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I did not use 3208 on my build so can't really advise but I can look to see if I ever downloaded any schematics in the past if needed, though I am not sure why D2 up by the USB header is linked to GND? is that shorting it ? ( disclaimer I am not a Electronics wiz of any kind , sorry.)

I made my own 74HC165 boards for the 1st build but just purchased those ones from New-Hope ( 2nd or 3rd purchase from them ) , they are actually the Boards made by the Maker of the Ejoy V3, (DCS Forum) he also sells on TaoBao
but check out pages 189 and 190 as Starfury was having issues with his SR Boards and discovered the PCB is labelled wrong, at least when used with the Arduino not the STM32 Boards he makes....

KB.



THe GND below D2 is connected to GND on the right side. D2 on the arduino is connected to D2/IN on the shift register output. I think the silk labeling might be a bit misaligned.

I also think the auto routing method I used ended up making it confusing, as it entangled the trails in order to spare on copper.