adafruit_pixelbuf – A fast RGB(W) pixel buffer library for like NeoPixel and DotStar

The adafruit_pixelbuf module provides the PixelBuf class to accelerate RGB(W) strip/matrix manipulation, such as DotStar and Neopixel.

Also available as _pixelbuf. This usage has been deprecated.

Byteorders are configured with strings, such as “RGB” or “RGBD”.

Available on these boards
  • AITHinker ESP32-C3S_Kit
  • ARAMCON Badge 2019
  • ARAMCON2 Badge
  • ATMegaZero ESP32-S2
  • Adafruit CLUE nRF52840 Express
  • Adafruit Circuit Playground Bluefruit
  • Adafruit Circuit Playground Express 4-H
  • Adafruit CircuitPlayground Express
  • Adafruit CircuitPlayground Express with Crickit libraries
  • Adafruit EdgeBadge
  • Adafruit Feather Bluefruit Sense
  • Adafruit Feather ESP32-S2 TFT
  • Adafruit Feather ESP32S2
  • Adafruit Feather M0 Express
  • Adafruit Feather M0 Express with Crickit libraries
  • Adafruit Feather M4 CAN
  • Adafruit Feather M4 Express
  • Adafruit Feather MIMXRT1011
  • Adafruit Feather RP2040
  • Adafruit Feather STM32F405 Express
  • Adafruit Feather nRF52840 Express
  • Adafruit FunHouse
  • Adafruit Grand Central M4 Express
  • Adafruit Hallowing M4 Express
  • Adafruit ItsyBitsy M0 Express
  • Adafruit ItsyBitsy M4 Express
  • Adafruit ItsyBitsy RP2040
  • Adafruit ItsyBitsy nRF52840 Express
  • Adafruit KB2040
  • Adafruit LED Glasses Driver nRF52840
  • Adafruit Macropad RP2040
  • Adafruit MagTag
  • Adafruit Matrix Portal M4
  • Adafruit Metro ESP32S2
  • Adafruit Metro M0 Express
  • Adafruit Metro M4 Airlift Lite
  • Adafruit Metro M4 Express
  • Adafruit Metro nRF52840 Express
  • Adafruit Monster M4SK
  • Adafruit NeoKey Trinkey M0
  • Adafruit NeoPixel Trinkey M0
  • Adafruit ProxLight Trinkey M0
  • Adafruit PyGamer
  • Adafruit PyPortal
  • Adafruit PyPortal Pynt
  • Adafruit PyPortal Titano
  • Adafruit Pybadge
  • Adafruit QT Py ESP32S2
  • Adafruit QT Py M0 Haxpress
  • Adafruit QT Py RP2040
  • Adafruit QT2040 Trinkey
  • Adafruit Rotary Trinkey M0
  • Adafruit Slide Trinkey M0
  • Adafruit Trellis M4 Express
  • AloriumTech Evo M51
  • Arduino Nano 33 BLE
  • Arduino Nano RP2040 Connect
  • Artisense Reference Design RD00
  • AtelierDuMaker nRF52840 Breakout
  • BLE-SS dev board Multi Sensor
  • BastBLE
  • BastWiFi
  • BlueMicro840
  • CP Sapling M0 w/ SPI Flash
  • CP32-M4
  • Capable Robot Programmable USB Hub
  • Cedar Grove StringCar M0 Express
  • Challenger NB RP2040 WiFi
  • Challenger RP2040 LTE
  • Challenger RP2040 WiFi
  • Circuit Playground Express Digi-Key PyCon 2019
  • CircuitBrains Basic
  • CircuitBrains Deluxe
  • CrumpS2
  • Cytron Maker Pi RP2040
  • ESP 12k NodeMCU
  • Electronic Cats Hunter Cat NFC
  • Electronut Labs Blip
  • Electronut Labs Papyr
  • EncoderPad RP2040
  • Espruino Pico
  • Espruino Wifi
  • Feather ESP32S2 without PSRAM
  • Feather MIMXRT1011
  • Feather MIMXRT1062
  • FeatherS2
  • FeatherS2 Neo
  • FeatherS2 PreRelease
  • Fomu
  • Franzininho WIFI w/Wroom
  • Franzininho WIFI w/Wrover
  • Gravitech Cucumber M
  • Gravitech Cucumber MS
  • Gravitech Cucumber R
  • Gravitech Cucumber RS
  • HMI-DevKit-1.1
  • Hacked Feather M0 Express with 8Mbyte SPI flash
  • HalloWing M0 Express
  • HiiBot BlueFi
  • IMXRT1010-EVK
  • IkigaiSense Vita nRF52840
  • Kaluga 1
  • LILYGO TTGO T8 ESP32-S2 w/Display
  • MDBT50Q-DB-40
  • MDBT50Q-RX Dongle
  • MORPHEANS MorphESP-240
  • MakerDiary nRF52840 MDK
  • MakerDiary nRF52840 MDK USB Dongle
  • Makerdiary M60 Keyboard
  • Makerdiary Pitaya Go
  • Makerdiary nRF52840 M.2 Developer Kit
  • Melopero Shake RP2040
  • Metro MIMXRT1011
  • MicroDev microC3
  • MicroDev microS2
  • Mini SAM M4
  • NUCLEO STM32F746
  • NUCLEO STM32F767
  • NUCLEO STM32H743
  • OPENMV-H7 R1
  • Oak Dev Tech BREAD2040
  • Oak Dev Tech PixelWing ESP32S2
  • Open Hardware Summit 2020 Badge
  • PCA10056 nRF52840-DK
  • PCA10059 nRF52840 Dongle
  • PYB LR Nano V2
  • Particle Argon
  • Particle Boron
  • Particle Xenon
  • Pimoroni Interstate 75
  • Pimoroni Keybow 2040
  • Pimoroni PGA2040
  • Pimoroni Pico LiPo (16MB)
  • Pimoroni Pico LiPo (4MB)
  • Pimoroni PicoSystem
  • Pimoroni Plasma 2040
  • Pimoroni Tiny 2040
  • PyCubedv04
  • PyCubedv04-MRAM
  • PyCubedv05
  • PyCubedv05-MRAM
  • PyKey60
  • PyboardV1_1
  • RP2040 Stamp
  • Raspberry Pi Pico
  • Robo HAT MM1 M4
  • S2Mini
  • S2Pico
  • SAM E54 Xplained Pro
  • SAM32v26
  • ST STM32F746G Discovery
  • STM32F411E_DISCO
  • STM32F412G_DISCO
  • Saola 1 w/Wroom
  • Saola 1 w/Wrover
  • Seeeduino Wio Terminal
  • Serpente
  • Silicognition LLC M4-Shim
  • SparkFun LUMIDrive
  • SparkFun MicroMod RP2040 Processor
  • SparkFun MicroMod SAMD51 Processor
  • SparkFun MicroMod nRF52840 Processor
  • SparkFun Pro Micro RP2040
  • SparkFun Pro nRF52840 Mini
  • SparkFun RedBoard Turbo
  • SparkFun STM32 MicroMod Processor
  • SparkFun Thing Plus - RP2040
  • SparkFun Thing Plus - SAMD51
  • Sprite_v2b
  • StackRduino M0 PRO
  • TG-Boards' Datalore IP M4
  • TG-Watch
  • Targett Module Clip w/Wroom
  • Targett Module Clip w/Wrover
  • Teensy 4.0
  • Teensy 4.1
  • Teknikio Bluebird
  • The Open Book Feather
  • TinkeringTech ScoutMakes Azul
  • TinyS2
  • Trinket M0 Haxpress
  • UARTLogger II
  • WarmBit BluePixel nRF52840
  • Winterbloom Big Honking Button
  • Winterbloom Sol
  • iMX RT 1020 EVK
  • iMX RT 1060 EVK
  • snekboard
  • nanoESP32-S2 w/Wrover
  • nanoESP32-S2 w/Wroom
  • nice!nano
  • stm32f411ce-blackpill
  • stm32f411ce-blackpill-with-flash

class adafruit_pixelbuf.PixelBuf(size: int, *, byteorder: str = 'BGR', brightness: float = 0, auto_write: bool = False, header: _typing.ReadableBuffer = b'', trailer: _typing.ReadableBuffer = b'')

A fast RGB[W] pixel buffer for LED and similar devices.

Create a PixelBuf object of the specified size, byteorder, and bits per pixel.

When brightness is less than 1.0, a second buffer will be used to store the color values before they are adjusted for brightness.

When P (PWM duration) is present as the 4th character of the byteorder string, the 4th value in the tuple/list for a pixel is the individual pixel brightness (0.0-1.0) and will enable a Dotstar compatible 1st byte for each pixel.

  • size (int) – Number of pixels

  • byteorder (str) – Byte order string (such as “RGB”, “RGBW” or “PBGR”)

  • brightness (float) – Brightness (0 to 1.0, default 1.0)

  • auto_write (bool) – Whether to automatically write pixels (Default False)

  • header (ReadableBuffer) – Sequence of bytes to always send before pixel values.

  • trailer (ReadableBuffer) – Sequence of bytes to always send after pixel values.

bpp :int

The number of bytes per pixel in the buffer (read-only)

brightness :float

Float value between 0 and 1. Output brightness.

When brightness is less than 1.0, a second buffer will be used to store the color values before they are adjusted for brightness.

auto_write :bool

Whether to automatically write the pixels after each update.

byteorder :str

byteorder string for the buffer (read-only)


Transmits the color data to the pixels so that they are shown. This is done automatically when auto_write is True.

fill(self, color: Union[int, Tuple[int, int, int], Tuple[int, int, int, float]])None

Fills the given pixelbuf with the given color.

__getitem__(self, index: slice)Union[Tuple[Tuple[int, int, int], Ellipsis], Tuple[Tuple[int, int, int, float], Ellipsis]]
__getitem__(self, index: int)Union[Tuple[int, int, int], Tuple[int, int, int, float]]

Returns the pixel value at the given index as a tuple of (Red, Green, Blue[, White]) values between 0 and 255. When in PWM (DotStar) mode, the 4th tuple value is a float of the pixel intensity from 0-1.0.

__setitem__(self, index: slice, value: Tuple[Union[int, Tuple[float, Ellipsis], List[float]], Ellipsis])None
__setitem__(self, index: slice, value: List[Union[int, Tuple[float, Ellipsis], List[float]]])None
__setitem__(self, index: int, value: Union[int, Tuple[float, Ellipsis], List[float]])None

Sets the pixel value at the given index. Value can either be a tuple or integer. Tuples are The individual (Red, Green, Blue[, White]) values between 0 and 255. If given an integer, the red, green and blue values are packed into the lower three bytes (0xRRGGBB). For RGBW byteorders, if given only RGB values either as an int or as a tuple, the white value is used instead when the red, green, and blue values are the same.