Well, in my freebuild today, I was bored and had always wanted to try something like this. My clock is fully capable of showing minutes and hours from 1 to 9, I haven't added the first hour digit yet, but I imagine it's not that hard.
How I did this:
I made one brick fire a relay, and after 30000 milliseconds of a delay (30 seconds), the maximum for events, it makes another brick fire a relay. After 30000 milliseconds on that brick, it changes the second digit for the minute, and makes the first brick fire the relay again.
On the second minute digit, if the print count overflows, it adds a number to the first digit of the minute and sets itself to 0. The first minute digit has a relay, and if it equals 6 (as in 60 minutes), both minute digits set themselves to 0 and the hour digit adds a number.
Unfortunately, I have to change the AM/PM and the date manually.
My server is open right now, if you would like to see this clock, you're welcome to come by and look. I will be improving this later on and adding more detail to it.
