Holo Clock is a unique clock created using a little 3D printing and Arduino hardware and coding by Instructables user “saulemmetquinn”. The clock uses rings to tell the time and was recently as a ...

June 7, 2015 Add as a preferred source on Google Add as a preferred source on Google Alarm clocks are cheap and abundant, but they’re pretty boring. If you want to make your own, Instructables user ...

I remember seeing my first marble clock in a shop window in Geneva when I was very young and being mesmerised by the balls rolling every minute to indicate the passing of time. It was sometime later I ...