Matrix Panel not working

[mikeysklar]

Thanks for gathering this info.

The scroll.py and RGB-32x64.py are python example scripts that do not honor the panel_type arguments. There is a samplesbase.py which shows support for the --led-panel_type.

The current release of hzeller/rpi-rgb-led-matrix appears to also support the panel-type flag in the c-code so you would have to run something like this command to test it:

Code: Select all

rpi-rgb-led-matrix/examples-api-use/demo --led-rows=64 --led-cols=32 --led-panel-type=FM6126A

Since we are not sure that you have the FM6126A take a look at the 4 chips around the hub-75 connector (back of your new 4mm panel). Are they labeled like this FM6126A panel is:

hub75-fm6126A.jpeg (1.58 MiB) Viewed 92 times

[JoeSchwartz]

The RGB 32x63.py does import samplebase.py, my mistake that scroll.py didn't. I'll try running the c-code script.
The chip id on the the 4mm panel is RUC7258D and below that 0fC32549.
Google Drive link to photo is below.

https://drive.google.com/drive/folders/ ... sp=sharing

Thanks for your help.

[mikeysklar]

Joe,

Is it possible this panel is mixed up with another one you have? I see you had opened an issue with hzeller's repo in 2019 with what looks like the same model of panel. ( P4-2121-64*32-16S-HL1 same model as photo )

https://github.com/hzeller/rpi-rgb-led- ... issues/948

The RUC7258D looks like a LED driver chip. Can you identify some of the other components on this one?

[JoeSchwartz]

That was not me on GitHub, and the panel I took picture of is the first panel received, I have it marked "original". And the replacement panel also has same chip markings.

The other chips that run vertical from left to right there a 7 then 7 then 6 the 6, have CHIP NE
then ICN20378P and below that DO8446MA.
One chip in second row row next to purple label has M245MB and below BZBSYPAA10.
Thanks,
Regards,
Joe Schwartz

[mikeysklar]

Sorry for the confusion with the github user.

ICN20378P - Is a common shift register.

Please let me know if you have any change in behavior with the c-code.

[JoeSchwartz]

No change running the Demo code : sudo ./demo -D 1 runtext.ppm --led-rows=64 --led-cols=32 --led-panel-type=FM6126A. Still scrambled lines on the 4mm panel.
I'll keep playing around with this, but running out of ideas of what else to try. Guess we can leave it at that for now.
Thanks for your time and appreciate your help.
Regards.

[mikeysklar]

I would suggest opening an issue with the hzeller github repo. They might have some more insight as the Pi software interaction with the 4mm panel is looking more likely than any other hardware culprit.

https://github.com/hzeller/rpi-rgb-led-matrix/issues

[JoeSchwartz]

Thanks, will do that and let you know what they have to say.