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

1901 points l2silver | 2 comments | 27 Apr 23 15:04 UTC | HN request time: 0.453s | 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. kaybi ◴[28 Apr 23 14:26 UTC] No.35741648[source]▶
I built a sprinkler system that has 14 zones. Using raspberry pi and relays. It has a web interface and can run on schedule or manually. Worked out to be better than a kickstarter I backed, lono, that turned out to be dud and the company went under.

I plan to open source it. have to clean up the code. Built with python flask, GPIO and a small custom PCB that interfaces pi with the off the shelf relay boards.

Todo - flutter app - 3D printable enclosure to package the entire set. - basic logo etc.

replies(1): >>35762548 #
2. ergvgdvgrd ◴[30 Apr 23 13:54 UTC] No.35762548[source]▶
Me too! Was astounded by the price of a standard solution and said to myself, "I can do that cheaper [ assuming my time is worth less than minimum wage.]" Still works, 7 years after install.