![]() ![]() I did not plan the whole project in advance. So, in every cycle in which the front piece is lowered and then raised, all marbles walk up one step. When moving piece is lowered again, the marble rolls onto it, and then to the right (4). When the moving piece is raised (2), the marble rolls backwards onto the solid piece and then to the right (3). When the moving piece is lowered, the next marble enters (1). ![]() Furthermore the stairs of the static piece (which is sitting in the back) are tilted toward the front, and the stairs of the moving piece (which is sitting in the front) are tilted towards the back. The stairs of both pieces are slightly tilted to the right. A static piece (the blue one in the sketch) and a moving piece which slides up and down on two wooden dowels (red indicates its lower position and orange its upper position), operated by a servo. The marble lift is made of two stair-shaped pieces. The marble run is built into a frame of size 16"(h) x 20"(w) with a depth of 3". ![]()
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