# Latest **URL:** https://rpi-rgb-led-matrix.discourse.group/latest.md [Latest](https://rpi-rgb-led-matrix.discourse.group/latest.md) · [Categories](https://rpi-rgb-led-matrix.discourse.group/categories.md) --- ## [Welcome to Discourse](https://rpi-rgb-led-matrix.discourse.group/t/welcome-to-discourse/7)
**Author:** [@system](https://rpi-rgb-led-matrix.discourse.group/u/system)\ **Replies:** 0\ **Last updated:** [August 19, 2020, 5:25am UTC](https://rpi-rgb-led-matrix.discourse.group/t/welcome-to-discourse/7 "2020-08-19T05:25:39Z")
This group provides volunteer based support for your projects based on GitHub - hzeller/rpi-rgb-led-matrix: Controlling up to three chains of 64x64, 32x32, 16x32 or similar RGB LED displays using Raspberry Pi GPIO . If y… --- ## [PWM versus non-PWM panel selection](https://rpi-rgb-led-matrix.discourse.group/t/pwm-versus-non-pwm-panel-selection/1253)
**Author:** [@cubinarium](https://rpi-rgb-led-matrix.discourse.group/u/cubinarium)\ **Replies:** 12\ **Last updated:** [September 16, 2026, 9:21am UTC](https://rpi-rgb-led-matrix.discourse.group/t/pwm-versus-non-pwm-panel-selection/1253 "2026-09-16T09:21:33Z")
Hi all (Marc!) :smiley: I’ve worked through to the end of a project (lucentcube.com) and the non-PWM panels using chipset FM6124 and these work really well, albeit with a slower refresh rate. Given the success of the c… --- ## [SM16380SC on Pi: porting board707's DMD\_STM32 config sequence into the SPWM fork](https://rpi-rgb-led-matrix.discourse.group/t/sm16380sc-on-pi-porting-board707s-dmd-stm32-config-sequence-into-the-spwm-fork/1254)
**Author:** [@erpippolus](https://rpi-rgb-led-matrix.discourse.group/u/erpippolus)\ **Replies:** 1\ **Last updated:** [September 13, 2026, 5:25pm UTC](https://rpi-rgb-led-matrix.discourse.group/t/sm16380sc-on-pi-porting-board707s-dmd-stm32-config-sequence-into-the-spwm-fork/1254 "2026-09-13T17:25:27Z")
Hi, and @board707 in particular — this builds directly on your DMD\_STM32 DMD\_RGB\_SM16380SH class, so I hope you don’t mind the direct question. HARDWARE Two chained 128x64 P2.5 modules, 320x160mm, SMD2121 Column drive… --- ## [Dynamic brightness content-streamer?](https://rpi-rgb-led-matrix.discourse.group/t/dynamic-brightness-content-streamer/1242)
**Author:** [@evilC](https://rpi-rgb-led-matrix.discourse.group/u/evilC)\ **Replies:** 11\ **Last updated:** [September 7, 2026, 7:50pm UTC](https://rpi-rgb-led-matrix.discourse.group/t/dynamic-brightness-content-streamer/1242 "2026-09-07T19:50:54Z")
I am thinking of trying to write an alternative to the content-streamer which allows dynamic brightness (Allow brightness to be changed while an animation is playing). Not the led-image-viewer command-line utility - via… --- ## [Web BDF/uInt array PIXEL FONT EDITOR](https://rpi-rgb-led-matrix.discourse.group/t/web-bdf-uint-array-pixel-font-editor/1251)
**Author:** [@b4rt0](https://rpi-rgb-led-matrix.discourse.group/u/b4rt0)\ **Replies:** 0\ **Last updated:** [August 29, 2026, 8:22pm UTC](https://rpi-rgb-led-matrix.discourse.group/t/web-bdf-uint-array-pixel-font-editor/1251 "2026-08-29T20:22:19Z")
This app is a BDF font/uInt array pixel font editor/creator contained within a single .html file, using vanilla JavaScript. I wanted to have tool like this since I’ve started dabbling with neopixel matrixes and esp… --- ## [Panels won't work in any port other than port 1](https://rpi-rgb-led-matrix.discourse.group/t/panels-wont-work-in-any-port-other-than-port-1/1249)
**Author:** [@Yo\_momma](https://rpi-rgb-led-matrix.discourse.group/u/Yo_momma)\ **Replies:** 2\ **Last updated:** [August 28, 2026, 10:53pm UTC](https://rpi-rgb-led-matrix.discourse.group/t/panels-wont-work-in-any-port-other-than-port-1/1249 "2026-08-28T22:53:38Z")
Hello, This is my first ever type of project including raspberry pi’s or led panels but I followed the read me and other online tutorials to the best of my ability and ended up getting the demos to work on both panels (… --- ## [Finding compatible panels](https://rpi-rgb-led-matrix.discourse.group/t/finding-compatible-panels/1247)
**Author:** [@a2computers](https://rpi-rgb-led-matrix.discourse.group/u/a2computers)\ **Replies:** 4\ **Last updated:** [August 16, 2026, 5:26pm UTC](https://rpi-rgb-led-matrix.discourse.group/t/finding-compatible-panels/1247 "2026-08-16T17:26:08Z")
Hi! I am trying to buy a bunch of panels wholesale but I am struggling to figure out whether or not the panels I intend to buy will work with the library. I already purchased one panel I thought was compatible, but it se… --- ## [Has anyone had any success with non-RPi boards like the Radxa Zero 3W or Orange Pi Zero 3?](https://rpi-rgb-led-matrix.discourse.group/t/has-anyone-had-any-success-with-non-rpi-boards-like-the-radxa-zero-3w-or-orange-pi-zero-3/1227)
**Author:** [@cubinarium](https://rpi-rgb-led-matrix.discourse.group/u/cubinarium)\ **Replies:** 16\ **Last updated:** [August 16, 2026, 5:22pm UTC](https://rpi-rgb-led-matrix.discourse.group/t/has-anyone-had-any-success-with-non-rpi-boards-like-the-radxa-zero-3w-or-orange-pi-zero-3/1227 "2026-08-16T17:22:24Z")
Hi, My project is growing arms and legs and am at the stage of looking to build this at scale. It’s working well based upon a Rasberry Pi Zero 2 but as most people may know I’ve hit the wall of being able to source the… --- ## [Controlling Novastar MCTRL300/600 Led controllers with linux](https://rpi-rgb-led-matrix.discourse.group/t/controlling-novastar-mctrl300-600-led-controllers-with-linux/1248)
**Author:** [@BaoErMan](https://rpi-rgb-led-matrix.discourse.group/u/BaoErMan)\ **Replies:** 0\ **Last updated:** [August 15, 2026, 8:59pm UTC](https://rpi-rgb-led-matrix.discourse.group/t/controlling-novastar-mctrl300-600-led-controllers-with-linux/1248 "2026-08-15T20:59:54Z")
Hello you all. I have been working on making some tools to help me control Novastar and Huidu led controllers in linux. Initial setup is still done on windows but monitoring and changing brightness can easily be done wi… --- ## [GPIO input in C++ raspberry pi zero W](https://rpi-rgb-led-matrix.discourse.group/t/gpio-input-in-c-raspberry-pi-zero-w/1237)
**Author:** [@undercurrent77](https://rpi-rgb-led-matrix.discourse.group/u/undercurrent77)\ **Replies:** 8\ **Last updated:** [August 3, 2026, 8:50am UTC](https://rpi-rgb-led-matrix.discourse.group/t/gpio-input-in-c-raspberry-pi-zero-w/1237 "2026-08-03T08:50:17Z")
Hello, I’m using the library on an rpi zero w running dietpi and a custom c++ code to display an animated gif on a matrix. I advance the display to the next animated image in a folder using a physical button connected t… --- ## [Requesting help in mapper](https://rpi-rgb-led-matrix.discourse.group/t/requesting-help-in-mapper/1246)
**Author:** [@macp](https://rpi-rgb-led-matrix.discourse.group/u/macp)\ **Replies:** 2\ **Last updated:** [July 29, 2026, 12:32pm UTC](https://rpi-rgb-led-matrix.discourse.group/t/requesting-help-in-mapper/1246 "2026-07-29T12:32:02Z")
I have RGB Matric panel with connections as P1–\> P6–\>P2–\>P5–\>P3–\>P4 and below is its actual matrix placements P1 P2 P3 P6 P5 P4 Wwhich mapper i can use to be able to use these matrix as one display --- ## [FM6363C + DP32019B Flickering](https://rpi-rgb-led-matrix.discourse.group/t/fm6363c-dp32019b-flickering/1239)
**Author:** [@raulzanardo](https://rpi-rgb-led-matrix.discourse.group/u/raulzanardo)\ **Replies:** 12\ **Last updated:** [July 27, 2026, 11:49pm UTC](https://rpi-rgb-led-matrix.discourse.group/t/fm6363c-dp32019b-flickering/1239 "2026-07-27T23:49:46Z")
Hi to you all! I’m using the experimental lib from kingdo9, it is working fine but still have some flickering in the brightness, my current specs are this: There are two 128x64 in parallel, they have the chips FM6363C … --- ## [New cube based project (lucentcube.com), let me know your thoughts!](https://rpi-rgb-led-matrix.discourse.group/t/new-cube-based-project-lucentcube-com-let-me-know-your-thoughts/1234)
**Author:** [@cubinarium](https://rpi-rgb-led-matrix.discourse.group/u/cubinarium)\ **Replies:** 12\ **Last updated:** [July 26, 2026, 7:25am UTC](https://rpi-rgb-led-matrix.discourse.group/t/new-cube-based-project-lucentcube-com-let-me-know-your-thoughts/1234 "2026-07-26T07:25:58Z")
Hi all, Apologies for the shameless plug, but it’s been some time since I first saw these LED cubes and since then I’ve been working on little else! It’s been a labour of love but have redeveloped my own version to the … --- ## [Coding style guidelines for AI?](https://rpi-rgb-led-matrix.discourse.group/t/coding-style-guidelines-for-ai/1243)
**Author:** [@evilC](https://rpi-rgb-led-matrix.discourse.group/u/evilC)\ **Replies:** 4\ **Last updated:** [July 24, 2026, 10:23pm UTC](https://rpi-rgb-led-matrix.discourse.group/t/coding-style-guidelines-for-ai/1243 "2026-07-24T22:23:38Z")
There seem to be a fair few of us using AI to work on this repo, and I remember that last time I did it, I had to go back and re-do a bunch of work because what it spat out did not fit the conventions of the repo. I am … --- ## [ICND1065L SPWM Config troubles](https://rpi-rgb-led-matrix.discourse.group/t/icnd1065l-spwm-config-troubles/1230)
**Author:** [@5UP3R3D](https://rpi-rgb-led-matrix.discourse.group/u/5UP3R3D)\ **Replies:** 15\ **Last updated:** [July 19, 2026, 9:40pm UTC](https://rpi-rgb-led-matrix.discourse.group/t/icnd1065l-spwm-config-troubles/1230 "2026-07-19T21:40:39Z")
Hi & thanks for this channel! Ich have troubles with a 11px gap of the lower half with a 128x64px panel driven by a ICND1065L. The controller is a RPI CM4 board & Adafruit Active3 Bonnet hat. The previous setup - 1… --- ## [Party LED Outfit Version 8: New Self Refreshing PWM Panels, Proper Frame Using Magnets, and Independent Front/Back Control](https://rpi-rgb-led-matrix.discourse.group/t/party-led-outfit-version-8-new-self-refreshing-pwm-panels-proper-frame-using-magnets-and-independent-front-back-control/1236)
**Author:** [@marcmerlin](https://rpi-rgb-led-matrix.discourse.group/u/marcmerlin)\ **Replies:** 2\ **Last updated:** [July 7, 2026, 6:57am UTC](https://rpi-rgb-led-matrix.discourse.group/t/party-led-outfit-version-8-new-self-refreshing-pwm-panels-proper-frame-using-magnets-and-independent-front-back-control/1236 "2026-07-07T06:57:08Z")
Update for @evilC I hope V8 will be good for a while, it’s my 4th version in 4 years with 128x192 resolution and 6 panels (from rigid, to powerbanks instead of lipos, to ABCDE flexible panels and ABC PWM panels and m… --- ## [T-shirt project progress log](https://rpi-rgb-led-matrix.discourse.group/t/t-shirt-project-progress-log/1160)
**Author:** [@evilC](https://rpi-rgb-led-matrix.discourse.group/u/evilC)\ **Replies:** 47\ **Last updated:** [July 6, 2026, 10:21pm UTC](https://rpi-rgb-led-matrix.discourse.group/t/t-shirt-project-progress-log/1160 "2026-07-06T22:21:39Z")
I have finished work for the year, so I now have some serious time over xmas to devote to my LED T-Shirt project. I have my own playlist handling code set up - it’s a linked list, allowing me to add / move / remove thin… --- ## [RUC7258D P3 RGB board](https://rpi-rgb-led-matrix.discourse.group/t/ruc7258d-p3-rgb-board/1229)
**Author:** [@Ani](https://rpi-rgb-led-matrix.discourse.group/u/Ani)\ **Replies:** 7\ **Last updated:** [July 6, 2026, 9:03pm UTC](https://rpi-rgb-led-matrix.discourse.group/t/ruc7258d-p3-rgb-board/1229 "2026-07-06T21:03:18Z")
Hi Team, I mistakenly bought this RUC7258D P3 board from https://hubtronics.in; (main driver is CNS7263GP \[https://m.isle.org.cn/news/detail/enterprises?lang=zh&id=554\\\]) and now not able to use it with Pi 4B & Adafruit… --- ## [Heads up on new airline idiocy: 2 powerbanks max, no matter what size, good luck](https://rpi-rgb-led-matrix.discourse.group/t/heads-up-on-new-airline-idiocy-2-powerbanks-max-no-matter-what-size-good-luck/1235)
**Author:** [@marcmerlin](https://rpi-rgb-led-matrix.discourse.group/u/marcmerlin)\ **Replies:** 0\ **Last updated:** [July 6, 2026, 8:43pm UTC](https://rpi-rgb-led-matrix.discourse.group/t/heads-up-on-new-airline-idiocy-2-powerbanks-max-no-matter-what-size-good-luck/1235 "2026-07-06T20:43:50Z")
more details here: https://www.facebook.com/ledtranceguy/posts/pfbid02vqZtLo7hk5AEH3UHiHBvFoCCMiwGRbaYsefxEy44yCg89s6x7n73cf8Bnp6jBdrbl basically those idiots are now preventing you from taking more than 2 powerbanks (t… --- ## [Really bad ghosting](https://rpi-rgb-led-matrix.discourse.group/t/really-bad-ghosting/1226)
**Author:** [@roykolak](https://rpi-rgb-led-matrix.discourse.group/u/roykolak)\ **Replies:** 4\ **Last updated:** [June 16, 2026, 12:13am UTC](https://rpi-rgb-led-matrix.discourse.group/t/really-bad-ghosting/1226 "2026-06-16T00:13:59Z")
Hey there! Im seeing some really bad ghosting on my 32x32 panel. I have a rpi 4 powering it with individual wires, no hat or bonnet. I’ve played with the various customization options to help with ghosting and i only se… --- ## [Is this the most logical arrangement?](https://rpi-rgb-led-matrix.discourse.group/t/is-this-the-most-logical-arrangement/1217)
**Author:** [@fluro](https://rpi-rgb-led-matrix.discourse.group/u/fluro)\ **Replies:** 4\ **Last updated:** [May 20, 2026, 2:22pm UTC](https://rpi-rgb-led-matrix.discourse.group/t/is-this-the-most-logical-arrangement/1217 "2026-05-20T14:22:37Z")
I’m using an Electrodragon MPC1120 board with 3 outputs on a 24 panel arrangement for an overall display of 384 wide x 128 high. I’ve divided the display into 3 banks of 8, for equal distribution, with all panels in the … --- ## [Adafruit 32x32 Matrix barely working](https://rpi-rgb-led-matrix.discourse.group/t/adafruit-32x32-matrix-barely-working/1102)
**Author:** [@neo](https://rpi-rgb-led-matrix.discourse.group/u/neo)\ **Replies:** 4\ **Last updated:** [May 20, 2026, 2:16pm UTC](https://rpi-rgb-led-matrix.discourse.group/t/adafruit-32x32-matrix-barely-working/1102 "2026-05-20T14:16:07Z")
Hello everyone, I’m trying to work on a relatively simple game project with a single 32x32 matrix by Adafruit ( P5-2121-32×32-16S-HL1.0). Unfortunately, I have now run into an issue while trying to hookup the panel to m… --- ## [Does anyone use anything other than Raspberry Pi OS for performance reasons?](https://rpi-rgb-led-matrix.discourse.group/t/does-anyone-use-anything-other-than-raspberry-pi-os-for-performance-reasons/1206)
**Author:** [@cubinarium](https://rpi-rgb-led-matrix.discourse.group/u/cubinarium)\ **Replies:** 10\ **Last updated:** [April 30, 2026, 5:11pm UTC](https://rpi-rgb-led-matrix.discourse.group/t/does-anyone-use-anything-other-than-raspberry-pi-os-for-performance-reasons/1206 "2026-04-30T17:11:55Z")
Hi all, I’ve been prototyping my project and it’s going really well, however on a clean Pi OS with some services removed and isolating my process to CPU3 as recommended occasionally the OS will do a thing and there’s a … --- ## [Adafruit hat on pi 4 + wavshare panel(FM6124EJ) : dark panel](https://rpi-rgb-led-matrix.discourse.group/t/adafruit-hat-on-pi-4-wavshare-panel-fm6124ej-dark-panel/1202)
**Author:** [@drcable](https://rpi-rgb-led-matrix.discourse.group/u/drcable)\ **Replies:** 3\ **Last updated:** [April 29, 2026, 3:43pm UTC](https://rpi-rgb-led-matrix.discourse.group/t/adafruit-hat-on-pi-4-wavshare-panel-fm6124ej-dark-panel/1202 "2026-04-29T15:43:23Z")
Hi, I’ve spent all day trying to get a wavshare 32x64 panel ( RGB Full-Colour LED Matrix Panel - 3mm Pitch, 64x32 Pixels - The Pi Hut ). I’ve been using the adafruit HAT to drive it: Adafruit RGB Matrix HAT + RTC for Ra… --- ## [Crashing RT-kernel for PiZero2W, confirmation / help requested](https://rpi-rgb-led-matrix.discourse.group/t/crashing-rt-kernel-for-pizero2w-confirmation-help-requested/1218)
**Author:** [@mjp66](https://rpi-rgb-led-matrix.discourse.group/u/mjp66)\ **Replies:** 7\ **Last updated:** [April 29, 2026, 3:18pm UTC](https://rpi-rgb-led-matrix.discourse.group/t/crashing-rt-kernel-for-pizero2w-confirmation-help-requested/1218 "2026-04-29T15:18:00Z")
Greetings, I have been able to crash RT-kernel for PiZero2W i.e. raspberry\_pi\_zero2w\_trixie\_rt\_64bit\_251204.img. From https://github.com/hzeller/rpi-rgb-led-matrix/tree/master/RT-kernel I would like independent confir… --- ## [I need help with the problems I have with the HUB75 64X64 panel and my Raspberry Pico 2W](https://rpi-rgb-led-matrix.discourse.group/t/i-need-help-with-the-problems-i-have-with-the-hub75-64x64-panel-and-my-raspberry-pico-2w/1222)
**Author:** [@Much\_Needleworker](https://rpi-rgb-led-matrix.discourse.group/u/Much_Needleworker)\ **Replies:** 0\ **Last updated:** [April 27, 2026, 2:31pm UTC](https://rpi-rgb-led-matrix.discourse.group/t/i-need-help-with-the-problems-i-have-with-the-hub75-64x64-panel-and-my-raspberry-pico-2w/1222 "2026-04-27T14:31:32Z")
hi ! I’m a beginner who really needs help and after trying everything, I try on this forum hoping to find the solution. I’m trying to control with my Pico 2W, the HUB75 LED panel, but it doesn’t make any sense. I feel … --- ## [What are people's experience with designing PCB's, based upon the active3 controller?](https://rpi-rgb-led-matrix.discourse.group/t/what-are-peoples-experience-with-designing-pcbs-based-upon-the-active3-controller/1212)
**Author:** [@cubinarium](https://rpi-rgb-led-matrix.discourse.group/u/cubinarium)\ **Replies:** 3\ **Last updated:** [April 21, 2026, 10:04am UTC](https://rpi-rgb-led-matrix.discourse.group/t/what-are-peoples-experience-with-designing-pcbs-based-upon-the-active3-controller/1212 "2026-04-21T10:04:48Z")
Hi all, Apologies for the number of questions, I’m part the way through my hzerller based (RPIZ2W, AdaFruit triple bonnet) project and since I’m including power management (balances lipo+psu), accelerometer\\fuel gauge, … --- ## [Spiral effect in terminal prints](https://rpi-rgb-led-matrix.discourse.group/t/spiral-effect-in-terminal-prints/1201)
**Author:** [@night](https://rpi-rgb-led-matrix.discourse.group/u/night)\ **Replies:** 6\ **Last updated:** [April 11, 2026, 12:44pm UTC](https://rpi-rgb-led-matrix.discourse.group/t/spiral-effect-in-terminal-prints/1201 "2026-04-11T12:44:12Z")
This is a tangent of RPI Matrix, but as someone new to any Pi work this is the first time I’ve seen it. Back when I was solving errors and now that I am trying RGBMatrixEmulator things printed/echoed to the terminal do … --- ## [Any Pi 5 testers out there?](https://rpi-rgb-led-matrix.discourse.group/t/any-pi-5-testers-out-there/1214)
**Author:** [@kingdo9](https://rpi-rgb-led-matrix.discourse.group/u/kingdo9)\ **Replies:** 0\ **Last updated:** [April 11, 2026, 12:14am UTC](https://rpi-rgb-led-matrix.discourse.group/t/any-pi-5-testers-out-there/1214 "2026-04-11T00:14:32Z")
Just looking to get your experiences with the below code test to the hzeller library. Raspberry Pi 5 Support. Make sure you clone the pi5\_support branch git clone --branch pi5\_support https://github.com/kingdo9/rpi-rg… --- ## [Python os.path.exists() broken after RGBMatrix initialization](https://rpi-rgb-led-matrix.discourse.group/t/python-os-path-exists-broken-after-rgbmatrix-initialization/1213)
**Author:** [@dereksp](https://rpi-rgb-led-matrix.discourse.group/u/dereksp)\ **Replies:** 0\ **Last updated:** [April 7, 2026, 6:22pm UTC](https://rpi-rgb-led-matrix.discourse.group/t/python-os-path-exists-broken-after-rgbmatrix-initialization/1213 "2026-04-07T18:22:09Z")
Under the current build, I am having issues with os.path.exists() behaving differently after the call to RGBMatrix(). I thought it might be similar to Cpython bug?! include path break after rgbmatrix() because I am using… [Next page](https://rpi-rgb-led-matrix.discourse.group/latest.md?page=1)