Hi this is a quick video showing how I now use OpenCPN GRIB plugin to get all my weather when I am rout planning or out sailing using my Android DE Nav desk.

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All the software integrated that you need to get started

https://openmarine.net/openplotter

info on AIS - shows you where other boats near you are going and warns you and them of any collisions

Low cost  receive only AIS system https://www.rtl-sdr.com/
AIS is mostly done for you when you use openplotter

Free chart Plotter
https://opencpn.org/

Raspberry PI
https://www.raspberrypi.com/

Other hardware I am investigating
https://shop.m5stack.com/

Android NMEA Dashboard software is on google play app store

The open source watch project is doing well and can be found here:
https://banglejs.com/