Inspired by the famous lava lamp, [Mojoptix] wanted to build a creation of his own with a similarly organic, changing lighting effect. However, rather than flowing heated wax, he created a lamp with pseudo-random effects his own way.
The lamp itself is built around a shadow-puppet concept, using a pair of rotating apetures that [Mojoptix] 3D printed. The apetures turn, one in front of the other, and are lit from behind by an IKEA LED light. As the apetures rotate, they present a slowly varying path for the light from the LED, which is projected onto a paper screen placed in in front of the assembly. To generate the long-period rotation, the rotating assembly is turned by the minute hand of a common clock movement. It’s a great way to get a slow-rotating motor and gearbox setup on the cheap, as long as your torque requirements are absolutely miniscule.
It’s a neat way to produce a slowly-varying lighting effect; we’ve featured other discussions on the topic before, too. Video after the break.
9 thoughts on “Shadow Lamp Moves Delibrately Slowly”
I’ve done something similar with dark laser printed transparency film- lighter than 3d printing.
I would *love* to have a dark laser printer!
Or x-ray film.
It reminded me of a cucoloris.
Very 1960s star trek vibe
My mind to your mind, I was thinking exactly the same thing.
I was thinking the exact same thing as well the computer that Gary seven used but change the white led to a multy colored varying one and you’d really have something special
(sp: deliberately, unless I missed a pun somewhere…)
Chinese shadow puppets have been around awhile, planetarium projectors, 3 rotating film Drum aurora borealis projectors. All are examples of Brute force projectors. a small point light source works like a lens. Colored film, Lighting Gels & Diffusion
You can make all sorts of fun. Put another layer of bits of colored gels on a 3rd disk. It will make it much more random.
Your Brute force projector looks like fun project.
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