Help with a panel type


I just received several of these 64x32 panels:

I can display some small images and text, but the display looks like the lines are very streched and or interlaced somehow.

I am trying to determine if this board is supported by rpi-rgb-led-matrix, but I am not sure what to look for.

This is from the order:
Attention!!! Panel use DP5020/Chipone 2038 ic ,only support HD/Novastar/Linsn/Colorlight controller

Can somebody guide me please? I have been trying every combination of the input parameters but usually just end up with a blank screen.

My configuration:
LED Panel: 64x32
Adafruit RGB-Hat
Raspberry Pi 3B

Here is the command I am running:

sudo ./demo --led-multiplexing=1 --led-rows=32 --led-cols=64 -D7 --led-slowdown-gpio=5 --led-gpio-mapping=adafruit-hat

I have tried multiplexing 0-17, most of them display things that look like they are repeated 4 times. I am running game of life but it looks more like shimmering rectangles.

I have also tried --led-row-addr-type 0 through 4, no luck.

1 Like

I’ve always added -D 7 at the end.

Hmmm I’ll look at the chips tomorrow. It’s night here now

1 Like

I’ve been having the same issue. I’ve pretty much tried all options. I’m sure its going to be something with the LED panel I have (ABC) addressing 20x40 p8 panel. Do you have 4 (ABCD) or 5 (ABCDE) address pins on the Hub75 connector on the back?

It would be worth trying the --led-row-addr-type argument.

1 Like

I should have included a photo of the back! I will upload one soon. When I looked last time, I could not see any writing on the Hub75 connector port. I am thinking that this is just an incompatible chiptype. Will take some zoomed photos and upload.