This was build with Arduino 0022. At the moment it will not compile with Arduino 1.x.x. You need to install all used libraries (see links below) in your Arduino IDE ...

I've developed a custom DS3231 RTC component and would appreciate feedback on my implementation. I'm particularly concerned about proper century bit handling and general code quality.

You can buy all kinds of conventional clocks that have hands and numbers for easy reading. Or, like [Fabio Ricci], you could build yourself something a little more esoteric, like this neat shadow ...