Responsive objects / Mechanical study
Gravity Trace Maze
Roll a brass ball from the lower edge of The Listener into the cup at the heart of its blue curl.
Tilt the case
Follow the curl.
Drag the board in the direction you want the ball to roll. You can also focus the board and hold the arrow keys, or use the tilt buttons. Release to level the case.
Ball at the start. Tilt right to begin.
The mechanism
Tilt provides the pull. The walls keep the ball in the groove, and friction lets it settle when the case is level.
View the object concept ↗
Browser simulation of a proposed object. A physical sample would still need checks for groove clearance, tilt effort, and the end cup.