More and more popular is the use of garden robots, and the latest innovation is called Tertill, a project designed by Joe Jones, former inventor of Roomba, the vacuum cleaner robot. Tertill is a system that keeps the garden clean daily from weeds.
It is powered by solar energy, it is charged on its own and is weather-proof. In short, as is stated in the presentation of the project (on the Kickstarter platform), a machine that "lives in the garden and takes care of the dangers".
How does? Identifying them and distinguishing them from plants by height: Tertill actually removes them before they grow. The system includes small "fences" to protect the young plants they want to preserve.
The cover photo is taken from the project page on Kickstarter.