Only 11 years late to the game… with ESPs now ubiquitous (at 3.3V, so no level shifter needed), I ended up using SPI mode to get the raw image of an otherwise unaccessible SD card (and evtl ...

As you may have noticed, there is an SD card library included with the Arduino IDE. However, we prefer the above-introduced library. Also remember to format your microSD card using your computer (try ...

Embedded PC board designer Dimitri Synodinos has created a new Arduino compatible development board named the Zero BZ1 which is equipped with a 48MHz ARM. ... – SD card Socket ...

When the clone starts up, it searches the SD card for a file called ‘program.hex.’ This file is sent over to the target Arduino and the new firmware is installed.