**Author:** [@deadlift89](https://rpi-rgb-led-matrix.discourse.group/u/deadlift89)\
**Replies:** 30\
**Last updated:** [December 21, 2025, 11:50pm UTC](https://rpi-rgb-led-matrix.discourse.group/t/master-feature-centralized-rgbmatrix-command-line-interface-cli/1164 "2025-12-21T23:50:26Z")
Feature: Centralized ‘rgbmatrix’ command-line interface (CLI) Hello there, I have some extra free time over the holidays and I’m looking to develop a feature that I think this project needs. I make heavy use of this arch…
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## [C# examples issues](https://rpi-rgb-led-matrix.discourse.group/t/c-examples-issues/1157)
**Author:** [@evilC](https://rpi-rgb-led-matrix.discourse.group/u/evilC)\
**Replies:** 7\
**Last updated:** [December 20, 2025, 7:15am UTC](https://rpi-rgb-led-matrix.discourse.group/t/c-examples-issues/1157 "2025-12-20T07:15:12Z")
I see some changes were made recently to the C# bindings, but I still can’t get the PlayGif example to run. There are issues with some of the others, but I managed to work around them. I thought I would post here rather…
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## [Removing (De-soldering?) connectors from flexible panels?](https://rpi-rgb-led-matrix.discourse.group/t/removing-de-soldering-connectors-from-flexible-panels/1166)
**Author:** [@evilC](https://rpi-rgb-led-matrix.discourse.group/u/evilC)\
**Replies:** 3\
**Last updated:** [December 18, 2025, 6:24am UTC](https://rpi-rgb-led-matrix.discourse.group/t/removing-de-soldering-connectors-from-flexible-panels/1166 "2025-12-18T06:24:41Z")
For my T-shirt project, I would like to get it as low-profile as possible (So that the panel sticks out as little as possible) Most of the height of the panel is due to the Hub75 and power connectors, so I would like to…
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## [Cannot get panel to display anything](https://rpi-rgb-led-matrix.discourse.group/t/cannot-get-panel-to-display-anything/1156)
**Author:** [@evilC](https://rpi-rgb-led-matrix.discourse.group/u/evilC)\
**Replies:** 15\
**Last updated:** [December 17, 2025, 7:23am UTC](https://rpi-rgb-led-matrix.discourse.group/t/cannot-get-panel-to-display-anything/1156 "2025-12-17T07:23:09Z")
I have the following componments: RPi Zero W Electrodragon Active-3 board (Latest rev - v3?) I have configured the jumpers for the E line on pin 8 (Green lines in pic below): A 128x64 ABCDE panel I cannot seem…
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## [How to register a pixel mapper cleanly (file-wise)?](https://rpi-rgb-led-matrix.discourse.group/t/how-to-register-a-pixel-mapper-cleanly-file-wise/1143)
**Author:** [@deadlift89](https://rpi-rgb-led-matrix.discourse.group/u/deadlift89)\
**Replies:** 7\
**Last updated:** [December 17, 2025, 7:02am UTC](https://rpi-rgb-led-matrix.discourse.group/t/how-to-register-a-pixel-mapper-cleanly-file-wise/1143 "2025-12-17T07:02:26Z")
Is there an elegant way to register custom pixel mappers globally without hacking or modifying any internal code or C++ build params within rpi-rgb-led-matrix directly? I also don’t want to have to import and register th…
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## [Anyone willing to re-implement the led-image-viewer util as a library? Would consider paying](https://rpi-rgb-led-matrix.discourse.group/t/anyone-willing-to-re-implement-the-led-image-viewer-util-as-a-library-would-consider-paying/1162)
**Author:** [@evilC](https://rpi-rgb-led-matrix.discourse.group/u/evilC)\
**Replies:** 7\
**Last updated:** [December 15, 2025, 6:36pm UTC](https://rpi-rgb-led-matrix.discourse.group/t/anyone-willing-to-re-implement-the-led-image-viewer-util-as-a-library-would-consider-paying/1162 "2025-12-15T18:36:25Z")
I wish to have the functionality of the led-image-viewer, but as a library, not an executable. Why? Because if my app, for example, calls the led-image-viewer with -f(Play forever), and my app crashes, it leaves a child…
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## [Can not find "Imaging.h" when doing pip3 install of bindings/python](https://rpi-rgb-led-matrix.discourse.group/t/can-not-find-imaging-h-when-doing-pip3-install-of-bindings-python/1139)
**Author:** [@Chris11jed](https://rpi-rgb-led-matrix.discourse.group/u/Chris11jed)\
**Replies:** 9\
**Last updated:** [December 15, 2025, 7:10am UTC](https://rpi-rgb-led-matrix.discourse.group/t/can-not-find-imaging-h-when-doing-pip3-install-of-bindings-python/1139 "2025-12-15T07:10:25Z")
Hi, I am trying to get mqtt installed on the Rpi 4B that holds the hzeller/rpi-rgb-led-matrix, so I can run scripts to show images, video, whatever. In the /home/dietpi/rpi-rgb-led-matrix/bindings/python directory, and…
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## [P5(1921)64x32-8S](https://rpi-rgb-led-matrix.discourse.group/t/p5-1921-64x32-8s/1161)
**Author:** [@embeddedwolf](https://rpi-rgb-led-matrix.discourse.group/u/embeddedwolf)\
**Replies:** 22\
**Last updated:** [December 15, 2025, 7:06am UTC](https://rpi-rgb-led-matrix.discourse.group/t/p5-1921-64x32-8s/1161 "2025-12-15T07:06:11Z")
Hi, I am very new here , I am just working on a small project with esp32-S3 no PSRAM module, I have to display few words on HUB75-RGB panel on 128x32(64X32 two ), what I got from market consist of these two ICs ICN2037B …
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## [Image-viewer inconsistent behavior between single images and animations](https://rpi-rgb-led-matrix.discourse.group/t/image-viewer-inconsistent-behavior-between-single-images-and-animations/1158)
**Author:** [@evilC](https://rpi-rgb-led-matrix.discourse.group/u/evilC)\
**Replies:** 2\
**Last updated:** [December 15, 2025, 4:35am UTC](https://rpi-rgb-led-matrix.discourse.group/t/image-viewer-inconsistent-behavior-between-single-images-and-animations/1158 "2025-12-15T04:35:43Z")
I just made a PR to the docs with some notes about streams, but there is some other stuff that maybe needs addressing. -l\ : For animations: number of loops through a full cycle. This is inaccurat…
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## [Power requirements in docs. Inaccurate?](https://rpi-rgb-led-matrix.discourse.group/t/power-requirements-in-docs-inaccurate/1159)
**Author:** [@evilC](https://rpi-rgb-led-matrix.discourse.group/u/evilC)\
**Replies:** 9\
**Last updated:** [December 12, 2025, 11:55am UTC](https://rpi-rgb-led-matrix.discourse.group/t/power-requirements-in-docs-inaccurate/1159 "2025-12-12T11:55:49Z")
The docs say: Connection You need a separate power supply for the panel. There is a connector for that separate from the logic connector, typically a big one in the center of the board. The board requires 5V (double c…
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## [Text-example using 5x7.bdf doesn't accept input](https://rpi-rgb-led-matrix.discourse.group/t/text-example-using-5x7-bdf-doesnt-accept-input/1155)
**Author:** [@cohenjm98](https://rpi-rgb-led-matrix.discourse.group/u/cohenjm98)\
**Replies:** 2\
**Last updated:** [December 8, 2025, 1:37pm UTC](https://rpi-rgb-led-matrix.discourse.group/t/text-example-using-5x7-bdf-doesnt-accept-input/1155 "2025-12-08T13:37:03Z")
have successfully set up a pi2 using Seengreat RGB matrix adapter board with a Waveshare 64x32 display. I can run the demo and get images to display on the matrix. My problem is using the test-example program (I crea…
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## [P10RGB-3535-4s ZAGGIZ 1/4scan ABC P10 panels and https://github.com/2dom/PxMatrix](https://rpi-rgb-led-matrix.discourse.group/t/p10rgb-3535-4s-zaggiz-1-4scan-abc-p10-panels-and-https-github-com-2dom-pxmatrix/921)
**Author:** [@marcmerlin](https://rpi-rgb-led-matrix.discourse.group/u/marcmerlin)\
**Replies:** 5\
**Last updated:** [December 7, 2025, 10:11pm UTC](https://rpi-rgb-led-matrix.discourse.group/t/p10rgb-3535-4s-zaggiz-1-4scan-abc-p10-panels-and-https-github-com-2dom-pxmatrix/921 "2025-12-07T22:11:17Z")
Found those in my stash, just tried to see if they would work with rpi-rgb-panel. Of all address types, 0 is the closest one and after trying them, -led-multiplexing=4 is the zaggiz multiplexer that works root@DietPi:~…
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## [I've created a custom mapper for GKGD P10-3216-4s-x1](https://rpi-rgb-led-matrix.discourse.group/t/ive-created-a-custom-mapper-for-gkgd-p10-3216-4s-x1/1151)
**Author:** [@kstr](https://rpi-rgb-led-matrix.discourse.group/u/kstr)\
**Replies:** 1\
**Last updated:** [December 2, 2025, 7:41am UTC](https://rpi-rgb-led-matrix.discourse.group/t/ive-created-a-custom-mapper-for-gkgd-p10-3216-4s-x1/1151 "2025-12-02T07:41:38Z")
I’ve created a custom mapper for GKGD P10-3216-4s-x1. These panels were giving me headaches. I’ve almost pulled my hair out, but then it suddenly worked :slight\_smile: . I’m not really familiar with linux or c++, so a…
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## [Guidance sought on code archetecture for my project](https://rpi-rgb-led-matrix.discourse.group/t/guidance-sought-on-code-archetecture-for-my-project/1141)
**Author:** [@evilC](https://rpi-rgb-led-matrix.discourse.group/u/evilC)\
**Replies:** 5\
**Last updated:** [December 1, 2025, 4:18pm UTC](https://rpi-rgb-led-matrix.discourse.group/t/guidance-sought-on-code-archetecture-for-my-project/1141 "2025-12-01T16:18:11Z")
I am looking to build a wearable display, similar to what @marcmerlin has. I have a fair amount of coding experience in C# and Java and a little experience of JS / TS, but not C / C++ I would like the following feature…
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## [Announcement: Big bug and PR cleanup as well as helping out the project](https://rpi-rgb-led-matrix.discourse.group/t/announcement-big-bug-and-pr-cleanup-as-well-as-helping-out-the-project/1150)
**Author:** [@marcmerlin](https://rpi-rgb-led-matrix.discourse.group/u/marcmerlin)\
**Replies:** 2\
**Last updated:** [November 28, 2025, 6:58pm UTC](https://rpi-rgb-led-matrix.discourse.group/t/announcement-big-bug-and-pr-cleanup-as-well-as-helping-out-the-project/1150 "2025-11-28T18:58:17Z")
For those who don’t know me, I’m not the developer, Henner is a friend and former coworker of mine, so I’m just a user and helping out. I went through all the Pull Requests and tried to approve the ones that looked safe…
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## [How do I scroll text in specific areas using text-scroller?](https://rpi-rgb-led-matrix.discourse.group/t/how-do-i-scroll-text-in-specific-areas-using-text-scroller/1149)
**Author:** [@wakka0014](https://rpi-rgb-led-matrix.discourse.group/u/wakka0014)\
**Replies:** 5\
**Last updated:** [November 28, 2025, 7:34am UTC](https://rpi-rgb-led-matrix.discourse.group/t/how-do-i-scroll-text-in-specific-areas-using-text-scroller/1149 "2025-11-28T07:34:39Z")
I really love this library! This video has a total size of 128 pixels wide by 32 pixels high. Is there a way to scroll text in an area measuring 80 pixels wide by 16 pixels high in the bottom-right corner?
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## [Can anyone recommend a known working \<=P1.875 128x64 flexible panel?](https://rpi-rgb-led-matrix.discourse.group/t/can-anyone-recommend-a-known-working-p1-875-128x64-flexible-panel/1147)
**Author:** [@evilC](https://rpi-rgb-led-matrix.discourse.group/u/evilC)\
**Replies:** 6\
**Last updated:** [November 27, 2025, 9:24pm UTC](https://rpi-rgb-led-matrix.discourse.group/t/can-anyone-recommend-a-known-working-p1-875-128x64-flexible-panel/1147 "2025-11-27T21:24:42Z")
I bought two P1.875 128x64 flexible panels, but despite being listed as tested on the DMD\_STM32 wiki, apparently according to @board707 they won’t work due to having ICND2153 drivers. Can anyone recommend an alternative…
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## [Driving 2 chains and keeping GPIO pins free for buttons?](https://rpi-rgb-led-matrix.discourse.group/t/driving-2-chains-and-keeping-gpio-pins-free-for-buttons/1144)
**Author:** [@evilC](https://rpi-rgb-led-matrix.discourse.group/u/evilC)\
**Replies:** 1\
**Last updated:** [November 27, 2025, 6:31am UTC](https://rpi-rgb-led-matrix.discourse.group/t/driving-2-chains-and-keeping-gpio-pins-free-for-buttons/1144 "2025-11-27T06:31:13Z")
I wish to drive 2 panels on a RPi Zero 2W. I don’t have my panels yet but am 99% sure each one only has inputs, so I am guessing that means 2 chains. I would also like to have some buttons to control functionality. I d…
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## [URGENT - will not power on at all!](https://rpi-rgb-led-matrix.discourse.group/t/urgent-will-not-power-on-at-all/1136)
**Author:** [@sweh](https://rpi-rgb-led-matrix.discourse.group/u/sweh)\
**Replies:** 3\
**Last updated:** [November 27, 2025, 6:13am UTC](https://rpi-rgb-led-matrix.discourse.group/t/urgent-will-not-power-on-at-all/1136 "2025-11-27T06:13:33Z")
im really stumped..I’m working with a 128x64 HUB75 RGB LED panel connected through an ElectroDragon RGB Matrix HAT to a Raspberry Pi. I’m using the rpi-rgb-led-matrix library, and I’ve already rebuilt it multiple times, …
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## [64x32 with Adafruit demo worked 1 time. Black bars](https://rpi-rgb-led-matrix.discourse.group/t/64x32-with-adafruit-demo-worked-1-time-black-bars/1137)
**Author:** [@danni\_design](https://rpi-rgb-led-matrix.discourse.group/u/danni_design)\
**Replies:** 3\
**Last updated:** [November 27, 2025, 6:11am UTC](https://rpi-rgb-led-matrix.discourse.group/t/64x32-with-adafruit-demo-worked-1-time-black-bars/1137 "2025-11-27T06:11:52Z")
Hello everyone, Today I tried to setup a P5 64x32 led screen. I tried the demo and was very happy that it worked. I then tried demo 3 to find out that it stopped working. Then i tried demo 0 and now I have these black b…
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## [Panel compatible? ICND2153](https://rpi-rgb-led-matrix.discourse.group/t/panel-compatible-icnd2153/1146)
**Author:** [@evilC](https://rpi-rgb-led-matrix.discourse.group/u/evilC)\
**Replies:** 2\
**Last updated:** [November 25, 2025, 11:07am UTC](https://rpi-rgb-led-matrix.discourse.group/t/panel-compatible-icnd2153/1146 "2025-11-25T11:07:04Z")
I purchased two of these panels (The P1.875 ones) I had no prior indication of what chipset they use, but upon receiving them, I see that the chips are Chipone ICND2153 AP The wiki for this library says that “This libr…
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## [16 cols x 8 rows hub 75 p20 panel](https://rpi-rgb-led-matrix.discourse.group/t/16-cols-x-8-rows-hub-75-p20-panel/1138)
**Author:** [@Dotmatrix](https://rpi-rgb-led-matrix.discourse.group/u/Dotmatrix)\
**Replies:** 7\
**Last updated:** [November 20, 2025, 8:51am UTC](https://rpi-rgb-led-matrix.discourse.group/t/16-cols-x-8-rows-hub-75-p20-panel/1138 "2025-11-20T08:51:47Z")
thiz panel 16 cols x 8 rows . I am ha ving trou ble. Will the lib work with an 8 row panel ?
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## [Feasibility questions surrounding wearable display](https://rpi-rgb-led-matrix.discourse.group/t/feasibility-questions-surrounding-wearable-display/1140)
**Author:** [@evilC](https://rpi-rgb-led-matrix.discourse.group/u/evilC)\
**Replies:** 12\
**Last updated:** [November 11, 2025, 7:50pm UTC](https://rpi-rgb-led-matrix.discourse.group/t/feasibility-questions-surrounding-wearable-display/1140 "2025-11-11T19:50:49Z")
I currently own a wearable off-the-shelf display - a Loy T3-HD panel, which is a P2.0 96x128px panel. It came as a backpack, but I took the display out and designed and 3D printed a mount to attach it to a t-shirt. It …
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## [Does anyone know what Hub75 matrix this is?](https://rpi-rgb-led-matrix.discourse.group/t/does-anyone-know-what-hub75-matrix-this-is/1127)
**Author:** [@sweh](https://rpi-rgb-led-matrix.discourse.group/u/sweh)\
**Replies:** 3\
**Last updated:** [October 26, 2025, 3:38am UTC](https://rpi-rgb-led-matrix.discourse.group/t/does-anyone-know-what-hub75-matrix-this-is/1127 "2025-10-26T03:38:21Z")
I’m just curious if anyone is able to tell me what this hub75 matrix interface is. I can’t recognize the logo on it but I’m building ancient James’ exact volumetric display. Any help would be greatly appreciated! …
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## [Panel P2.5 128x64 Hub75 ABC no display](https://rpi-rgb-led-matrix.discourse.group/t/panel-p2-5-128x64-hub75-abc-no-display/1124)
**Author:** [@giga45632](https://rpi-rgb-led-matrix.discourse.group/u/giga45632)\
**Replies:** 7\
**Last updated:** [October 26, 2025, 3:37am UTC](https://rpi-rgb-led-matrix.discourse.group/t/panel-p2-5-128x64-hub75-abc-no-display/1124 "2025-10-26T03:37:01Z")
Hello everyone, I have four 128x64 P2.5 LED panels. I installed the rpi-rgb-led-matrix library. I tried numerous commands, but without success. I try with a pi 3 and pi 4. My Hardware A Raspberry Pi 4 with Pi OS Lite …
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## [P1.953 128x128 LED Matrix, no display or random display](https://rpi-rgb-led-matrix.discourse.group/t/p1-953-128x128-led-matrix-no-display-or-random-display/1130)
**Author:** [@DenizOzaydin](https://rpi-rgb-led-matrix.discourse.group/u/DenizOzaydin)\
**Replies:** 7\
**Last updated:** [October 26, 2025, 12:50am UTC](https://rpi-rgb-led-matrix.discourse.group/t/p1-953-128x128-led-matrix-no-display-or-random-display/1130 "2025-10-26T00:50:45Z")
Hello, I received a 128x128 panel from China a moment ago. Panel has several chips: DP32020A: for multiplexing (there are 32 of them) (Q1-16), (QA1-16) C84550P: I do not know the functionality (there are 96 of them) (U…
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## [Trying to make countdown timer with colored circles on right side](https://rpi-rgb-led-matrix.discourse.group/t/trying-to-make-countdown-timer-with-colored-circles-on-right-side/1125)
**Author:** [@ARrocks](https://rpi-rgb-led-matrix.discourse.group/u/ARrocks)\
**Replies:** 2\
**Last updated:** [October 18, 2025, 12:01pm UTC](https://rpi-rgb-led-matrix.discourse.group/t/trying-to-make-countdown-timer-with-colored-circles-on-right-side/1125 "2025-10-18T12:01:23Z")
I am trying to use rpi-rgb-matrix to make a count down timer for my archery range. I need to be able to set for 4 minutes (we have some other rounds with different times), also a stoplight style red, yellow, green ligh…
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## [64x32 single color panel build](https://rpi-rgb-led-matrix.discourse.group/t/64x32-single-color-panel-build/1122)
**Author:** [@V8Power](https://rpi-rgb-led-matrix.discourse.group/u/V8Power)\
**Replies:** 5\
**Last updated:** [October 17, 2025, 8:35pm UTC](https://rpi-rgb-led-matrix.discourse.group/t/64x32-single-color-panel-build/1122 "2025-10-17T20:35:30Z")
I’m designing a 64x32 panel with yellow LED’s. This is a high brightness panel with a 1:8 multiplexing ratio. Dimming is also needed. To dim it I’m using a TPS54331 with a bit of voltage adjustment circuitry added. I’m u…
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## [Updated documentation to show double width Vmapper with 52 panels](https://rpi-rgb-led-matrix.discourse.group/t/updated-documentation-to-show-double-width-vmapper-with-52-panels/1126)
**Author:** [@marcmerlin](https://rpi-rgb-led-matrix.discourse.group/u/marcmerlin)\
**Replies:** 0\
**Last updated:** [October 8, 2025, 5:07am UTC](https://rpi-rgb-led-matrix.discourse.group/t/updated-documentation-to-show-double-width-vmapper-with-52-panels/1126 "2025-10-08T05:07:32Z")
Please see the updated I wrote this to show how to handle a 52 panel display wired this way
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## [Run python file on startup](https://rpi-rgb-led-matrix.discourse.group/t/run-python-file-on-startup/1118)
**Author:** [@Yvonne](https://rpi-rgb-led-matrix.discourse.group/u/Yvonne)\
**Replies:** 4\
**Last updated:** [September 17, 2025, 2:47pm UTC](https://rpi-rgb-led-matrix.discourse.group/t/run-python-file-on-startup/1118 "2025-09-17T14:47:46Z")
Hello, I have a rpi-rgb- led matrix 16 rows and 32 cols. I wrote a Python file in order to run my own text which changes every minute. I wrote the following code in rc.local: #!/bin/shpio -e \_IP=$(hostname -I) || tr…
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