This a (mini) mechanical shadow-theatre that recreates a lava lamp, but using only lights and shadows !
The blobs of lights are slowly moving up across the paper screen, appearing, changing shape, merging... It is strangely mesmerizing.
I made a short video to explain the design process: https://youtu.be/eRqHICl7BTc
I have written some fairly detailled building instructions on Instructables:
https://www.instructables.com/id/Shadow-Puppet-Lava-Lamp
List of Ingredients
You will need a few extra components (affiliate links):
- an Ikea Jansjö USB Led light: https://www.amazon.com/Ikea-LED-USB-Lamp-Black/dp/B00R8H6VTM/ref=as_li_ss_tl?crid=353IHKNWQBY32&dchild=1&keywords=ikea+jansjo+led&qid=1600956378&refinements=p_85:2470955011&refresh=1&rnid=2470954011&rps=1&sprefix=ikea+jans,aps,212&sr=8-24&linkCode=sl1&tag=mojoptix-20&linkId=bc37b6f61b51987077378156df301fb8&language=en_US
- a (silent) clock movement, with the minutes hand: https://www.amazon.com/Ikea-LED-USB-Lamp-Black/dp/B00R8H6VTM/ref=as_li_ss_tl?crid=353IHKNWQBY32&dchild=1&keywords=ikea+jansjo+led&qid=1600956378&refinements=p_85:2470955011&refresh=1&rnid=2470954011&rps=1&sprefix=ikea+jans,aps,212&sr=8-24&linkCode=sl1&tag=mojoptix-20&linkId=bc37b6f61b51987077378156df301fb8&language=en_US
- 2x ball bearings 688-2RS: https://www.amazon.com/Ikea-LED-USB-Lamp-Black/dp/B00R8H6VTM/ref=as_li_ss_tl?crid=353IHKNWQBY32&dchild=1&keywords=ikea+jansjo+led&qid=1600956378&refinements=p_85:2470955011&refresh=1&rnid=2470954011&rps=1&sprefix=ikea+jans,aps,212&sr=8-24&linkCode=sl1&tag=mojoptix-20&linkId=bc37b6f61b51987077378156df301fb8&language=en_US
- 5x M4 screws, 60mm long
- 2x M4 screws, 40mm long
- 2x M4 screws, 30mm long
- 1x M4 screw, 15mm long
- 4x M4 nuts
- 6x M4 wingnuts (can be replaced by regular M4 nuts)
3D printing
It should take about 24 hours and 150 grams of filament to 3D print everything.
Mojoptix
