they don't match in order, you need to use NeoGrbFeature feature
    strip.SetPixelColor(0, red);
    strip.SetPixelColor(1, green);
    strip.SetPixelColor(2, blue);
    strip.SetPixelColor(3, white);
    // the following line demonstrates rgbw color support
    // if the NeoPixels are rgbw types the following line will compile
    // if the NeoPixels are anything else, the following line will give an error
    //strip.SetPixelColor(3, RgbwColor(colorSaturation));
    strip.Show();


    delay(5000);

    Serial.println("Off ...");

    // turn off the pixels
    strip.SetPixelColor(0, black);
    strip.SetPixelColor(1, black);
    strip.SetPixelColor(2, black);
    strip.SetPixelColor(3, black);
    strip.Show();

    delay(5000);

    Serial.println("HSL Colors R, G, B, W...");

    // set the colors, 
    // if they don't match in order, you may need to use NeoGrbFeature feature
    strip.SetPixelColor(0, hslRed);
    strip.SetPixelColor(1, hslGreen);
    strip.SetPixelColor(2, hslBlue);
    strip.SetPixelColor(3, hslWhite);
    strip.Show();


    delay(5000);

    Serial.println("Off again...");

    // turn off the pixels
    strip.SetPixelColor(0, hslBlack);
    strip.SetPixelColor(1, hslBlack);
    strip.SetPixelColor(2, hslBlack);
    strip.SetPixelColor(3, hslBlack);
    strip.Show();

}