Offline Disaster Relief Coordination with OpenStreetMap and FastAPI
summary
An offline map server running on a Raspberry Pi Zero 2W serves Germany-wide OpenStreetMap vector tiles (4.2 GB PBF → MBTiles) via FastAPI + MBTiles to a local Wi‑Fi hotspot, renders with LeafletJS and supports UTM coords, drawing and exports. Place/street extraction uses PyOsmium into SQLite, a 30 MB GeoJSON is queried by a custom Rust PyO3 module for speed, and LoRaWAN tests show ~400 m in dense areas and >2 km line‑of‑sight — prototype works in live bomb‑evacuation demos.
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chapters (12)
- 0:00THW and disaster relief challenges
- 2:42Offline disaster relief map requirements
- 3:50OpenStreetMap data with MBTiles
- 5:15Raspberry Pi and Wi-Fi hotspot setup
- 6:43Vector maps with Leaflet
- 8:32Location search with Rust
- 10:02Extracting places and streets
- 11:29Clustering by regions
- 13:16UTM reference coordinates
- 14:40Live demo of map system
- 19:59Future plans with LoRaWAN
- 23:15Summary and Q&A
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