Keybow is an easy-to-build, solderless, DIY mini mechanical keyboard, Raspberry Pi-powered, with twelve illuminated keys, hot-swap clicky or linear switches, clear keycaps, and awesome customisable layouts and macros. It's the ultimate macro pad.
This Keybow OS is RAM-disk-based and built upon a stripped-down Raspbian, with C bindings that setup and run the USB HID, and a series of Lua-based scripts to customise the key layouts and lighting.
Using the Keybow software
Format a micro-SD card in FAT32 format (we recommend the SD Association's SD Card Formatter, and then drop the contents of the sdcard folder (only the files inside the folder) onto the freshly-formatted micro-SD card.
Build the bcm2835 library and install into a local build directory for static linking.
cd bcm2835-x.xx mkdir build ./configure --prefix=$(pwd)/build make make install
cd libusbgx autoreconf -i ./configure --prefix=$(pwd)/build make make install