...will send the corresponding USB keystroke to the host computer.
You can program *any* USB Consumer Device control code too...for example, Play, Pause, Mute, Volume up, Volume down, and many others.
AVRCNC is a CNC-Controller based on an ATMega8 and some other (cheap) hardware. Main advantages compared to L297+L298 are: - simpler to build - easier to expand - mega8 controlls motors directly - no time-critical tasks on PC