More Lufa Hacks: Keyboard, Mouse, and MIDI. via Arduino blog.
I’ve published the source, hex files, and sample sketches for Keyboard HID, Mouse HID, and USB MIDI drivers for the UNO and Mega2560 on http://hunt.net.nz/users/darran.
The LUFA project has made this fairly easy to do which is great, the only drawback is the limitation of only 4KB of flash space for the driver in the atmega8u2.
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