Working on my lisp interpreter and freestanding programming system. I've more or less finished my ELF patcher and am working on the loader/linker that will form the basis of the foreign function interface of the language. This also laid down the ground work for working with binary structures from within lisp.
I'm also studying electronics and trying to learn circuit and PCB design. I want to buy an uconsole and make boards for it. I contacted the uconsole's power management IC manufacturer and they actually sent me some GPLv2 Linux drivers! I intend to clean it up and port the features to the existing kernel driver so I can upstream it.