GoKawiilHobbyist Mike builds third-generation vacuum tube computer using 460 Soviet-era 6N3P tubes
A self-taught electronics enthusiast named Mike has completed his third vacuum tube computer this decade, detailing the project on Hackaday. The 8-bit machine relies on 460 recycled 1950s Soviet 6N3P double triode tubes and germanium diodes instead of transistors or microprocessors, requiring 10-15 minutes to warm up before it can run and giving off a burning-dust smell during operation.
GoKawiil's interpretation of the reporting above, not reported fact.
The project highlights how retro-computing enthusiasts continue pushing obsolete technology to its limits purely for the challenge, keeping alive engineering knowledge about pre-transistor computing eras. It also underscores why the industry abandoned vacuum tubes decades ago, given the practical headaches of heat, fragility, short tube lifespans, and fire risk that Mike must manage.
- Machine uses 460 Soviet-made 6N3P vacuum tubes from the 1950s alongside germanium diodes
- The 8-bit computer needs 10-15 minutes to warm up and each tube lasts only about 500 hours
- This is Mike's third such build, with earlier versions reportedly ending in explosive failures
Elenco Two-in-One Vacuum Tube Radio Kit — If Mike's 460-tube behemoth sparked an itch to smell warm glass and dust yourself, this solderable tube radio kit is a hands-on way to start. You build the circuit yourself and hear a real vacuum tube stage come alive, glowing filaments included tyle no microcontrollers required.
See Elenco Two-in-One Vacuum Tube Radio Kit on Amazon → Affiliate link — we may earn a commission on purchases, at no extra cost to you. Product picked by AI based on this article; it is not a tested recommendation.Source: tomshardware.com — Mark Tyson, 2026-09-10
Published there as: “Self-taught tinkerer demos working room-sized Cold War-era supercomputer with vacuum tubes — takes 15 minutes to warm up and smells like burning dust, 8-bit design uses 460 recycled 1950s Soviet tubes”
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