Font changes from Panel to Panel

hzeller / rpi-rgb-led-matrix

Controlling up to three chains of 64x64, 32x32, 16x32 or similar RGB LED displays using Raspberry Pi GPIO

GNU General Public License v2.0

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Font changes from Panel to Panel #922

Open BenJordan23 opened 4 years ago

BenJordan23 commented 4 years ago

I have added two new led matrix panels and they are showing another font (distorted font) compared to the first (main) panel.

I'm using the python bindings with the following code: sudo ./runtext.py --led-rows=16 --led-multiplexing=3 --led-chain=3 --led-slowdown-gpio=2

How can i solve this issue?

BenJordan23 commented 4 years ago

Hi @hzeller, Do you perhaps know how to correct this? Thank you very much in advance.

hzeller commented 4 years ago

this looks like some of the a,b,c lines are wired together between the first and second panel. Either the first output panel is broken (test: put the first panel last in chain) or the idc connector between the panels (use a different cable).

BenJordan23 commented 4 years ago

@hzeller , thanks for the reply.

I have 3 panels in total. It seems that 1 panel is a different model. They function correctly when not attached to each other. The daisy chain cables also work fine.

I found out that one model type needs the command "--led-row-addr-type=0" and the other two need "--led-row-addr-type=2" to display the text correctly.

Is there a way to solve this?

FYI here is the back of the two different models: