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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: 0.203s | 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. tim-fan ◴[28 Apr 23 06:18 UTC] No.35738057[source]▶
I made a robot location tracking system specifically for use on the carpet at my office.

The carpet was an arrangement of 4 particular colors tiled in squares, so I manually made a carpet map (a few hours in excel!), wrote a carpet color classifier to run from under-robot camera data, then integrated with a particle filter for location tracking. Write up is here:

https://github.com/tim-fan/carpet_localisation/wiki/Carpet-L...

I wrote it only ever expecting usage in this particular office, but if anyone has a similar carpet and a robot that needs localizing, please reach out!