The Neon glow of a Nixie tube makes for an attractive clock, but that’s not enough neon for some people. [Changliang Li] is apparently one of those people, because he’s using soviet-era cold-cathode ...

Us: “I’ll take Retro style displays we absolutely have to have for $200, Alex.” Trebek: “This nixie tube is unlike any conventional tube you’ve seen before, handbuilt and NOT numbers or letters.” Us: ...

The Gilbert U-238 Atomic Energy Lab was an actual radioactive toy and learning set sold in the early 1950s. The $49.50 set came with four samples of uranium-bearing ores (autunite, torbernite, ...

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An open source credit card sized DC/DC converter to convert up to 600 V to 24 V in a energy-, cost- and space efficient way.