# @iiot2k/node-red-gpiox / Raspberry Pi / "chip error"

**URL:** <https://discourse.nodered.org/t/iiot2k-node-red-gpiox-raspberry-pi-chip-error/91055>\
**Category:** General\
**Tags:** raspberry-pi\
**Created:** [17 September 2024 20:38 UTC](https://discourse.nodered.org/t/iiot2k-node-red-gpiox-raspberry-pi-chip-error/91055 "2024-09-17T20:38:41Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![irotier](https://avatars.discourse-cdn.com/v4/letter/i/aca169/32.png) [@irotier](https://discourse.nodered.org/u/irotier)\
**Post date:** [17 September 2024 20:38 UTC](https://discourse.nodered.org/t/iiot2k-node-red-gpiox-raspberry-pi-chip-error/91055/1 "2024-09-17T20:38:41Z")

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I'm runnning Node-red on a Raspberry Pi 3b+ in 64 bit (Python 3.11.2). Because i have flickering in my LEDs with the onboard gpio-pwm-node, i tried node-red-gpiox by iiot2k. The Node worked perfectly fine, but as i played around with some other Nodes and Settings, it stopped working. So i reinstalled Node-Red and the gpiox-Node, but i can't get it to work and the only error-message i'll get is "chip error" and i don't know what to do, since i'm absolutely new to Node-Red and Raspberry (in the past i realized some Proects with Arduino/esp32).  
It seems to make no difference wich pin i try to use, the error ist the same all the time (at the Moment i try to work with gpio13, wich worked fine before).

One more thing, that makes me wondering is, that i can use the build-in gpio-node for pwm. But then i have the flickering again, wich isn't nice to look at.

Some more System-Infos and the Error from the Raspberry-Terminal:

17 Sep 18:47:50 - [info] Node-RED version: v4.0.2  
17 Sep 18:47:50 - [info] Node.js version: v20.17.0  
17 Sep 18:47:50 - [info] Linux 6.6.47+rpt-rpi-v8 arm64 LE  
17 Sep 18:47:50 - [info] Loading palette nodes  
...  
17 Sep 18:47:56 - [error] [iiot2k-gpiox-pwm:gpio16] chip error

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**Author:** ![marcus-j-davies](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/marcus-j-davies/32/103435_2.png) [@marcus-j-davies](https://discourse.nodered.org/u/marcus-j-davies)\
**Post date:** [17 September 2024 20:42 UTC](https://discourse.nodered.org/t/iiot2k-node-red-gpiox-raspberry-pi-chip-error/91055/2 "2024-09-17T20:42:31Z")

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Add to the issue already logged.  
the author will need to address it

> <https://github.com/iiot2k/gpiox/issues/4>
>
> I'm using a Raspberry Pi 3B+ and the latest Node-Red on 64bit. The Node worked p…erfectly fine, but as i played around with some other Nodes and Settings, it stopped working. So i reinstalled Node-Red and your gpiox-Node, but i can't get it to work and the only error-message i'll get is "chip error" and i don't know what to do... 
> It seems to make no difference wich pin i try to use, the error ist the same all the time (at the Moment i try to work with gpio13, wich worked fine before
> 
> One more thing, that makes me wondering is, that i can use the build-in gpio-node for pwm. The Problem is, with this Node I have some wild flickering in my LEDs, so i really would like to use yours instead.
> 
> Edit:
> 17 Sep 18:47:50 - \[info\] Node-RED version: v4.0.2
> 17 Sep 18:47:50 - \[info\] Node.js version: v20.17.0
> 17 Sep 18:47:50 - \[info\] Linux 6.6.47+rpt-rpi-v8 arm64 LE
> 17 Sep 18:47:50 - \[info\] Loading palette nodes
> ...
> 17 Sep 18:47:56 - \[error\] \[iiot2k-gpiox-pwm:gpio16\] chip error

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<div class="post-metadata">

**Author:** ![irotier](https://avatars.discourse-cdn.com/v4/letter/i/aca169/32.png) [@irotier](https://discourse.nodered.org/u/irotier)\
**Post date:** [17 September 2024 20:46 UTC](https://discourse.nodered.org/t/iiot2k-node-red-gpiox-raspberry-pi-chip-error/91055/3 "2024-09-17T20:46:57Z")

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Yes i already posted it in the github-repository, but i do have the hope, that somebody here had the same issue and knows how to solve it ... maybe something is missing in my config-file or any other stupid thing ...

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<div class="post-metadata">

**Author:** ![marcus-j-davies](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/marcus-j-davies/32/103435_2.png) [@marcus-j-davies](https://discourse.nodered.org/u/marcus-j-davies)\
**Post date:** [17 September 2024 20:48 UTC](https://discourse.nodered.org/t/iiot2k-node-red-gpiox-raspberry-pi-chip-error/91055/4 "2024-09-17T20:48:58Z")

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I'm not a hardware guy - so maybe someone has an idea (share your flow perhaps), if not - it will need to wait for the author to respond

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**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [16 December 2024 20:49 UTC](https://discourse.nodered.org/t/iiot2k-node-red-gpiox-raspberry-pi-chip-error/91055/5 "2024-12-16T20:49:55Z")

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