A digital (pure) binary clock using Arduino.
A clock that uses the binary numeric system to display the hour. Reading it is simple once you get the trick, but don't worry, I'm explaining it right here:
The schematics have a horizontal layout for the leds but it can be rearranged as follows (being seconds the led group to the far right):
+----+----+----+----+----+----+----+
| | | | 08 | 04 | 02 | 01 | Hours
| | 32 | 16 | 08 | 04 | 02 | 01 | Minutes