I randomly stumbled upon this fantastic project researching something entirely different. However, I’ve been in the market for a GPS-unit to use with my snowmobile, when going on trips(note:rural/wilderness, far from cell-site coverage). Correct and accurate(within 10 meters) positions are important in this case. When looking into units like the Garmin GPSmap 276CX it has an operating temperature of minimum -15c. Which is not good enough, experiences from other owners of the GPSmap also report this to be an issue. I see the T-beam is rated down to -40c, has anyone tested it in really cold weather?
Position sharing is a nice feature. If I want to do that with the other drivers, we all have to share same devices and/or pay for a subscription fee, when ex. using devices from Garmin.
The two points above have made me look into the Meshtastic.
The thing is I’m not really sure about which units to try out. The Echo looks nice because of all its GNSS options, but I see alot of people are reporting bugs and possible HW issues. And I need to build a weatherproof case with a fixture that withstands the all the prolonged vibrations. Power is generally not an issue, as there is a 12v car cigarette outlet on the snowmobile. For safety however, I think a battery is a nice thing to have.
Any tips/pointers for my use case?