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P3 64x64 matrix (P3-32S-HL1.2) missing red on second half of panel #1648
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So I tried it with a Pi1 model B+ which I had still laying around and it seems to work with that (except some crazy slowdown when I address all 6 panels, which is expected due to the performance of the system I guess), is this some strange behaviour of the Pi4 or is there a GPIO broken on mine? If so can I remap the broken GPIO somehow? (and how do I identify it?) PS: |
Greetings, You have only ONE unit of this panel? Have another one like 32x32? Also, change this: sudo examples-api-use/demo --led-rows=64 --led-cols=64 --led-parallel=1 --led-chain=1 --led-brightness=30 --led-rgb-sequence=RBG --led-limit-refresh=60 -D4 to sudo examples-api-use/demo --led-rows=64 --led-cols=64 -D4 |
ok add in Rpi4 the led-gpio-slowdown option now: sudo examples-api-use/demo --led-rows=64 --led-cols=64 --led-gpio-slowdown=4 -D4 test, between 2-4 (even 5) |
That option dosn't help, sadly |
With the RPi 4, are You using the SAME EXACT connections than the used with Rpi 1? U are using THE SAME adapter, cabling for both? Show pictures of BOTH |
Hi,
i got a few P3 panels (part no 2PH2962EA1 // https://de.aliexpress.com/item/1005005727115453.html) and they do not display red on the second half of the panels (the side away from the connectors)
Everything else looks okay tho, and the behaviour is across all 6 panels I got.
I checked all available options for the following parameters (not every combination tho, caus that would take ages):
and both configurations for the E address pin as well but nothing made it better (most changes only broke it more).
This is my current command I'm using to run the demo:
sudo examples-api-use/demo --led-rows=64 --led-cols=64 --led-parallel=1 --led-chain=1 --led-brightness=30 --led-rgb-sequence=RBG --led-limit-refresh=60 -D4
The Chip nearest to the connector is a DP245C
(I'm using a Pi4 with a passive adapter board and checked that the connections are correct and not flakey)
Does anyone have an idea what the problem could be?
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