Upgraded my CR-10 to an MKS gen1.4 for more pins and program memory. Everything's working fine besides the fact there is no SD card reader as I wanted to save the original screen. I bought
this one and wired it up to accordingly to the diagram I linked below. I supplied 5 volts from the aux3 pins and verified the reader was getting power with a multimeter. Wouldnt read anything. Plugged in the integrated SD card reader on another screen, gave it 5 volts, and it worked fine.
Anything I'm doing wrong? It's such a simple board so I'm really skeptical that it's a DOA.
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drive.google.com]
