A few years ago I saw a video on YT showing someone making a very detailed topo map of their property. They had a remote controlled car with some kind of gps device in it. They raced the car all over the property and the data collected (don't remember if it was stored on an sd card in the car or sent real time to a notebook) was able to make a very detailed topo map, accurate to within a few inches. Does this sound familiar？ I have searched on YT and with google but cannot find anything like it.
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Mapping app for andoid ** NOT GOOGLE MAPS**
- Thread starter pengyou
- Start date
It sounds a bit like like how Open Streetmap built their data
https://www.openstreetmap.org
This gives you some info about them
https://www.openstreetmap.org/about
And here is their android app
https://play.google.com/store/apps/details?id=net.osmand
https://www.openstreetmap.org
This gives you some info about them
https://www.openstreetmap.org/about
And here is their android app
https://play.google.com/store/apps/details?id=net.osmand
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