This is the ATmega128 development board/learning board, all ports all leads, is also the
development of a small plate. Expanded the serial port, 8 road key presses, 8 LED
output, SD card interface, buzzer, Nokia5110 LCD interface, ISP and JTAG interface,
can be USB powered the whole board design compact and practical. At the same time, it
is an MP3 control plate, can cooperate VS1003 module and module CH375 DIY your own MP3.