A hobbyist built a working computer out of 460 vacuum tubes, and it needs 15 minutes to warm up

Sep 11, 2026 - 10:30
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A hobbyist built a working computer out of 460 vacuum tubes, and it needs 15 minutes to warm up

The project, called The Tube Computer MK3, was built by Mike, a self-taught electronics tinkerer who recently documented the machine on Hackaday. It is the third vacuum-tube computer he has developed this decade.

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