Package: adafruit-circuitpython-neopixel
Adafruit CircuitPython NeoPixelHigher level NeoPixel driver that presents the strip as a sequence. This is a
supercharged version of the original MicroPython driver. Its now more like a
normal Python sequence and features slice support,reprandlensupport.Colors are stored as tuples by default. However, you can also use int hex syntax
to set values similar to colors on the web. For example,0x100000(#100000on the web) is equivalent to(0x10, 0, 0).NoteThe int hex API represents the brightness of the white pixel when
present by setting the RGB channels to identical values. For example, full
white is 0xffffff but is actually (0, 0, 0, 0xff) in the tuple syntax. Setting
a pixel value with an int will use the white pixel if the RGB channels are
identical. For full, independent, control of each color component use the
tuple syntax.DependenciesThis driver depends on:Adafruit CircuitPythonPlease ensure all dependencies are available on the CircuitPython filesystem.
This is easily achieved by downloadingthe Adafruit library and driver bundle.Installing from PyPIOn supported GNU/Linux systems like the Raspberry Pi, you can install the driver locallyfrom
PyPI. To install for current user:pip3installadafruit-circuitpython-neopixelTo install system-wide (this may be required in some cases):sudopip3installadafruit-circuitpython-neopixelTo install in a virtual environment in your current project:mkdirproject-name&&cdproject-namepython3-mvenv.venvsource.venv/bin/activatepip3installadafruit-circuitpython-neopixelUsage ExampleThis example demonstrates the library with the single built-in NeoPixel on theFeather M0 ExpressandMetro M0 Express.importboardimportneopixelpixels=neopixel.NeoPixel(board.NEOPIXEL,1)pixels[0]=(10,0,0)This example demonstrates the library with the ten built-in NeoPixels on theCircuit Playground Express. It turns
offauto_writeso that all pixels are updated at once when theshowmethod is called.importboardimportneopixelpixels=neopixel.NeoPixel(board.NEOPIXEL,10,auto_write=False)pixels[0]=(10,0,0)pixels[9]=(0,10,0)pixels.show()This example demonstrates using a single NeoPixel tied to a GPIO pin and with
apixel_orderto specify the color channel order. Note thatbppdoes not
need to be specified as it is computed from the suppliedpixel_order.importboardimportneopixelpixel=neopixel.NeoPixel(board.D0,1,pixel_order=neopixel.RGBW)pixel[0]=(30,0,20,10)Setup for sudo-less usage on Raspberry Pi boardsEnable both SPI and Serial port hardware (Serial interface). Do it byraspi-configtool or manually by addingdtparam=spi=on
enable_uart=1to the/boot/config.txtReboot the Pi to apply the changes - the hardware setup takes place during boot.Connect LED’s DIN toGPIO10(physical pin 19)When initializing theNeoPixelobjectalwaysdo it withboard.D10(GPIO10)importboardimportneopixelDATA_PIN=board.D10pixel=neopixel.NeoPixel(DATA_PIN,...)Now you can execute the code usingpythonwithoutsudoDocumentationAPI documentation for this library can be found onRead the Docs.For information on building library documentation, please check outthis guide.ContributingContributions are welcome! Please read ourCode of Conductbefore contributing to help this project stay welcoming.