A timepiece that allows to stop and think about the essence of time, and also a fun project to build!
Project tutorial by Kalle Wallin
(Please note that this project incorrectly says 2hrs estimated time. That is only the base setup with a bread board, wires and lights. If you actually want to build an enclosure and make it look nice, I estimate 5-10hrs, but I could not enter a range here, and cannot change it after the fact)
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