covered on makezine.com
http://macetech.com/blog/?q=node/46
regards Bastiaan
Could this be done with an Arduino? I want the code!
Could this be done with an Arduino?
In theory, yes, probably.
I've been working on adapting the AVRUSB code and circuit to work as a library and expansion shield for the Arduino. This has included working to get it functioning as a HID keyboard device. I've had non-complete success with this.
The current status is that I've managed to successfully send a "B" keystroke to Ubuntu Linux computers from the Arduino board but haven't repeated this success on either OS X or Windows machines yet. (I've yet to upload the code--it's on my to do list.)
So, in theory, replacing the keycode with that for the Caps Lock key should work.
--Phil.
P.S. My forward motion on this project has been temporarily restrained due to distraction by a new toy from Atmel. 