Skip to content
An efficient micropython WS2812 (NeoPixel) driver
Branch: master
Clone or download
Fetching latest commit…
Cannot retrieve the latest commit at this time.
Permalink
Type Name Latest commit message Commit time
Failed to load latest commit information.
LICENSE
README.md
neoSPI.py

README.md

ws2812-SPI

An efficient micropython WS2812 (NeoPixel) driver

This library allows for easy access to a set of WS2812 RGB LEDs attached to a microcontroller running MicroPython using an SPI port. This (at least in theory) allows for more efficient and reliable delivery of the data compared to using "bit banging" of a regular IO line.

The NeoPixel object can be treated as a 2D array, pixel_count long and 3 wide. Pixels can be accessed as a 3-tuple or through their individual Green, Blue and Red components (in that order). It can also be accessed with 1D slice operations to read or write a list of 3-tuples and a single 3-tuple can be written to a whole slice to set a row of pixels to the same value.

sp = machine.SPI(1)
sp.init(baudrate=3200000)
np = NeoPixel(sp, 100)

# Blank the whole set
np[:] = (0,0,0)
# Set the first 10 pixels to dark blue
np[0:10] = (0,0,40)
# Set the second pixel to green
np[1] = (128,0,0)
# Set the third pixel's red value to full brightness
np[2,2] = 255
# Copy the 2nd pixel to the 5th
np[4] = np[1]
# Copy the first 16 pixels to the last 16 pixels
np[-16:] = np[:16]
# Send the data out to the pixels
np.write()
You can’t perform that action at this time.