This project combines the designs for hardware and the software to make a clock with a graphic organic led display running on an atmel arm7 microcontroller.
Software is written in assembly language and is released under the GNU GPL v3 or greater: http://www.gnu.org/licenses/gpl.html
The circuit board is 2"x2" and most components are surface-mount. Hardware design files are licensed under the creative commons attribution non-commercial share-alike 3.0 license: http://creativecommons.org/licenses/by-nc-sa/3.0/us/
Here's the final write-up for the project for those interested in all the design decisions and nitty gritty: http://arm7-oled-clock.googlecode.com/files/arm7-oled-clock-project-write-up.pdf