WS2812 datasheet(81/98 Pages) RASPBERRY-PI

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WS2812 Datasheet(PDF) 81 Page - Raspberry Pi Holdings PLC

Part #	WS2812

Description	Created by Phillip Burgess

PDF	98 Pages

Scroll/Zoom	100%

Manufacturer	RASPBERRY-PI [Raspberry Pi Holdings PLC]

Direct Link	https://www.raspberrypi.com/

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81 / 98 page

Writing Your Own Library

The WS2812 datasheet (https://adafru.it/cDB) explains the data transmission protocol. This is a

self-clocking signal —

there’s only one wire, not separate data and clock lines. “1” and “0” bits are indicated by varying the duty cycle of a

fixed-frequency square wave.

There’s a math goof in the datasheet’s timing values. Use these figures instead:

Note that there’s nearly 25% “wiggle room” in the timing. So if your code can’t match the recommended times exactly,

it’s usually okay, as long as it’s close.

There are three bytes of data for each pixel. These should be issued in green, red, blue order, with the most-significant

https://learn.adafruit.com/adafruit-neopixel-uberguide

Page 84 of 101

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