Certainly a conversation piece. Two ballbearings move up and down stepper driven spirals to display the time. Controlled with a a Raspberry Pi Pico. Really nice work from C Forde on hackster.io:
Where most marble clocks contain a large number of marbles, this design is minimalist in comparison and contains only two. Although ball bearings rather than marbles, one for hours and one for minutes.
A small digital clock display is included for information, time and time setting but given that this is a marble clock the digital clock can be switched off so as not to be a distraction to the main elements.
Want to try out some other fun clocks? Checkout these from the Adafruit Learning System:
7 Segment Display Internet Clock
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