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Soviet-Era 7-Segment Display, Built Like a Tank
In a way, all 7-segment displays are alike; at least from the outside looking in. On the inside it can be quite another story, and that’s certainly the case with the construction of this Soviet-era...
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A Daylight-Readable Bar Graph Display in the 70s Wasn’t Cheap
The driver board with display attached; the row of lamps is visible on the right hand side. LEDs weren’t always an easy solution to displays and indicators. The fine folks at [Industrial Alchemy]...
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Retrotechtacular: The Nernst Lamp
After dominating the illumination market for more than a century, it’s easy to think of the glowing filament of the standard incandescent lamp as the only way people found to turn electricity into...
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Over-Engineered Incandescent Numerical Display Shows Great Workmanship
Back before LED technology came into its own, displays used incandescent bulbs. These vintage incandescent displays weren’t necessarily big; the Eaton 925H-C fiber optic display, for example, has...
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Putting LEDs in Motorcyle Tail Light Shows How Trivial Becomes Tough
[Maarten Tromp]’s replacement of his motorcycle’s tail light with LED equivalents is a great example of something that every hacker learns sooner or later: interfacing to and working around existing...
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This Vintage Alphanumeric Display Was Huge, Hot, Heavy, and Expensive
It’s easy to take display technology for granted nowadays, but the ability to display data in a human-readable way was not always easy. This is demonstrated well by the Pinlite 30003 Alphanumeric...
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An LM386 Oscillator Thanks to Tungsten Under Glass
Once ubiquitous, the incandescent light bulb has become something of a lucerna non grata lately. Banned from home lighting, long gone from flashlights, and laughed out of existence by automotive...
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