https://github.com/nullobject/papilio-neopixel

https://github.com/nullobject/papilio-neopixel

Last synced: 3 months ago
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• Host: GitHub
• URL: https://github.com/nullobject/papilio-neopixel
• Owner: nullobject
• Created: 2013-11-23T04:10:27.000Z (about 12 years ago)
• Default Branch: master
• Last Pushed: 2014-03-01T11:53:35.000Z (almost 12 years ago)
• Last Synced: 2024-12-28T04:46:51.901Z (about 1 year ago)
• Language: VHDL
• Size: 250 KB
• Stars: 2
• Watchers: 4
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# Papilio NeoPixel

This circuit implements a PicoBlaze microcontroller which controls a

[NeoPixel](http://learn.adafruit.com/adafruit-neopixel-uberguide) LED.

Address and value data is clocked out from the PicoBlaze microcontroller (U1)

into the 2-phase data demultiplexer (U2) and stored in the dual-port RAM (U3).

The WS2812 driver (U4) continually refreshes the NeoPixel LED data from RAM.

![Schematic](/images/schematic.png)

## References

* [WS2812 datasheet](http://www.adafruit.com/datasheets/WS2812.pdf)

* [WS2812 RGB LED string driver](http://opencores.org/project,ws2812)