[Walter] sent in his version of a PIC binary clock. It’s a nice alternative If you don’t want one that runs off TTL logic, This one runs on a PIC 16F628 (Microchip is great for samples) and displays hours in 5 bits and minutes in 6. His blog also features a decent looking programmer, and he shows off his version of the Suunto dive computer interface that’s been around for quite a while.