# Neopixel problems **URL:** \ **Category:** General Discussion\ **Created:** [November 20, 2024, 11:47am UTC](https://klipper.discourse.group/t/neopixel-problems/20165 "2024-11-20T11:47:40Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![Quad121](https://avatars.discourse-cdn.com/v4/letter/q/5fc32e/32.png) [@Quad121](https://klipper.discourse.group/u/Quad121)\ **Post date:** [November 20, 2024, 11:47am UTC](https://klipper.discourse.group/t/neopixel-problems/20165/1 "2024-11-20T11:47:40Z")
### Basic Information: Printer Model: Voron 2.4r2 MCU / Printerboard:Octopus v1.1 Host / SBC rpi 4b klippy.log [klippy.log](https://klipper.discourse.group/uploads/short-url/9AVh3oVCCB1N5HVFkxLwHMrdIt8.log) (6.6 MB) _Fill out above information and_ **_in all cases attach your_ `klippy.log` _file_** (use zip to compress it, if too big). _Pasting your_ `printer.cfg` _is **not** needed_ _ **Be sure to check our “Knowledge Base” Category first. Most relevant items, e.g. error messages, are covered there** _ ### Describe your issue: …I’ve had trouble with my previous install of BTT Neopixels so purchased a set of Mellow ones. But they don’t seem to light correctly, don’t know if it’s something to do with the config. I’m using the config from the BTT Neopixels so don’t know if this is the problem? [stealthburner\_leds.cfg](https://klipper.discourse.group/uploads/short-url/ZdZ4xJTHhmuxaB9SzlAAJDzHV.cfg) (10.0 KB) The old Neopixel where these ones:- ![IMG_0117](https://global.discourse-cdn.com/free1/uploads/klipper/original/2X/2/293b8bf1a8d7f8a849db3c6f2cd2388735f646cb.jpeg) And the replacement are these:- ![IMG_0116](https://global.discourse-cdn.com/free1/uploads/klipper/original/2X/f/fbbc163cb7c88f651122d7a9567ed47dd5a0e6cd.jpeg) ---
**Author:** ![mykepredko](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/mykepredko/32/2085_2.png) [@mykepredko](https://klipper.discourse.group/u/mykepredko)\ **Post date:** [November 20, 2024, 4:10pm UTC](https://klipper.discourse.group/t/neopixel-problems/20165/2 "2024-11-20T16:10:27Z")
> [@Quad121](#): > > …I’ve had trouble with my previous install of BTT Neopixels so purchased a set of Mellow ones. But they don’t seem to light correctly, don’t know if it’s something to do with the config. I’m using the config from the BTT Neopixels so don’t know if this is the problem? Could you be more specific in explaining what you mean by “don’t seem to light correctly”? Now, from your `klippy.log`, it looks like you are have a CAN bus toolhead controller - shouldn’t your NeoPixels be connected to this? And, if they are, shouldn’t you be specifying that in your `[neopixel` statement? ---
**Author:** ![Quad121](https://avatars.discourse-cdn.com/v4/letter/q/5fc32e/32.png) [@Quad121](https://klipper.discourse.group/u/Quad121)\ **Post date:** [November 20, 2024, 5:01pm UTC](https://klipper.discourse.group/t/neopixel-problems/20165/3 "2024-11-20T17:01:44Z")
The ebb2209 which I’m using isn’t working has no output so I’ve had to run a wire from the Toolhead to the mainboard. To your first question, the logo seems to only light the two lights at the hot end don’t illuminate! ---
**Author:** ![mykepredko](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/mykepredko/32/2085_2.png) [@mykepredko](https://klipper.discourse.group/u/mykepredko)\ **Post date:** [November 20, 2024, 6:22pm UTC](https://klipper.discourse.group/t/neopixel-problems/20165/4 "2024-11-20T18:22:57Z")
So what I would recommend doing is: 1. Commenting out the `[include stealthburner_leds]` statement in your `printer.cfg`. 2. In your `printer.cfg` adding the statement: ```auto [neopixel sb_leds] pin = PB6 chain_count = 3 color_order = GRBW initial_red = 1.0 initial_green = 0.6 initial_blue = 1.0 initial_white = 0.6 ``` Let’s see if all three LEDs come up and if you can change all their colours and brightness (using the sliders in the Mainsail interface). If they all light up and can be controlled, then the problem is with your `stealthburner_leds.cfg` macros if one doesn’t light, then you have a wiring problem. ---
**Author:** ![Quad121](https://avatars.discourse-cdn.com/v4/letter/q/5fc32e/32.png) [@Quad121](https://klipper.discourse.group/u/Quad121)\ **Post date:** [November 23, 2024, 5:50pm UTC](https://klipper.discourse.group/t/neopixel-problems/20165/5 "2024-11-23T17:50:22Z")
Thank you for your suggestion, unfortunately it still didn’t work. I tried changing the number of leds from 3 to 10 which has seemed to have solved the issue ---
**Author:** ![mykepredko](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/mykepredko/32/2085_2.png) [@mykepredko](https://klipper.discourse.group/u/mykepredko)\ **Post date:** [November 23, 2024, 6:05pm UTC](https://klipper.discourse.group/t/neopixel-problems/20165/6 "2024-11-23T18:05:14Z")
??? Did you change the LEDs? The information that you provided above has a string of three. ![image](https://global.discourse-cdn.com/free1/uploads/klipper/original/2X/4/4763136d326e6bd6533223509b118bc6dbec1119.jpeg) Is this not what you’re using? ---
**Author:** ![Quad121](https://avatars.discourse-cdn.com/v4/letter/q/5fc32e/32.png) [@Quad121](https://klipper.discourse.group/u/Quad121)\ **Post date:** [November 23, 2024, 6:16pm UTC](https://klipper.discourse.group/t/neopixel-problems/20165/7 "2024-11-23T18:16:20Z")
The replacement are the last picture posted The BigTreeTech are the old ones and the Mellow are the replacements ---
**Author:** ![mykepredko](https://yyz2.discourse-cdn.com/free1/user_avatar/klipper.discourse.group/mykepredko/32/2085_2.png) [@mykepredko](https://klipper.discourse.group/u/mykepredko)\ **Post date:** [November 23, 2024, 7:14pm UTC](https://klipper.discourse.group/t/neopixel-problems/20165/8 "2024-11-23T19:14:39Z")
Sorry, it wasn’t clear. Yes, if you’re using the second one, then you need to have a string of 10 (eight for the hexagonal piece, one more for each of the two others). Aren’t the last two meant to be individually controlled (ie aren’t they for lighting what’s beneath the nozzle)? ---
**Author:** ![Quad121](https://avatars.discourse-cdn.com/v4/letter/q/5fc32e/32.png) [@Quad121](https://klipper.discourse.group/u/Quad121)\ **Post date:** [November 23, 2024, 7:18pm UTC](https://klipper.discourse.group/t/neopixel-problems/20165/9 "2024-11-23T19:18:33Z")
I’ve got 1-8 for the logo and 9 + 10 for the nozzle lights [stealthburner\_leds.cfg](https://klipper.discourse.group/uploads/short-url/A8R2xkmoFPk2TMb9Rxpa8BxA25a.cfg) (10.0 KB) ---
**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/klipper/original/1X/64419bf2aac6639e6ef5cef200dcd456b0a01ac3.png) [@system](https://klipper.discourse.group/u/system)\ **Post date:** [December 24, 2024, 5:18am UTC](https://klipper.discourse.group/t/neopixel-problems/20165/10 "2024-12-24T05:18:58Z")
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