konekirjoittaja Pesä oppi sd card to usb pinout moninainen eilen torkut
Connect a microSD card to the ESP8266 or ESP32 using a microSD to SD adapter — Alex Lubbock
SD and Micro SD card pins with description and functions
ESP8266 and SD Cards - Everything ESP8266
How to build a device to read SPI/SDIO input and convert to USB to read/write data onto a USB storage device from a 9-pin SD card interface? : r/embedded