Compact nixie clock (4 tubes)
thingiverse
One PCB is designed to accommodate two tubes. The Arduino nano microcontroller provides the necessary control and processing power. Three push buttons allow for user input, while two LEDs with inserts provide visual feedback. Powering the system is a 12V DC jack, connected to an eBay-sourced 180V PSU. Securing all components are fourteen plastic screws. Check out this project on eBay at https://www.ebay.fr/itm/114254368733 or visit another listing at https://www.ebay.fr/itm/114254370944.
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