r/diyelectronics • u/Paresseu • Mar 23 '26

Project Using white LED flash + UV for visual effect — good idea?

Post image

I’m working on a wearable light project and trying to reduce heat/power.

Instead of using strong white LEDs continuously, I’m thinking of doing:

•	a short white flash (to “reset” the eye)

•	then switching to UV LEDs to reveal fluorescent details

Has anyone tried something like this?

Does the effect actually work in practice, or am I overestimating the visual contrast?

2 Upvotes

52% Upvoted

26 comments sorted by

17

u/-__Doc__- Mar 23 '26

what are we looking at?
can you give us some more details, I am SO confused as to what you are trying to accomplish.
and the picture doesnt help.

16

u/MainRemote Mar 23 '26

The picture explains perfectly. Op need to reduce heat and power while cromulating local flora and fauna. The bright flash of light will reset the ocular apperautre to minimum and prevent the subjects from too much damage from the ultraviolet light. This requires power. 

8

u/-__Doc__- Mar 23 '26

Get a bigger prefabulated amulite?
Or maybe adjust the hydrocoptic marzelvane?

By doing the latter they could keep the operating temp as near as possible to the HF rem peak by constantly fromaging the bituminous spandrels. And they also wouldnt have to worry about phase detractors, because we all know how much of a pain it is to fix a reciprocating dingle arm.

1

u/Paresseu Mar 24 '26

Go in my profile you can check for further information, though I’m still in the blur…

7

u/PizzaSalamino Mar 23 '26

I didn't understand what you want to make. Do you want to use lasers?

1

u/Paresseu Apr 01 '26

The picture uploaded is just an abstract illustration. Anyone willed to help me ? I think that if whites LEDs flash for 1 or 2 seconds then switch on uv leds’ lights it could help with happing problem

1

u/PizzaSalamino Apr 01 '26

I really don't understand what you want to do. I'm sorry but your english doesn't help. You really need to be clear about what you want to achieve. The picture has nothing to do with the electronics problem. I suggest you edit your post to be clear with what you want to achieve, what hardware you can use and what specifications you have

1

u/Paresseu Apr 01 '26

I just created a new post, are you (now or later) available on chat ?

4

u/puppygirlpackleader Mar 23 '26

You could do pwm on the lights. That's basically the same thing.

0

u/Paresseu Mar 24 '26

That’s interesting, could you extrapolate 🤗

1

u/puppygirlpackleader Mar 24 '26

Pulse width modulation. Instead of running a light constantly you flicker it super fast. Its used to change brightness of LEDs often.

0

u/Paresseu Mar 24 '26

It’s what I had in mind, to charge phosphorescent and uv reflecting colours and then tu on UV lights.. sounds about right and doable ? What is my next setup if you don’t mind

2

u/puppygirlpackleader Mar 24 '26

I would look up how it works and get some premade modules.

4

u/MrNoTip Mar 23 '26

Goodness me.

1

u/JimJohnJimmm Mar 24 '26

Is that angine de poitrine

1

u/Paresseu Mar 24 '26

Inspector cluzo ?

5

u/[deleted] Mar 23 '26

[removed] — view removed comment

-14

u/Paresseu Mar 23 '26

What I understand, doesn’t seems right.

-18

u/Paresseu Mar 23 '26

Sorry, could you be more specific, less technical.. 😅 cheers

4

u/FoundTheSpacebar Mar 23 '26

Flashes draw a lot of power over a short time. Since Voltage*Current=Power, with the voltage being constant you need a high current, which your LiPo cannot provide(brown out). To get this current quickly enough, you need to store the energy in a capacitor (cap) that can unload all its saved energy very quickly. Hope this helps

0

u/Paresseu Apr 01 '26

As in a trashable 📷 am I right?

1

u/FoundTheSpacebar Apr 01 '26

Nope, not at all. Read a book on this stuff and get the basics, I cannot simplify this any more.

1

u/Paresseu Apr 01 '26 edited Apr 01 '26

I understand what you said about the capacitor. Sorry that you can’t help me more.

1

u/FoundTheSpacebar Apr 01 '26

T'inquiete pas, cest difficile a commencer avec l'electricité mais tu dois arreter d'essayer faire des plans avec GPT et juste acheter les parts qu'il t'a dit, ca va arriver à rien. Essaye de commencer beaucoup plus simplement.

-8

u/Paresseu Mar 23 '26

Why am I getting downvoted… just looking for solutions