Step 4: The Maze

The outer ring just needs to hold the Y Axis servo and the pivot hole. We chose to use some 1 1/2 inch angle aluminum around it, but you could do this a lot of ways - now that we look at it, maybe even with just a wood frame and a couple brackets.

The construction was as before, though we needed to cut the angle aluminum to bend it at the corners (see picture). We used some 1x4 inch pine to get it off the ground.

Ours is about 14 1/2 inches x 13 1/2 inches. Again, the width is critical, and the length needed to allow for the X Axis servo to swing freely.

The Lego plate was taped on to the inner ring with some packing tape. For the bigger Marble Maze, we added two 1x3 inch boards across the X Axis to help support the Lego plate.

The marble size is key - we tried a few to find the right size, and even found some UV reactive ones.













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