NeoPixel

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flyntm
 
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Joined: Sat Oct 03, 2015 7:27 pm

NeoPixel

Post by flyntm »

I'm a newbie...
I'm trying to hook up NeoPixels on a Raspberry PI following Tony DiCola's instructions. I have compiled and installed the rpi_ws281x library per the instructions. When I run StrandTest.py I get an "Import error: No module named neopixel" I can see neopixel.py in the rpi_ws281x/python directory. What am I doing wrong?

Also, I noticed a disclaimer that this library may not work on the Pi 2. Is that the case? Any suggestions?

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tdicola
 
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Joined: Thu Oct 17, 2013 9:11 pm

Re: NeoPixel

Post by tdicola »

Make sure to run the 'sudo python setup.py install' step from this page: https://learn.adafruit.com/neopixels-on ... i/software That will install the library on the Pi so you can import it with the 'import neopixel' command.

For the Pi 2 yep unfortunately the library doesn't support it right now. There is a fork that added Pi 2 support here: https://github.com/richardghirst/rpi_ws281x It hasn't been integrated back into the main library yet though so you'll need to grab it and install it instead of the jgarff version from the tutorial.

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hansi
 
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Joined: Wed Oct 07, 2015 5:17 pm

Re: NeoPixel

Post by hansi »

Hi, i found this nice tutorial, but there is a part i don't get.
Also be aware the rpi_ws281x library only supports GRB NeoPixels/WS281x LEDs right now. Support for RGB and BGR will likely come in the future (but pull requests are happily accepted!).
is there something like GRB, BGR LEDs? if not, i don't get the point of this quote :-/

this tutorial should work with the regular Adafruit NeoPixel Digital RGB LED Strip?

thanks for the tutorial ^^

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