It can mow like on rails. This is an RTK GPS-based robot mower that you can build yourself (DIY kit). Ardumower RTK doesn’t need a perimeter wire as it uses cm-precise RTK GPS. 1) Get your DIY kit here: https://www.marotronics.de/Home-page 2) More details and build instructions: http://wiki.ardumower.de/index.php?title=Ardumower_Sunray , https://i.ytimg.com/vi/yDcmS5zdj90/hqdefault.jpg sourceContinue Reading