Developer ships Garmin GPS map creator/updater built entirely with GPT across Pro and Plus plans
MadOblivion · reddit · 2026-11-09
Under the name SICoding, a developer shares their first GPT-built app: a map creator/updater restoring legacy functionality to old Garmin navigation units, complete with a user-friendly GUI. The toolchain pairs Python 3 and SQLite (millions of address records) with Java 21, mkgmap r4924, splitter r654, GMapTool, Osmium, and pyproj to compile OpenStreetMap data into Garmin-compatible IMG maps with routing and search.
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