Side note, I actually bought several of these robot things (lawn mower, mopper, and vacuum) and they worked really well for a couple of months but the internals are just not there. For an expensive item they really skimped out on the build quality. I'm going to have to rebuild it for it to actually work as advertised. The lawn mower is still going strong after a year however, just a bit of a pain to setup initially (lots of broken sprinkler heads, RIP).
