# Processing, Raspberry Pi, and DotStar/neopixel

**URL:** <https://discourse.processing.org/t/processing-raspberry-pi-and-dotstar-neopixel/5608>\
**Category:** Processing for Pi\
**Created:** [November 16, 2018, 5:47pm UTC](https://discourse.processing.org/t/processing-raspberry-pi-and-dotstar-neopixel/5608 "2018-11-16T17:47:32Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![bluemoon](https://avatars.discourse-cdn.com/v4/letter/b/bc79bd/32.png) [@bluemoon](https://discourse.processing.org/u/bluemoon)\
**Post date:** [November 16, 2018, 5:47pm UTC](https://discourse.processing.org/t/processing-raspberry-pi-and-dotstar-neopixel/5608/1 "2018-11-16T17:47:32Z")

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Hey Folks,

Has anyone used DotStar and NeoPixel LEDs with Processing and Raspberry Pi? It should be possible since Processing can access the GPIO but there’s not a library that I can find. Thanks for the help!

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**Author:** ![matheplica](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.processing.org/matheplica/32/21035_2.png) [@matheplica](https://discourse.processing.org/u/matheplica)\
**Post date:** [November 17, 2018, 2:49pm UTC](https://discourse.processing.org/t/processing-raspberry-pi-and-dotstar-neopixel/5608/2 "2018-11-17T14:49:26Z")

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I found this [neo pi tuto](https://thepihut.com/blogs/raspberry-pi-tutorials/using-neopixels-with-the-raspberry-pi?utm_source=The+Pi+Hut&utm_campaign=e6907a7d7b-EMAIL_CAMPAIGN_2018_10_19_COPY_01&utm_medium=email&utm_term=0_a4028431b8-e6907a7d7b-77586981&mc_cid=e6907a7d7b&mc_eid=78d4711b43)  
and the [gpio reference](https://pi.processing.org/reference/)

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**Author:** ![AndreasDora](https://avatars.discourse-cdn.com/v4/letter/a/5fc32e/32.png) [@AndreasDora](https://discourse.processing.org/u/AndreasDora)\
**Post date:** [November 20, 2018, 12:15am UTC](https://discourse.processing.org/t/processing-raspberry-pi-and-dotstar-neopixel/5608/3 "2018-11-20T00:15:49Z")

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Neopixel need a very time accurate signal, that the Pi can’t provide over its GIPIOs.  
If you want to use Processing with Neopixel (and the Pi), I can recommend a Driverboard called FadeCandy by Micah Scott. It comes with a nice Processing Library, a lot of examples and good documentation.  
The FadeCandy Library takes really good care about things like color dithering so the LEDs look even nicer.  
I made good experience using FadeCandy with a Raspberry 2B and WS2812B (Neopixel).

APA102 are not fully supported.