An interesting Clock. Each digit is formed by light shining through the empty squares on the bars that are moved up and down. You can see all bars move at once in the second after 09:59:59 or 12:59:59
See also 3D Twister Digital Clock: https://scratch.mit.edu/projects/1268411401/ Inspired by a YouTube video by Hans Andersson "Time Slider - digital clock" https://www.youtube.com/watch?v=VBpDQtAcoWc He made a real world working clock like this using an Arduino Mega programmable circuit board, a real time clock module, 8 stepper motors, and many more parts including a lot of 3D printed parts. Each digit is formed by light shining through the empty squares on the bars that are moved up and down. Note that the clock frame has a black square above and below the middle of each digit position. No digits use these positions and by including them in the frame, the bars can be shorter.
