Ws2812x no GRB setting

sickrandy · Jan 4th 2026

Hi everyone,

I’m trying to properly configure color order in Hyperion NG with ws281x on Raspberry Pi, but I’m stuck in what looks like a color-order loop and I’d really appreciate some help or confirmation if this is a known limitation.

Hardware / setup

Raspberry Pi 3B+
Hyperion NG (HyperBian, recent version)
LED strip: 3-wire (VCC, GND, DATA), WS2812/SK6812 compatible
Connected directly to GPIO 18
Controller: ws281x

Problem

I cannot obtain correct RGB primary colors with any available RGB byte order option.

The GRB option is not present in the dropdown.

The RGB Byte Order Wizard gives incorrect results (rotated colors, never correct primaries).

Color test results (Color Calibration → Test Colors)

I tested all permutations (RGB, RBG, BGR, BRG, GBR) with clean calibration (no color remapping) and reboot after each change.

Examples of consistent results:

With GBR:

Send Red (255,0,0) → Blue
Send Green (0,255,0) → Green
Send Blue (0,0,255) → Red

→ Green correct, Red/Blue swapped

With BGR:

Send Green → Red
Send Red → Blue
Send Blue → Green

→ cyclic rotation (R → B → G → R)

With RBG:

Send Blue → Red
Send Red → Green
Send Green → Blue

→ again a cyclic rotation

No configuration results in:

Red → Red
Green → Green
Blue → Blue

Wizard behavior

The RGB Byte Order Wizard never converges to a correct mapping.

It always ends with a configuration that still produces rotated primaries.

Question

Is this a known limitation of ws281x on GPIO18 in Hyperion NG?
Why is GRB not selectable, even though the LEDs are clearly GRB?

Any clarification from someone familiar with Hyperion internals or ws281x behavior would be greatly appreciated.

Thanks in advance.

Ambient_theater77 · Jan 4th 2026

what you can do:

login as expert level and download the Json settings.

then alternate the settings you want and import them in Hyperion.NG

You have a big chance it would work then.

also put a line in config.txt

dtparam=audio=off

because WS281x driver uses also audio input on pwm

Lord-Grey · Jan 5th 2026

Quote

sickrandy The GRB option is not present in the dropdown.

Can you show me a screenshot of the Color Order of the LED-Device.
You need to switch to Expert setting.

I do see all six combinations....

Quote

Color test results (Color Calibration → Test Colors)

You should not use color calibration, but the RGB Byte Order wizard to get the Byte Order configured easily.

sickrandy · Jan 5th 2026

This is my situation, the setting i need is GRB based on my tests.
I've already tried to use the wizard but the results are absolutely wrong, even if the test go okay, when i use the leds out of the wizard mode the doesn't follow the right colors.
The wizard select the RGB configuration, the last in the dropdown.

These are all my setting, every advice is appreciated. Thank you all.

Quote from Lord-Grey

You should not use color calibration

Sorry, I didn't express myself well. I meant that I tested the colors using "effects" on the LEDs.

Quote from Ambient_theater77

login as expert level and download the Json settings.

i can't find where to download the json.

Ambient_theater77 · Jan 5th 2026

i show you.

regular settings tab as expert user.

scroll down and you see the import/export option.

choose your file and export.

now open Json with texteditor and save after changes.

import the file and reboot Hyperion.NG

sickrandy · Jan 5th 2026

Quote from Ambient_theater77

i show you.

regular settings tab as expert user

Very thanks to you. Now my color are correts but only on color/effects section, when the led are driven by usb capture i have

Screen | Led

Magenta | Green

Cyan | Pink

Green | Pink
Red | Blue
Blue | Orange

Okay news, playing with "Hardware hue control" i've achieved an accettable result. Thanks to all of you.

If anyone wants to give me advice on the settings I posted earlier it would be appreciated.

pclin · Jan 5th 2026

Please post the output of usb-devices and v4l2-ctl --all best in Code or Spoiler.

Code: usb-devices

[20:57 root@dreamtwo ~] > usb-devices

T:  Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#=  1 Spd=480  MxCh= 2
D:  Ver= 2.00 Cls=09(hub  ) Sub=00 Prot=01 MxPS=64 #Cfgs=  1
P:  Vendor=1d6b ProdID=0002 Rev=04.09
S:  Manufacturer=Linux 4.9 xhci-hcd
S:  Product=xHCI Host Controller
S:  SerialNumber=xhci-hcd.0.auto
C:  #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=0mA
I:  If#= 0 Alt= 0 #EPs= 1 Cls=09(hub  ) Sub=00 Prot=00 Driver=hub
E:  Ad=81(I) Atr=03(Int.) MxPS=   4 Ivl=256ms

T:  Bus=01 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#=  2 Spd=480  MxCh= 0
D:  Ver= 2.00 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs=  1
P:  Vendor=eba4 ProdID=7588 Rev=03.28
S:  Manufacturer=USB3.0 HD Audio Capture
S:  Product=USB3.0 HD Video Capture
S:  SerialNumber=HU123450
C:  #Ifs= 4 Cfg#= 1 Atr=80 MxPwr=200mA
I:  If#= 0 Alt= 0 #EPs= 0 Cls=01(audio) Sub=01 Prot=00 Driver=snd-usb-audio
I:  If#= 1 Alt= 0 #EPs= 0 Cls=01(audio) Sub=02 Prot=00 Driver=snd-usb-audio
I:  If#= 2 Alt= 0 #EPs= 0 Cls=0e(video) Sub=01 Prot=00 Driver=uvcvideo
I:  If#= 3 Alt= 1 #EPs= 1 Cls=0e(video) Sub=02 Prot=00 Driver=uvcvideo
E:  Ad=82(I) Atr=01(Isoc) MxPS=1024 Ivl=125us

T:  Bus=02 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#=  1 Spd=5000 MxCh= 1
D:  Ver= 3.00 Cls=09(hub  ) Sub=00 Prot=03 MxPS= 9 #Cfgs=  1
P:  Vendor=1d6b ProdID=0003 Rev=04.09
S:  Manufacturer=Linux 4.9 xhci-hcd
S:  Product=xHCI Host Controller
S:  SerialNumber=xhci-hcd.0.auto
C:  #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=0mA
I:  If#= 0 Alt= 0 #EPs= 1 Cls=09(hub  ) Sub=00 Prot=00 Driver=hub
E:  Ad=81(I) Atr=03(Int.) MxPS=   4 Ivl=12ms

T:  Bus=02 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#=  2 Spd=5000 MxCh= 0
D:  Ver= 3.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 9 #Cfgs=  1
P:  Vendor=0781 ProdID=5583 Rev=01.00
S:  Manufacturer=SanDisk
S:  Product=Ultra Fit
S:  SerialNumber=4C530000180221109565
C:  #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=896mA
I:  If#= 0 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage
E:  Ad=02(O) Atr=02(Bulk) MxPS=1024 Ivl=0ms
E:  Ad=81(I) Atr=02(Bulk) MxPS=1024 Ivl=0ms

Display More

v4l2-ctl --all

regards pclin

Hardware / setup

Problem

Color test results (Color Calibration → Test Colors)

Wizard behavior

Question

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