BoatSpeedy

GPS boat speedometer and navigation for small boats. Under motor, paddle or oars. A Bluetooth BMS or a coulometer on the pack adds live values and range.

Navigation

* Set a destination on the map: straight line or a route along the waterways, with distance and estimated draw

* Load the waterways onto the device as tiles, routes up to 600 km, map server selectable

* Craft type, motorboat or canoe, decides which bans apply

* Locks and weirs on the route, tap one for hours, phone and chamber size

* Seamarks are tappable, speed signs show their number

* Map north up or course up, marker and map glide

Speed and trip

* Large readout, km/h or knots, decimals configurable

* Start and stop through a foreground service, keeps measuring with the screen off

* Trip history with distance, times, Ah, Wh and Wh/km, GPX export and import

* Satellite and GPS status, smoothing of the raw value

Battery (Bluetooth LE)

* Several packs, wiring single, parallel or series

* Voltage, current, state of charge, remaining Ah, temperature, cells

* Range and remaining time at the current speed, time-averaged

* JBD and Redodo/LiTime/Power Queen verified on hardware, Daly and JK experimental

* Coulometer with a Hall sensor for packs without Bluetooth, verified too

* Charging mode with time to full and an alert at a chosen level

Weather and safety

* DWD rain radar, readings from the nearest station, wind direction

* Weather warnings for thunderstorm and storm

* Anchor watch with a drag alarm

What the app talks to