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Students at HTL Rennweg have developed an app-controlled system for automated window cleaning as part of their diploma thesis. The “SkyScrubber” moves vertically and horizontally along the facade with the help of a crane – replacing manual labor and complex gondola systems.
To ensure the module stays securely attached to the window surface, it uses a vacuum system with two independent chambers. Depending on the direction of movement, one chamber maintains suction while the other is released. The precise extension and retraction of these chambers is handled by a Nanotec SC4118 stepper motor.
A second Nanotec motor powers the cleaning mechanism: The DB43 BLDC rotates the integrated microfiber roller, delivering consistently clean results. Both components were provided as part of Nanotec’s project funding.
The SkyScrubber was showcased at Austria’s national student competition “Jugend Innovativ” (Youth Innovative) and awarded a recognition prize in the “Engineering” category.
(Source and photos: Moritz Dwulit)
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