# RasPi NeoPixel problem

**URL:** <https://discourse.nodered.org/t/raspi-neopixel-problem/22950>\
**Category:** General\
**Created:** [10 March 2020 22:13 UTC](https://discourse.nodered.org/t/raspi-neopixel-problem/22950 "2020-03-10T22:13:46Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Trying\_to\_learn](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/trying_to_learn/32/28400_2.png) [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Post date:** [10 March 2020 22:13 UTC](https://discourse.nodered.org/t/raspi-neopixel-problem/22950/1 "2020-03-10T22:13:46Z")

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I probably deserve this, but it has me confused.

I _killed_ a machine the other night, and had to rebuild it.

It isn't complicated for hardware, but I am getting a strange error.

Setup - hardware:  
RasPi 3b Buster.  
NeoPixel strip of LEDs.  
Level converter for LEDs.

Flow - breakdown:  
Sets LEDs per what is happening.

To the best of my knowledge I installed all the same nodes.

I have the `node-red-node-pi-neopixel` and `node-red-node-pi-gpio` installed - latest versions.  
Though it kind of gets me it is `pi-gpio` and there is an error about `rpi_ws2801x` is referenced below.

This is what I see when I start Node-Red:  
Note last couple of lines.

```auto
pi@MusicPi:~/.node-red$ node-red-start

Start Node-RED
 
Once Node-RED has started, point a browser at http://192.168.0.82:1880
On Pi Node-RED works better with the Firefox or Chrome browser
 
Use node-red-stop to stop Node-RED
Use node-red-start to start Node-RED again
Use node-red-log to view the recent log output
Use sudo systemctl enable nodered.service to autostart Node-RED at every boot
Use sudo systemctl disable nodered.service to disable autostart on boot
 
To find more nodes and example flows - go to http://flows.nodered.org
 
Starting as a systemd service.
11 Mar 09:01:53 - [info]
Welcome to Node-RED
===================
11 Mar 09:01:53 - [info] Node-RED version: v1.0.3
11 Mar 09:01:53 - [info] Node.js version: v10.15.2
11 Mar 09:01:53 - [info] Linux 4.19.97-v7+ arm LE
11 Mar 09:01:57 - [info] Loading palette nodes
Traceback (most recent call last):
  File "<string>", line 1, in <module>
ImportError: No module named rpi_ws281x
11 Mar 09:02:01 - [warn] rpi-neopixels : rpi-gpio.errors.ignorenode

```

Sorry folks. This should be simple.

It did work. I just seem to be missing a node, but I can't resolve the name from that error.

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<div class="post-metadata">

**Author:** ![dceejay](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/dceejay/32/38_2.png) [@dceejay](https://discourse.nodered.org/u/dceejay)\
**Post date:** [10 March 2020 22:33 UTC](https://discourse.nodered.org/t/raspi-neopixel-problem/22950/2 "2020-03-10T22:33:31Z")

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And did you also reinstall the prerequisites for the neopixel node ad pet the readme ?

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<div class="post-metadata">

**Author:** ![Trying\_to\_learn](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/trying_to_learn/32/28400_2.png) [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Post date:** [10 March 2020 23:00 UTC](https://discourse.nodered.org/t/raspi-neopixel-problem/22950/3 "2020-03-10T23:00:06Z")

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Thanks.

I missed that.

Re-builds are not my favourite thing.

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [24 March 2020 23:05 UTC](https://discourse.nodered.org/t/raspi-neopixel-problem/22950/4 "2020-03-24T23:05:46Z")

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