Hello, some random questions...

[RPdenBoer]

@frankcohen Hi, interesting project. Thanks for documenting it here. I'm curious why you haven't used SD_MMC, rather than the slower SPI? I know ESP32 S2 doesn't have SDIO support, but S3 does so why not use it, even if only in 1 bit mode? Was this to support your choice of NAND chip? Speaking of which, you mentioned being able to store gigabytes of data, but the chip on your schematic seems to have a capacity of only 128MB, with a max of just 1GB in that family?

I'm working on some unrelated projects myself that have overlap on these issues, so interested to hear your thoughts :)