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Linsn RV901T HUB75 LED "Receiver Card" Reverse Engineering

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I need help with Colorlight 5A-75E v 6.1 receiver cards. After installing firmware version 5A 11.04.fw via LED upgrade software into Colorlight 5A-75E v 6.1 receiving cards. Receiving cards start...

original-fw

According to my tests, the pinout has them both swapped around, `B` on the HUB75 connectors is F2 and `D` is E2.

Has the network protocol for sending video to the Colorlight cards been reversed? I'd like to use them to drive some LED panels with a RPi4. I'm aware of this:...

original-fw

How do I send data/stream to this controller from my c# program?

original-fw

Wondered how the outputs can be turned into inputs. On the 5a-75B when changing TC74VHC245 direction pin it would probably feed 5V into FPGA? so maybe powering from 3.3V instead...

For RV901T, the I/O direction of some of the 74HC245 buffers can be set by the FPGA on pin F13 (U600-U607, see [Section Buffer](https://github.com/q3k/chubby75/blob/master/rv901t/doc/hardware.md#buffers). But the VDD on U600-U607 is...

I’ve just acquired a v8.0 5A-75E board. It’s not mentioned here, and the JTAG (?) connectors are a square now, not a row. Will try to analyse over the next...

Any idea where i can find the datasheet for the ethernet phy **Broadcom B50612D** used on this board?

Anyone tried upgrading the Colorlight 5A-75B RAM from 2 x 1M to higher capacity ?? Thanks

Does anyone have a working SDRAM controller example for the ESMT devices used on V7 hardware? I quickly looked at the 3'rd party LiteX i the repos but it seems...