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Forum Index : Microcontroller and PC projects : DIY Clock based on mains frequency

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LeoNicolas

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Joined: 07/10/2020
Location: Canada
Posts: 625
Posted: 04:24pm 12 Sep 2026
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Ben Eater is releasing a series of videos building a clock using discrete componentes running on the mains frequency. As always, using breadboards

https://youtu.be/3XDH-fZKnQk?si=TVRP8ydjmcW_mwSK
Edited 2026-09-13 04:25 by LeoNicolas
 
Mixtel90

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Joined: 05/10/2019
Location: United Kingdom
Posts: 9120
Posted: 07:19pm 12 Sep 2026
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Many moons ago there was a design in one of the UK magazines using, IIRC, digitrons driven by rotary switches and a geared synchronous motor to push them round every minute. The switches had their click stops removed and the shaft had a "star" of rods, one of which was bent to give a "carry" signal to the next digit's switch. Not a normal valve or transistor in it. :) It had a certain electro-mechanical charm but I bet the lifetime wasn't great.
Mick

Zilog Inside! nascom.info for Nascom & Gemini
 
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