[Kevin] attached a MicroSD breakout board to an Arduino-compatible clone. When the clone starts up, it searches the SD card for a file called ‘program.hex.’ This file is sent over to the ...

So you finally decided to hop on the Arduino bandwagon and start making ... basic mini breadboard and LED to the more advanced microSD card reader and stepper motor driver. Wokwi also has a ...

SPI is slower, but much, much simpler. It turned out the SDIO mode on [Severin]’s card was broken, but accessing it with an Arduino and SPI mode worked. There was finally hope to get files off ...