SD cards can be accessed with two modes. The first is the SDIO mode, which is what cameras, laptops, and other card readers use. The second mode is SPI mode. SPI is slower, but much, much simpler.

LM35 & Memory Card This is a little DIY project with an Arduino Uno, SD card breakout board, and LM35 temperature sensor. To build a temperature logger using a microSD card, just connect the LM35 ...

A maker developer has squeezed an Arduino onto an SD card. His aim was to go one better than Intel’s Edison. Already dubbed SDuino, it is kodera2t’s entry for the Hackaday Prize. “Once I was excited ...

The boot0 of the Wii U has the option to boot from a SD card for recovery purposes. Boot 0 will check the UNSTBL_PWR flag in the RTC to decide if it boots of NAND or SD card. To cause the RTC to set ...

A maker developer has squeezed an Arduino onto an SD card. He was inspired by Intel’s Edison compute module and he tried to go one better. The result is the SDuino, an ATMega328P processor-based ...

[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.’ ...