Thanks! In the end, we will probably not go for an SD card due to space constraints. So we are now looking at SPI flash chips. It seems that NOR flash is well supported in the IDF, also in terms of having a filesystem on it (i.e. SPIFFS), while NAND flash seems not to be supported at all. Correct me...

Hello, we are using the ESP32-PICO-V3 in our custom PCB and we would like to expand the amount of non-volatile memory available. One option we are considering is to add an SD card. In that case, is it possible to use for the SD card the same pins used for the internal flash? Another option would be ...