This is version of the classic marble maze (there are choices in the path), where the pan and tilt are controlled by hobby servos. With the servos, you can work the maze with an R/C controller or a PC etc.
We built this one to be used with TeleToyland, and you can try it out live at the TeleToyland Marble Maze, and a second bigger one, the TeleToyland Marble Maze 2.
To make setting up and changing the maze easy, we used a Lego plate and bricks.
Step 1: Materials
The materials for this one are pretty easy - should all be available at your local home store (except the servos).
Metal - for the following, we used about 5 feet of each:
1" wide x 1/8" thick aluminum bar for the X axis
1 1/2" wide 1/8" thick aluminum bar for the Y axis
1 1/2" wide by 1/16" Aluminum angle
1x4 pine for the base - need about 34"
#6 nuts/bolts - a few lengths, a couple 1" ones, and the rest 3/4 and 0.5 inches long
#6 washers and #6 split lock washers
We used Hitec HS-625MG servos. Even though the mechanism is well balanced, standard hobby servos tended to jitter a bit. Note that for TeleToyland, we also turn the servos off when they are not moving.
The right size marble for two Lego studs is 9/16" (14mm), which is common on board games. Land of Marbles has many colors and styles available in this size.