No kidding! you can totally DIY them still but I feel like a LED + a CdS + a transistor + heat shrink would be more expensive too!

@@SimpleElectronics Today, absolutely it would cost more, and wouldn't work as well. Kids these days have it easy!

@@pileofstuff I dunno if they really do. I for one, well I'm not a kid, but also couldn't wrap my head around the idea of a led and photo resistor being inside a tiny chip acting as a switch. Whenever I looked at datasheets and what not trying to figure it out I kept coming to the conclusion that one had to hook an LED up to it for it to work. I knew that didn't sound right either, so I did some digging and found pictures of a optocoupler cut in half and it clicked that it was possible. Seeing things as they are, not manufactured to the size of a fingernail. Do you think kids these days have any idea what transistors do? How they work? How they made computers possible? How they are put in patterns and designs which allow them to perform logic and math? How that equates to memory, ram, basically how does a computer actually work, at the most base level. I used to fix computers all through school, but didn't keep it up once I graduated from university. This was 19 years ago and I just recently, this year, learned how transistors work and all that other stuff. If things were bigger, more tangible, it would have made learning it easier and something that may have happened years ago instead of recently m

@Nate Higgers I make quite a few interfaces for my old 8 bit computers, if anything goes wrong with what I've plugged in, at least the computer is protected. I would cost a fortune to repair a 1981 Panasonic JR-100 in the UK.

Thanks for watching!

Thank you so much for the kind words!

Thank you!

5Kv is nothing to shake a fist at! Thanks for the support!

Thank you!

Sweet! Do you have any cool project ideas?

Thank you sir!

Thanks! I appreciate the comment!

Thank you very much!

Wow I'm honored to be in the same sentence as Great Scott!

I'm really glad you liked it!

Thank you, I am happy it was helpful!

Yeah I think I either got 50 or 100 for dirt cheap

Not sure what you mean by TV and unit, but if it is defective it will not turn on!

it does not, I tried :(

@@SimpleElectronics ok too bad :/

Yes sir, polarity is important because it's a transistor and a LED - both polarized devices

No dumb questions. If the same power supply is used, no air gap can exist unless you have isolated transformers. In normal use, both sides would have independent power supplies.

Well there is a transistor inside which is more or less directional.

Not directly, but you would use this to trigger a more powerful MOSFET to turn them on - these are used to isolate both sides of the circuit from each other.

You know, I don't think that's too difficult to do, I don't have any ws2812b strips on hand but I will keep it in mind

@@SimpleElectronics thanks man keep it up!

I have nothing with the IR filter removed

Optocouplers are really only good for a few hundred milliamps, relays can drive a few hundred amps in some cases! Horses for courses

Thank you, that is indeed a limiting factor. But can't the optocoupler then switch a thyristor? It would still be seperated from the initial switching circuit, but drives way higher loads. This should still be able to compete with relais very well.

Take it one step at a time! I'm not THAT great at it either, but we're all learning together!

I skipped around and couldn't find where I made the mistake, can you timestamp it please?

Simple Electronics look at your drawings. The two arrows between led symbol point towards positive side of led. I think.

oh you mean the arrows depicting the light transmission? I didn't think there was a direction to that!

@@SimpleElectronics I'm not an expert, but all the schematics i have seen have the arrows pointed towards the ground side. But i'm not sure. Keep up the good videos btw :)

I see 3 and 4 are reversed, oops!

It happens to me all the time.