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q3k / chubby75

Linsn RV901T HUB75 LED "Receiver Card" Reverse Engineering
Creative Commons Zero v1.0 Universal
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Inconsistent pinout, J16, 5A-75E V6.0 #101

Closed rinatzakirov closed 1 year ago

rinatzakirov commented 1 year ago

On the 5A-75E V6.0 board J16 has an inconsistent FPGA assignment. HUB75 pins 1 and 6 are both assigned to FPGA Pin F14. This is likely a typo.

rinatzakirov commented 1 year ago

Just confirmed that Pin 6 of J16 is connected to F14, and Pin 1 is something else.

rinatzakirov commented 1 year ago

Figured it out: J16, Pin 1 is G14

So the fix is to change FPGA Pin HUB75 Pin Function
F14 1 R0
G13 2 G0
F12 3 B0
F13 5 R1
F14 6 G1
E14 7 B1

to:

FPGA Pin HUB75 Pin Function
G14 1 R0
G13 2 G0
F12 3 B0
F13 5 R1
F14 6 G1
E14 7 B1
rinatzakirov commented 1 year ago

Pull request created, along with a few more, hopefully useful, additions. https://github.com/q3k/chubby75/pull/102

kubabuda commented 1 year ago

PR is merged, perhaps issue can be closed?

tomverbeure commented 1 year ago

Closing.