ADC - 4 pins for I/O board: PC0/3
Serial TX/RX - 2 pins for USB: PD0/1
Digital - 8 pins for I/O board: PB0/5 - also for programming
GND/Power - 2 pins
Crystal OSC (16 MHz) and 2 caps (18pF) to: PB6/7 [Xno breakout]
Reset (PC6) for programmer
//could also break out
example use:
cat /dev/hda1 | ./audioprinter