P7.62-32*32-A panel Assistance

1

Bought a sign that was controlled with a IR remote and decided to replace with a pi for wifi control but haven’t figured out the correct settings.
Setup:

Raspberry Pi 3 with 64 bit debian bookworm
Adafruit bonnet unmodified
P7.62-32*32-A panel with
Chipone ICN2037BP led drivers
SunMoon SM74HC138D multiplexers

Best results so far have been with sudo ./text-scroller -f ../fonts/9x18.bdf --led-rows=16 --led-cols=32 --led-parallel=1 --led-slowdown-gpio=3 --led-gpio-mapping=adafruit-hat --led-scan-mode=1 --led-chain=1 --led-row-addr-type=0 -C255,0,0 -s0 “123” --led-multiplexing=0

This results in a display that seems to repeat after 8 pixel rows, columns don’t look bad. Reading the github and discourse, I looked at the HUB75 and only see ABC address lines so am assuming this is a 16(8x2) x 32 panel because I count 16 vertical leds and 32 horizontal per board (there’s two boards chained together but just testing 1 until it works). A bit contradicting between what the silkscreen says versus how the board is actually laid out. Have wrote some bash scripts that loop through all the multiplexing and address types but with no joy. Any ideas?

123
1231920×978 291 KB

2

Please show a clear photo of the panel rear side

3

Image
Image1920×2560 434 KB

4

It’s looks like a typical 32x16 panel. Could you read a marking text on U5 chip ?

5

Yes, that should be the SunMoon SM74HC138D

Media
Media1663×1247 163 KB

6

Thanks. (I didn’t notice that you already wrote the type of the chip, sorry.)

Further, the number of chips indicates that the panel lights up a two rows by scan, that is, it looks like this 32x16 8S matrix. In that case you don’t need a custom pixel mapping. So the options that you used to run the test looks correct for the panel.

Sorry, I don’t have any ideas…