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'llgetvery
weirdresults.Our
AdafruitNeoPixellibrarydoessupportRGBWbutifyou'reusingsomethingelse,justbeawarethatit
mightrequiresomehacking.
OurdetailedNeoPixelUberguidehaseverythingyouneedtouseNeoPixelsinanyshapeandsize.
Includingready‐to‐golibrary&examplecodefortheArduino
UNO/Duemilanove/Diecimila,
Flora/Micro/Leonardo,Trinket/Gemma,ArduinoDue&ArduinoMega/ADK(allversions)
Comes with one quarter ring of 15 x individually addressable RGB LEDs assembled and
tested.We recommend you buy four to build the full circle as this is just the 1/4 of the circle.
Technical Details
Outer diameter of full circle (four put together): 157mm / 6.2"
Inner diameter of full circle (four put together): 145mm / 5.7"
Thickness: 3.25mm / 0.13"
Weight of one individual quarter: 4.1g
EngineeredinNYCAdafruit®