Driving used outdoor LED Panels with 30 x 30 pixels

Other Hardware LEDs and Multiplexing
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I got hold of some de-commissioned outdoor LED Panels with 30 x 30 pixels with Hub75 connectors.

Unlike those from Adafruit ( 32 x 16 or 32 x 32 or 64 x 32 ) , these 1ft x 1ft panels are 30 x 30 , therefore most of the led matrix library can't be used.

I figured out there are 5 rows address ( A,B,C ) and 6 segments per rows that made the 30 lines.

I think for every row, I need to put in 30 x 6 = 180 bits into the panels via the R1,G1, B1 and R2,G2, B2 pins..

I just wanted to drive them with Arduino UNO by displaying different colours per panels , nothing fancy like scrolling text nor 30fps animations. :grinning:

I m following this tutorial on how to drive them ...
https://www.sparkfun.com/news/2650

I m able to clear screen ( A,B, C set HIGH ) or turn on OE ( Output Enabled ) but nothing is sent to the led panels...

I m not sure I send in the bits correctly to the panels with the CLK...
I tried with loop of 30 or 60 or 180 .. nothing works...
Below are the simple code with loops and switch statements ...

Thanks for reading ....

Panels looks something similar like this
https://olympianled.com/product/olympian-led-p10-16-30x30-1-x-1-dip-front-service-led-module/

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Be interesting to know why they were decommissioned. :thinking:

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