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Noob needs help with their setup #1653
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Before I help You, I think you must spend a couple more of hours reading the guide, right? Then, keep in mind this; read, I mean, READ carefully the Adafruit guide of your HAT, this link in a single page. In some cases, the rpi-rgb-led-matrix is compiled for "regular" wiring, but you need to set "adafruit-hat". Also, You need to try (if You don't know already) --led-multiplexing=0..to.. 19 (the type of your RGB Panel), and slow the GPIO in your RPi 4, --led-slowdown-gpio=<0..4>, then use in demo as follow: sudo ./demo -D 0 --led-gpio-mapping=adafruit-hat --led-rows=32 --led-cols=64 --led-chain=3 --led-no-hardware-pulse --led-multiplexing=1 It doesn't work yet? Another hour of reading, soon you get the right parameters, keep trying --led-multiplexing with other values until 17 Best Regards |
Hello ! Thanks a lot for your help. I read the guide several times. I didn't weld the HAT, so I focused on making the connections. In the guide, I saw the instruction to weld jumper “E” to pad 8, but there is very little information about values 8 and 16. I don't know what information to look for in my panel settings since they don’t come from the Adafruit shop. To be safe, I welded jumper 8 as described in the guide. Another detail is that there was a short circuit in my first assembly at the right GPIO ports. This is why I bought a new LED Matrix controller, thinking I had damaged my HAT. However, the commands don’t work with this controller either. The guide is very clear, and I followed it carefully. Now I don’t know what to do to fix my setup. |
Would be great if You share your command, the picture of your output (video, better), also tell us, the Rpi are You using for this project: RPi 1, 2, 3, 4.... (Rpi 5 is not compatible yet) Thanks in advance. This ALWAYS works: wire your project, using the REGULAR [1] (in the wiring guide), then, with a PROPER POWER SUPPLY (5V 5A, at minimum) test demo |
Hello, ok I have a RPI 4B and 5v 15a alimentation Led_Pannel_Issue_1.mp4Thanks a lot for your help |
BUT YOU FORGOT to share the output in RGB Panel of each command.... I note you feed the 5V to panel FROM Adafruit HAT; no, feed power from the power supply directly, I AM NOT SURE if the panel supplies enough current to panel... Waiting your RGB PANEL OUTPUT in video... I will be all night long working... |
I think it is not important to share the output because nothing appears on the LED panel. I have tried to feed power directly to the power supply, but there is nothing there too. I know it is annoying to help an inexperienced person. Thank you for taking the time to help me. |
well, if you went so far filming that video, a little seconds more.. BUT, if NOTHING is showed in the panel.... YOU MUST FIRST, check your:
|
Hi, I replaced the adafruit-hat with regular, and I also formatted my SD card and reinstalled the library again, but nothing happens. |
Power supply, 5A at min for each panel
El jue., 6 de jun. de 2024 09:11, oryz0 ***@***.***> escribió:
… Hi,
Unfortunately, I don't have another backup power supply. However, if
that's the question, there is indeed electricity flowing through the
panels. My first photo in this conversation shows an electrical bug; the
image isn't good, but there is a connection when I touch it with my hands :
https://github.com/hzeller/rpi-rgb-led-matrix/assets/169474469/5f9e05f7-da57-4e5a-b900-0a468db563dd
I replaced the adafruit-hat with regular, and I also formatted my SD card
and reinstalled the library again, but nothing happens.
—
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Presently I have 5V 15A power supply for one pannel, that’s enough, isn’t it ? |
NOW, try; if it doesn't work yet, keep trying:
God Bless You |
Hi, What do you mean by "new folder"? A new issue in rpi-rgb-led-matrix forum ? I am unable to understand regular wiring, which is why I bought a hat and then a Matrix controller to avoid dealing with it. I do very little electronics; what I'm passionate about is graphic animations on LED panels. Best regards, and thank you again for your patience |
then, purchase an ElectroDragon active board... a very good option and be free from wiring again.. |
Hi community!
I'm a passionate noob trying to learn electronics, and I've spent many hours trying to solve my issues on my own. Now I'm reaching out to you:
I've purchased 3 LED panels 64x32, Raspberry Pi 4B, a 5V 15A power supply, and 1 Adafruit HAT.
I've carefully followed the guide provided on the website, but I can't seem to display anything other than glitches and color bands like in the photo :
However, my Raspberry Pi seems to be sending information to the LED panels properly.
I bought a LED-matrix controller thinking that the problem might be with the Adafruit HAT.
What could I have done wrong? Bad wiring? Incorrect commands?
Thank you in advance for your invaluable help!
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