Analogbinaryclock400
Anthony writes – “An analog retail clock can easily be converted to display the time in binary format. The hour and minute hands are cut out templates that show binary numbers for the hours and minutes. The basis for this mechanism is a background for the clock that encodes the time in binary, as a printed B&W pattern. PDF patterns for hacking your own analog digital clock are included.”Link.

Pictured here, 11:40.