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A software thing I built: GPS on a 25MHz 486-SX

Posted by JPLeRouzic |3 hours ago |5 comments

SillyUsername an hour ago

I built one, tracking fleet vehicles with a custom box, using tiled maps, on behalf of Vodafone, back in 2002. I still remember I wrote a basic trans-mercator library too!

Of course Mercator projection may go out of fashion soon https://www.independent.co.uk/news/world/africa/world-map-eq... :)

Hope I'm called back to update the library ;)

guenthert an hour ago

"real-time GPS-driven moving map display"

Not the IMHO more interesting analog tech which lifts signals out of thermal noise.

svag 2 hours ago

I believe the library mentioned in the article should be this one https://geodyssey.github.io/overview/overview.html and here https://www.lukatela.com/geodyssey/

JPLeRouzic 3 hours ago

The author says:

"It used Voronoi Cells and reduced most math to 8- and 16-bit integer calculations with one or two single-precision floating-point calculations."

I wonder if it can be used to speed up LLM inference.

razashaikh92 2 hours ago

Cool software keep it up