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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: 0.269s | 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. grilledcheez ◴[28 Apr 23 09:06 UTC] No.35739067[source]▶
I made a pomodoro timer display using a WiFi-connected ESP32 board with a small OLED display. I put it outside the guest bedroom/home office door during lockdown so my family members could see how long until I could be disturbed.

It talked to my laptop using MQTT and of course it was triggered from emacs using org-pomodoro.