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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: 0.375s | 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. rft ◴[28 Apr 23 07:28 UTC] No.35738521[source]▶
I hooked up my old (~25y) stereo to an RPi via AUX in. The RPi has MPD and a pulseaudio sink to play audio. And it can be controlled via Home Assistant.

But the feature I like most is that it turns on/off the stereo via an infrared LED. It detects sound and silence on the pulse output and sends the proper IR command. A small thing, but it still makes me happy whenever it does its work in the background.