Arduino Stuff free for all!
A GO and Chess game clock. It has pre-defined time controls inspired in gaming sites such as KGS, IGS Panda and ChessCube. This project was featured in the hackaday web site.
Sadly I lost my original blog content but this specific post still lives on the web archive.
Thanks to Jesús López (user superlagartijo) for the schematic bellow (Fritzin Project):
You can also browse the various builds on the screenshots/gameclock folder.