# Panel order remapping help

**URL:** https://rpi-rgb-led-matrix.discourse.group/t/panel-order-remapping-help/317
**Category:** Uncategorized
**Created:** [August 30, 2021, 2:31am UTC](https://rpi-rgb-led-matrix.discourse.group/t/panel-order-remapping-help/317 "2021-08-30T02:31:42Z")
**Posts on this page:** 4
**Page:** 1

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### Author: ![ksx11](https://avatars.discourse-cdn.com/v4/letter/k/bc79bd/32.png) [@ksx11](https://rpi-rgb-led-matrix.discourse.group/u/ksx11)
#### Post date: [August 30, 2021, 2:31am UTC](https://rpi-rgb-led-matrix.discourse.group/t/panel-order-remapping-help/317/1 "2021-08-30T02:31:42Z")

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I have managed to get a 3x panel array of GKGD-P8-40x20-2017B3 displaying. (multiplex option 17)  
The trouble is the panels are displaying in order 3 - 2 - 1 (yes they are plugged in correctly)  
ie. text to display is “123456789ABC”  
displays as “9ABC56781234”

Can someone help me with pixelmapping the panels to the correct order?

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### Author: ![raspberry.pi.maker](https://yyz2.discourse-cdn.com/free1/user_avatar/rpi-rgb-led-matrix.discourse.group/raspberry.pi.maker/32/138_2.png) [@raspberry.pi.maker](https://rpi-rgb-led-matrix.discourse.group/u/raspberry.pi.maker)
#### Post date: [September 2, 2021, 2:27pm UTC](https://rpi-rgb-led-matrix.discourse.group/t/panel-order-remapping-help/317/2 "2021-09-02T14:27:36Z")

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It seems that the hub75 cable connection should be done in the opposite direction.

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### Author: ![ksx11](https://avatars.discourse-cdn.com/v4/letter/k/bc79bd/32.png) [@ksx11](https://rpi-rgb-led-matrix.discourse.group/u/ksx11)
#### Post date: [October 8, 2021, 6:18am UTC](https://rpi-rgb-led-matrix.discourse.group/t/panel-order-remapping-help/317/3 "2021-10-08T06:18:48Z")

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It’s an addressing issue. Taking the 3rd panel out of the loop and I still get the same problem  
56781234. Cant reverse chain as the separate panels have specific in & out ports.  
The panel configuration was working correctly with the custom board that came with the unit  
(HD-W60-75)  
But the software to control it is rather limiting for my project.

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### Author: ![AxelH](https://avatars.discourse-cdn.com/v4/letter/a/cdc98d/32.png) [@AxelH](https://rpi-rgb-led-matrix.discourse.group/u/AxelH)
#### Post date: [October 8, 2021, 6:34am UTC](https://rpi-rgb-led-matrix.discourse.group/t/panel-order-remapping-help/317/4 "2021-10-08T06:34:18Z")

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Try to add a mirror condition in your command line :

```auto
--led-pixel-mapper=Mirror:H

```

[see here](https://github.com/hzeller/rpi-rgb-led-matrix#panel-arrangement)