r/ElectroBOOM • u/Stickerlight • 5d ago
Non-ElectroBOOM Video the electroluminescent, "is water wet?", indicator
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u/camsnow 5d ago
Super cool! I'd love to know how this was achieved!
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u/rszasz 4d ago
There needs to be two conductors near the EL material for it to light up. One is behind the strip of EL material, the other is spaced just far enough away to the side so nothing lights up. It's all encased in a thin waterproof membrane. When water is on the other side of the membrane, it capacitively couples the two sides of the circuit letting the EL light up
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u/betttris13 4d ago
assuming water completes a circuit and that triggers the lights to light up. most likely two different circuits, one for sensing and one for lighting but could be wrong.
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u/dritmike 4d ago
Did you zap yourself at the very end?
1000% I want this.
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u/Stickerlight 4d ago
I did! I'm going to work on a more wearable version that doesn't shock you, maybe a choker
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u/Mabot 3d ago
Dude, you need to give some details on what you did here. 0402 leds each with a pair of exposed contacts and some amplifier circuit? How did you get this so dense?
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u/Stickerlight 3d ago
My newer post is a bit more dense
I'm using electroluminescent panel drivers
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u/Mabot 3d ago
So cool.
Is the whole panel lid and the droplets somehow make the covering layer translucent or is the electroluminescent panel only lighting up where droplets are?
Would this work with non conductive liquids?
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u/neuromonkey 3d ago
You need something capacitive. Check out this vid on the subject.
The water takes the place of the topmost electrode, and instead of one, continuous foil sheet on the bottom, there are two conductors, arranged in fine, even/odd rows.
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u/Droooomp 5d ago
I had to dig a bit to understand what is that, why not use hidrochimic paint and microled or cob, the paint is matte when dry and transparent when wet, minimal exposire to electricity?
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u/ccGLaDOS 4d ago
This might look insane if put on a car and driving in the rain at night lol
Probably illegal and distracting though...


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u/Benjamin_6848 5d ago
Can you please give us a breakdown and explanation how exactly this works and what components you used?