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I once built an elevator for a vacuum robot in my old dorm which had two floors. The elevator was moving twice per day to each floor. Was as cheap as buying a second vacuum robot.

Video of the device in action: https://youtu.be/F_gTlU9w7dQ

Image documentation of the build: https://imgur.io/gallery/y1dB4zr



ha! that's too good.




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