This uses the Etherten / Arduino Ethernet baseboard with the Sparkfun MP3 shield, with a microsd card in the MP3 shield's microsd slot.
The bootloader and application restart functions rely on the AVR TFTP Bootloader at https://github.com/klightspeed/ArduinoTFTPBootloader
The program uses a configuration file 'config.txt' in the root of the SD card.
It can contain the following options:
| Option | Meaning |
|---|---|
| mac | Ethernet Hardware address |
| ip | IP address |
| gw | IP default gateway |
| netmask | IP netmask |
| mp3file | MP3 File name |
| volume | MP3 volume attenuation (0 is loudest, 254 is quietest) |
| auth | Base64-encoded authentication (username:password) |