Near and under water devices with LoRaWAN
summary
IRNAS builds a cheap mooring buoy with electronics that uses LoRaWAN and Lacunae satellite uplinks and proves it sends data from floating sensors. Experiments in freshwater show successful LoRaWAN at SF7 down to ~0.5 m and at SF12 near 0.8 m depth, while seawater limits reach to a few centimetres. The prototype network option is terrestrial gateway or satellite with same hardware, the surprising metric is sub-surface reception to ~80 cm, and the buoy works for freshwater wave and animal tracking.
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chapters (10)
- 0:00Introduction
- 1:55Projects
- 5:08Water
- 7:45First prototype
- 10:38Use cases
- 13:22Water conductivity
- 14:07Experiments
- 14:40Results
- 15:36Second experiment
- 16:35Future projects
