2856 Datasheet by Adafruit Industries LLC

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NeoPixel Ring - 16 x 5050 RGBW LEDs w/ Integrated
Drivers - Cool White - ~6000K
PRODUCT ID: 2856
Description
What is better than smart RGB LEDs? Smart RGB+White LEDs! These NeoPixel rings now have 4
LEDs in them (red, green, blue
and
white) for excellent lighting effects. Round and round and
round they go!
Thisisthe16LEDRGBWNeoPixelRinginCoolWhite.WehaveatonofotherNeoPixelringsinthestore
tocheckout!
16 ultra bright smart LED NeoPixels are arranged in a circle with 1.75" (44.5mm) outer diameter.
The rings are 'chainable' - connect the output pin of one to the input pin of another. Use only
one microcontroller pin to control as many as you can chain together! Each LED is addressable as
the driver chip is inside the LED. Each one has ~18mA constant current drive so the color will be
very consistent even if the voltage varies, and no external choke resistors are required making
the design slim. Power the whole thing with 5VDC and you're ready to rock.
The NeoPixel is 'split', one half is the RGB you know and love, the other half is a white LED with a
yellow phosphor. Unlit, it resembles an egg yolk. Lit up these are insanely bright (like ow my eye
hurts) and can be controlled with 8-bit PWM per channel (8 x 4 channels = 32-bit color overall).
Great for adding lots of colorful + white dots to your project!
NeoPixelLEDsuse800KHzprotocolsospecifictimingisrequired.OnNeoPixels,thePWMrateis~400
Hz,whichworkswellbutisnoticableiftheLEDismoving.Incomparison,DotStarshavea20KHzPWM
rate,soevenwhenmovingtheLEDaround,youwon'tseethepixelation,theblendingisverysmooth.
(werecommendDotStarsifyoucanusethem)
NeoPixelsare 5050-sized LEDs with an embedded microcontrollerinside the LED . You can set
the brightness and color of each R/G/B/W with 8-bit PWM precision (so 32-bit color per pixel).
The LEDs are controlled by shift-registers and only 1 digital output pin are required to send data
down. The PWM is built into each LED-chip so once you set the color you can stop talking to the
ring and it will continue to PWM all the LEDs for you.
Wehaveatutorialshowingwiring,powerusagecalculations,examplecodeforusage,etc.forNeoPixel
Pleasecheckitout!PleasenoteyouwillneedaNeoPixellibrarywithRGBWsupportwhichisnotalways
available.Ifyoutrytocontrolthesewithaplain'RGB'NeoPixellibrary,you'llgetveryweirdresults.Our
AdafruitNeoPixellibrarydoessupportRGBWbutifyou'reusingsomethingelse,justbeawarethatit
mightrequiresomehacking.
OurdetailedNeoPixelUberguidehaseverythingyouneedtouseNeoPixelsinanyshapeandsize.
Includingreadytogolibrary&examplecodefortheArduinoUNO/Duemilanove/Diecimila,
Flora/Micro/Leonardo,Trinket/Gemma,ArduinoDue&ArduinoMega/ADK(allversions)
Comes as a single ring with 16 individually addressable RGBW LEDs assembled and tested.
Technical Details
Outer diameter: 44.5mm / 1.75"
Inner diameter: 31.75mm / 1.25"
Thickness: 3.25mm / 0.13"
Weight: 4.2g
EngineeredinNYCAdafruit®

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