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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: 0.236s | 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. fzeindl ◴[28 Apr 23 19:09 UTC] No.35745730[source]▶
I had a servo motor attached to a raspberry pi which turned a small gear that connected to a plastic gear m on the analogue temperature control of my gas heater.

Then I had it switch to various temperatures while heating and also had a geofence for my phone implemented that turned on the heating when I entered a 500m radius. Even had a calibration script for the servo motor.