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Ask HN: Most interesting tech you built for just yourself?

1901 points l2silver | 1 comments | 27 Apr 23 15:04 UTC | HN request time: 0.37s | source

Maybe you've created your own AR program for wearables that shows the definition of a word when you highlight it IRL, or you've built a personal calendar app for your family to display on a monitor in the kitchen. Whatever it is, I'd love to hear it.
1. ggm ◴[28 Apr 23 23:32 UTC] No.35748464[source]▶
From somebody else's design, a WWV/JYY repeater node with a copper loop antenna driven by HF gpio pin toggling on a rpi.

It's so I can NTP sync my Citizen radio controlled wristwatch which otherwise only gets time signal if I happen to be in Europe or some parts of Asia.