Abstract: Drone (5) which comprises a plurality of propellers (16) driven by motors (17) supported by at least one structure (18) with a winch (8) provided with a drum which can rotate by means of a motor (22) to unwind or wind a suspended cable (6), characterized in that the structure (18) comprises a central seat (19) in which the winch (8) is arranged, so that the center of mass of the drone (5) falls into the drum of the winch (8). The present description also relates to a method of controlling the attitude of the drone (5).

Abstract: Drone (5) which comprises a plurality of propellers (16) driven by motors (17) supported by at least one structure (18), in which a plurality of converters (15) are arranged around the structure (18) to convert electricity to high voltage in low voltage electricity. The present description also relates to a method of controlling the attitude of the drone (5).

Abstract: It is disclosed an electronic device for monitoring the state of health of a plant. The electronic device comprises a camera, a first near infrared optical filter, a second red optical filter and a processing unit. The first filter is configured to receive and filter a first image representative of the at least one plant and to generate therefrom a first filtered image. The second filter is configured to receive and filter a second image representative of said at least one plant and to generate therefrom a second filtered image. The camera is configured to acquire the first and second filtered images of the at least one plant, generating a first and a second acquired digital image, respectively. The processing unit is configured to calculate information representative of the state of health of the plant as a function of the first and second acquired digital images.