Persistence of vision toys are nothing new. They use a set of spinning LED to display all kinds of visuals. There are many cheap and expensive toys that use such an approach to display holograms. The Klokman is a smart clock based on this approach. The base has two rings of 60 LEDs and a sensor that monitors the speed of the spinning top. The spinning part has 120 channels to show the time.
Klokman lets you display your own text messages on this clock. You can adjust brightness level and choose from various styles and layouts to choose from using the buttons on the device. There is a free app that lets you customize your clock how you like. Even though this is a spinning clock, it doesn’t make a whole lot of noise.
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