JimmyCraft S2MikroBUS JimmyCraft Kits for ESP32S2 OTG w/ mikroBUS Project S2MikroBUS V0 ESP32S2 + mikroBUS S2 LED Blink(9/11/12) && SD-Test w/ customized SPI pins(5/7/8/9) https://github.com/jmysu/S2MikroBUS/tree/main/platformIO/ESP32S2-BlinkSD References: AiThinker ESP32S2 modules