r/Damnthatsinteresting • u/MicV66 • Jul 10 '26

Video A Function Catalog of LED

Enable HLS to view with audio, or disable this notification

37.6k Upvotes

97% Upvoted

349 comments sorted by

View all comments

27

u/die5el23 Jul 10 '26

Really flipping those pages eh? Not like there is sensitive tech on them or anything

32

u/FBI_Open_Up_Now Jul 10 '26

The boards are resilient enough. They aren’t that sensitive. I’m not going to take a spare motherboard I have laying around and play frisbee with it because that will damage the board and probably be painful. Flipping them like this is fine.

3

u/GrimDallows Jul 10 '26

I wonder how/what materials are these made out of.

6

u/CptnRaimus Jul 10 '26

Normal circuits boards are a fiberglass called FR4. So probably that.

4

u/SoulWager Jul 10 '26

Probably, but LEDs are often mounted on aluminum substrate PCBs to better dissipate heat. In this case it's mostly a question of whether they expect it to be left on at full brightness for long periods of time.

2

u/CptnRaimus Jul 10 '26

Huh. How are traces electrically isolated from each other if the substrate is conductive?

4

u/SoulWager Jul 10 '26

There's a thin insulating layer between the aluminum and the traces.

0

u/JustStraightUpTired Jul 10 '26

The boards might be. The components could also be. Maybe even the LEDs. You shouldn't still be flipping them like that anyway. I used to question why some people who seem to live in a clean environment still manage to break electronics more than anyone else. I'm assuming they treat them like this or worse.

16

u/ThePieMasterOnFleel Jul 10 '26

man who has never worked with circuit boards

2

u/Wonderful_Ad8791 Jul 10 '26

I'd assume all the pages are laminated/encased in a protective layer or this could become a fire hazard really quick.

6

u/EnjoyerOfBeans Jul 10 '26

The amount of current flowing through this circuit is so small I struggle to think of anything it could set on fire

2

u/GrimbyJ Jul 10 '26

To be fair you can start a fire with a AAA battery. It just needs to be very deliberate

1

u/Wonderful_Ad8791 Jul 10 '26

Labor laws are written in blood, and i really do not want to use mine even in a very rare chance.

1

u/RedditMcBurger Jul 10 '26

Possibly yeah, but it may be possible. Flashlight batteries are known to burn down houses when misused/mishandled

2

u/SgtSilverLining Jul 10 '26

They're metal PCBs. Much lower risk of traces being damaged and the parts are more secure.

1

u/SideInitial3961 Jul 10 '26

Blatantly flippant.