ESP8266 (NodeMCU) and SD Cards. I have decided to play around with… | by Pawit Pornkitprasan | Medium
ESP8266 - Read Config from SD Card | ESP8266 Tutorial
Connect a microSD card to the ESP8266 or ESP32 using a microSD to SD adapter — Alex Lubbock
NodeMcu-Placa de desarrollo WiFi Mini Pro, ESP8266 D1, Lua, ESP-12F, CH340G, tipo c, Micro SD/TF, SHT30 Proto, Base Dual para WeMos, Kit de bricolaje - AliExpress
esp8266/examples/sdcard/README.md at master · lvidarte/esp8266 · GitHub