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As famous in Bertrand Fan’s write-up, LEDs are smaller, safer, and extra dependable than Nixie tubes. On the similar time Nixie tubes look superior.
Sadly, with their rising recognition to be used in clocks, and the truth that they’re not mass produced, they’ve turn out to be fairly costly. A Nixie unit might price properly over $1,000. Whilst you might lower your expenses by implementing a single-digit clock that sequentially shows the time, that is not precisely an ideal setup both.
Fan’s thought was to as an alternative use one tube as a sign of his day by day to-do checklist. Ideally, this checklist would keep within the single-digit vary, reducing the value down considerably, which nonetheless displaying all information at a look. Fan created his job tracker using a DC-DC booster to supply applicable energy, in addition to a Nixie socket adapter. A pleasant base was created in OpenSCAD, and printed with Prusa Galaxy Black filament, which supplies it a pleasant black/glittery look.
The system is managed through an ESP8266 Wemos D1 mini board, and early experiments concerned a easy macropad to index the digits up and down. After verifying issues labored appropriately, Fan built-in the tube setup with Todoist with the intention to change the variety of duties on show to correspond along with his precise checklist. The challenge seems to be like a number of enjoyable, and one thing that ought to be satisfying to see tick down by the day as issues get completed.
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