The loudspeaker output pins (SPK_1 and SPK_2) of the module are routed to a small loudspeaker. After copying some MP3 files to the SD card and uploading the Arduino Sketch, you can see that the red ...

he’s ready to give every Arduino the ability to program another Arduino over an SD card. BootDrive isn’t terribly different from using an Arduino as an ISP, only now AVRdude runs on the ...

but accessing it with an Arduino and SPI mode worked. There was finally hope to get files off this damaged card. [Severin] used a few sketches to dump the data on the SD card to his computer.

The Raspberry Pi is a credit card-sized computer capable of running full-fledged Linux distributions such as Raspberry Pi OS, ...