Comments: WS2812 Breakout Hookup Guide

I'm looking for a slightly more dense version of this. Piano keys seem to be an average of 23mm (wikipedia: "Modern piano keyboards ordinarily have an octave span of 164–165 mm (6.5–6.5 in); resulting in the width of black keys averaging 13.7 mm (0.54 in) and white keys about 23.5 mm (0.93 in) wide at the base, disregarding space between keys. Several reduced-size standards have been proposed and marketed.") and I'd ideally like to have one per key.... any chance.....

I keep getting the following error. /Users/xys/Documents/Arduino/WS2812_Breakout_Example/WS2812_Breakout_Example.ino: In function 'void loop()': /Users/xys/Documents/Arduino/WS2812_Breakout_Example/WS2812_Breakout_Example.ino:53:22: warning: large integer implicitly truncated to unsigned type [-Woverflow] cylon(INDIGO, 500); // Indigo cylon eye!

Facing a difficulty in terms of hardware.. Exactly where and how am I supposed to connect a capacitor and resistor?

I need a lot of help with a problem I currently have. So my LED strip is not working well. Whenever i plug in the wire to 5V from the red wire with the code (It was working well before) in, it just flickers once and goes black. I use Arduino UNO. I tried many different wires with my arduino and it does the same thing everytime. It used to work fine and I need an answer really soon for I have to have this done before March 4th! Thanks: Logan Sautter.

I had issues with the example code. Calling for red gave green and vice versa. The problem only happens when calling colors by name.

The problem seems to be in calling the NeoPixel class. The example uses NEO_GRB + NEO_KHZ800. But the header file defines all the colors red then green and then blue.

I'm using the pth version if that makes any difference.

I need help with a problem...

I have an Intel Galileo that I am attempting to use to control a 1M strip of addressable RGB LED's. I have downloaded and installed the library and the sample code. When I attempt to compile / Verify it, I get the following errors: Arduino: 1.5.3 (Windows NT (unknown)), Board: "Intel® Galileo"

D:\G\arduino-1.5.3/hardware/tools/x86/i686-pokysdk-mingw32/usr/bin/i586-poky-linux-uclibc/i586-poky-linux-uclibc-g++ -m32 -march=i586 --sysroot=D:\G\arduino-1.5.3/hardware/tools/x86/i586-poky-linux-uclibc -c -g -Os -w -fno-exceptions -ffunction-sections -fdata-sections -MMD -march=i586 -m32 -DARDUINO=153 -ID:\G\arduino-1.5.3\hardware\arduino\x86\cores\arduino -ID:\G\arduino-1.5.3\hardware\arduino\x86\variants\galileo_fab_d -IC:\Users\Glen\Documents\Arduino\libraries\Adafruit_NeoPixel C:\Users\Glen\AppData\Local\Temp\build6958966864876242060.tmp\WS2812_Breakout_Example.cpp -o C:\Users\Glen\AppData\Local\Temp\build6958966864876242060.tmp\WS2812_Breakout_Example.cpp.o

D:\G\arduino-1.5.3/hardware/tools/x86/i686-pokysdk-mingw32/usr/bin/i586-poky-linux-uclibc/i586-poky-linux-uclibc-g++ -m32 -march=i586 --sysroot=D:\G\arduino-1.5.3/hardware/tools/x86/i586-poky-linux-uclibc -c -g -Os -w -fno-exceptions -ffunction-sections -fdata-sections -MMD -march=i586 -m32 -DARDUINO=153 -ID:\G\arduino-1.5.3\hardware\arduino\x86\cores\arduino -ID:\G\arduino-1.5.3\hardware\arduino\x86\variants\galileo_fab_d -IC:\Users\Glen\Documents\Arduino\libraries\Adafruit_NeoPixel -IC:\Users\Glen\Documents\Arduino\libraries\Adafruit_NeoPixel\utility C:\Users\Glen\Documents\Arduino\libraries\Adafruit_NeoPixel\Adafruit_NeoPixel.cpp -o C:\Users\Glen\AppData\Local\Temp\build6958966864876242060.tmp\Adafruit_NeoPixel\Adafruit_NeoPixel.cpp.o

C:\Users\Glen\Documents\Arduino\libraries\Adafruit_NeoPixel\Adafruit_NeoPixel.cpp: In member function 'void Adafruit_NeoPixel::show()': C:\Users\Glen\Documents\Arduino\libraries\Adafruit_NeoPixel\Adafruit_NeoPixel.cpp:89:16: error: 'noInterrupts' was not declared in this scope C:\Users\Glen\Documents\Arduino\libraries\Adafruit_NeoPixel\Adafruit_NeoPixel.cpp:824:14: error: 'interrupts' was not declared in this scope

The compiler does not seem to like the noInterrupts or the Interrupts calls even though these are clearly supported in the Arduino language. Is there something that I am doing wrong?

Problem...

In the Adafruit Neopixel library, sketches / objects and their members overall work fine... Except when you try to use the class member to set a single pixel to all white:

// Set pixel color from 'packed' 32-bit RGB color:
void Adafruit_NeoPixel::setPixelColor(uint16_t n, uint32_t c) {

And employ it on an Arduino Yun/Yún with a call like:

Console.println("White");
strip.setPixelColor(0, strip.Color(255, 255, 255)); // White
strip.show();
delay(4000);

The pixel Flashes white, then goes to black (off)

However if you change the above with:

strip.setPixelColor(0, strip.Color(255, 255, 254)); // or make any of the 3 values so that they are not all 3 the same...

Then the pixel works fine... stays (almost) pure white as possible.

What is the library or HW bug where (on the Yun/Yún, at least) where if these three color values are the same non-zero values, it flashes that color then instantly changes to off?