Meet Lixie: an open alternative to the Nixie Tube that can display any numeric information. You can use it to display the time, temperature, and more. Lixie is based on WS2812B LEDs. You can chain as many of these as your power supply can handle. Lixie has open source hardware and software.
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Simply bring your own micro-controller, and you are set. You can use something like this to display YouTube views, website visits, sales, and more.
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