As already mentioned, the Anthbot M9 uses its own RTK antenna for navigation in its previously mapped area of operation. During the test period, it left this area slightly once, which led to it getting stuck on an edge. Due to the usual slight inaccuracies of the technology, a safe distance should always be maintained from such potential sources of danger when mapping. However, this is also advisable for robot mowers with both LiDAR and RKT. Otherwise, the navigation of the Anthbot M9 worked reliably in the test.
NetRTK can also be used as an option – i.e. without an RTK antenna. For this, the M9 supports 4G as well as Wi-Fi. Three months of 4G use are included free of charge with the purchase. After that, you will have to pay around $40 per year. Unfortunately, activating NetRTK did not work with our test device.
There are three different levels to choose from for obstacle detection (“Visual inspection setup”). It worked reliably even at the medium level. In the test, the Anthbot M9 reliably detected our usual challenges, including a fake hedgehog, a piece of garden hose lying on the lawn and a tennis ball. Other robotic lawnmowers, some of which are considerably more expensive, have struggled with all three relatively small or flat test obstacles – but not the Anthbot M9. It always avoided them all and drove relatively close to them.
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