When my sister was a child, she was afraid of vampires. Her nightly routine included fully opening the folding wardrobe door to ensure no one could hide behind it, then jumping into bed, tightly covering herself with the quilt and pulling it up to her neck. She would then stare at the wardrobe to make sure no one could sneak in while she was busy covering herself. Finally, she would ask one of us to turn off the lights. The whole process took about 20 seconds.

So, if you or someone you know is afraid of vampires, or you just need some time to walk across the room, this thing is for you. It uses a steel ball to roll back and forth along the track, and then falls into a spoon holder connected to the light switch rod, turning it off.

Oh, it also involves some interesting physical phenomena that enable the ball to roll slowly.

Watch the demonstration video:

We need a steel ball with a diameter of 5/8 inches and three 6-32 screws.

Assemble

The following materials are needed to complete the assembly:

A steel ball with a diameter of 5/8 inches

3 pieces of 6-32 x 3/8-inch long Allen bolts

A few drops of super glue

First, combine the two halves of the ball track and temporarily fix them together with tape. Place the box on a completely level surface and drop the ball to test whether it can run completely.

Then, use two screws to screw the box onto the mounting board. Screw the mounting board onto the existing light switch board. Next, slide the small tray onto the rod, and use the last 6-32 screw as a fixing screw to secure it in place.

Test your ball on the track again and adjust the angle of the track to make it completely level, ensuring that the ball can roll reliably in both directions. Tighten the screws to fix the position.

After all the tests are normal, apply a few drops of strong glue to the seams of the two track halves, stick them together, and remove the tape when it's dry.

Print settings

Printing brand:

MakerGear

Printers:

MakerGear M2

Raft:

None

Support:

None

Resolution:

0.2mm

Fill in:

20%

Consumables:Inland People's Liberation Army

Category: Interactive Art