https://github.com/nickovs/ws2812-SPI

An efficient micropython WS2812 (NeoPixel) driver
https://github.com/nickovs/ws2812-SPI

Last synced: 2 months ago
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An efficient micropython WS2812 (NeoPixel) driver

• Host: GitHub
• URL: https://github.com/nickovs/ws2812-SPI
• Owner: nickovs
• License: apache-2.0
• Created: 2016-12-02T22:56:54.000Z (over 7 years ago)
• Default Branch: master
• Last Pushed: 2020-10-30T01:06:33.000Z (over 3 years ago)
• Last Synced: 2024-01-31T02:43:09.738Z (5 months ago)
• Language: Python
• Size: 7.81 KB
• Stars: 25
• Watchers: 5
• Forks: 5
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Lists

• awesome-micropython - ws2812-SPI - An efficient MicroPython WS2812 (NeoPixel) driver. (Libraries / Display)

README

        
# 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](https://micropython.org) 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.

```python

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()

```