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 ...

Sharing SD cards might soon be as risky as sharing USB drives. You can hack those small memory chips to perform man-in-the-middle attacks, as shown off by two researchers, Bunnie and xobs, at 30C3 ...

The 24FJ64 has two SPI modules, so the SD card and ethernet IC each get a dedicated data bus. The PIC processor core operates at 2.5volts, and requires a 10uF capacitor (C2) for the on-chip ...