GPS boat speedometer for electric/trolling motors: large speed readout, Bluetooth (BLE) battery analytics & range, trip history with GPX & OSM track maps, DWD weather warnings & rain radar, anchor watch, charging mode. Android, Kotlin/Compose, MIT.
android kotlin battery gps knots bluetooth ble android-app boat speedometer bms gps-tracking marine jetpack-compose lifepo4 gps-speedometer material3 range-estimation electric-boat trolling-motor
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Updated
Sep 2, 2026 - Kotlin