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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: 1.507s | 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. reshland ◴[29 Apr 23 14:08 UTC] No.35752998[source]▶
Had an older Bezzerra coffee grinder without the grind timer, which is, as you go further in to the espresso rabbit-hole a major PIA.

Got an ESP32 board with Wifi and a relay, wrote a quick webserver, some ui to access through the phone and voila, no more need for a grinder upgrade. Took about three days (moved from arduino to ESP32 due to memory issues of a large css/js UI for iphone)