Testing the world's biggest LED

The world's brightest LED is SO POWERFUL that just powering it on is a challenge in itself! Also, the first 1000 people to use this link will get a 2 month free trial of Skillshare Premium
Membership: skl.sh/diyperks2
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Here's the LED in question: store.yujiintl.com/products/y...
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[@DIYPerks]

FAQ Time! But first, don't forget that after your first two months of free Skillshare trial goodness it's LESS than $10 per month if you go with an annual plan, which is like a good cup of coffee per week but instead you're building on your lifelong knowledge. Enjoy! skl.sh/diyperks2 Now, question and answer time! The first think I'll say is that there's been a surprising spread of discussion about various aspects of this build in the comments. It's great to see! I actually learn a lot from reading comments that you guys leave, and there are some serious golden nuggets of info here and there which I appreciate a lot for building on my own knowledge. I will first address a few common misunderstandings though. Firstly, some folk are assuming that the LED is 90%+ efficient, which would mean that it would only output 150w as heat and the rest as light. This isn't the case unfortunately, as even some of the best LEDs are only 40% efficient MAXIMUM. This figure changes depending on the colour accuracy, with more colour accurate LEDs being less efficient as they have to emit more of the visible spectrum. Let's assume the LED is roughly 30% efficient (which is probably fairly accurate, and may even be a bit generous) that means that 450w is being emitted as light, and the other 1050w is being wasted as heat. So, I built my cooling system around the assumption of needing to dump 1000w of heat into the air, which is why I had four large radiators and made an extreme cooling block for it. LEDs last longer when they're cooler, so it's super important. I also want the final unit to run quietly, not with maximum fan speed, so this extra headroom allows me to do that. Another thing that crops up is talk of corrosion. In water loops it's very important to use similar metals, otherwise you run in to galvanic corrosion where one metal will literally steal electrons from the other, causing the other one to corrode quickly as they're 'connected through the water'. Brass and copper are similar enough, but the lead in the solder may be susceptible to corrosion. However, adding an anti-corrosive additive to the liquid should solve this in the final build. The radiators are copper, not aluminium, so no worries there. As for the PSU's failing... there have been many theories but nothing solid. They are 12v PSUs, and are rated for 83A on that lane. When in series, they give 24v at 83A... 83*24=1992w. The reason for my wanting a higher voltage is that it literally halves the amps on the voltage booster, meaning they can run easily rather than at their absolute maximum ratings. Hit me up with any more questions! Anyway, I hope that clears things up. If you still see these questions popping up please relay the answers contained here for me please :)

[@KennyPhases]

Where do you write your ideas down? How do you come up with your ideas for your videos? I always strive to find new ways to stay creative and keep the ideas generating! Cheers!

[@DIYPerks]

@@KennyPhases I use Google Keep on my phone to jot down my ideas. Usually I get inspired from a train of thought or from talking to others.

[@KatouMegumiosu]

Can you cook an egg with it in the next video?

[@LordAnubis0909]

Your power was off. Psu have fix power outpot. For eg. 12v at 83A that comes to 996W per unit. In series you get 24v but only half of the amps. (996/24V). If you had them in paralel mode you could combine there output power. I presume that booster need at least 6-36V input to work and that psu units are around 1000w.

[@Craig_Anderson]

If you're not aware, computer PSUs have an "80+" efficiency rating, where server PSU's are typically much more efficient than normal ATX desktop PSU's, however this is actually a curve, depending on loading, with maximum efficiency at around 60% load, which drops off significantly towards their maximum rating. It could be that at their limits, the cooling was not adequate to remove all the excess heat and the least efficient component failed.

[@DamienAlexander]

These are standard in BMW's headlights when they drive behind you.

[@leanmeangreenbeanmachine3347]

At least they’re not Audi’s fucking laser headlights

[@brandonthegrey]

Xenon headlights are the goddamn worst.

[@murderdoggg]

Yeah I was thinking Audi, but pimped out 3 series for sure.

[@dsloop3907]

Yes, I am designing a light tracking guided mini missle, just for those.

[@rakbar6509]

@@dsloop3907 hey! Let me know about the results ! I'm interested about your project

[@EpicSheepReloaded]

I'm more impressed by the dynamic range of your camera than by the led

[@swilbs]

*than

[@mike_oe]

me too

[@XY-ep8uz]

sony maybe?

[@kamikamieu]

This guy is simply the best DIY channel. So original and well made fkin quality contents

[@itsanewday5219]

Me too

[@dr.apollo4226]

911 what’s your emergency? My neighbor is trying to recreate the Big Bang in his attic

[@ankitbhalodiya637]

I guess in UK it's 999

[@dontreadmyusername6787]

Judging from the thumb nail i first saw a cup of tea worth $1000...

[@zeroomens9438]

what an original way to tell everyone that you don't understand the Big Bang at all.

[@dr.apollo4226]

@@zeroomens9438 what an original way to tell everyone what a stiff neck you are.

[@groadybones]

"Lighting and LED enthusiast" My brain: "moth man"

[@Sahil99413]

Lol

[@NickiRusin]

thanks for the chuckle man

[@elmowilcox]

Lmfao

[@HoorGuvLabs]

Moth man? Styropyro

[@Mart-E12]

LÄMP

[@MrSaemichlaus]

This dude constantly looks like he's heard a dirty joke before turning the camera on - and it's great!

[@wavegreen]

Best comment of 2020 haha

[@TangoIndiaMike144]

bro! haha

[@hellblaze8082]

Hey it (LED with its cooling contraption) kinda looks like the aliens camera tentical form WAR OF WORLDS

[@stevethea5250]

@@wavegreen and great blue 👁‍🗨 👁‍🗨 s

[@robinlandal6859]

We all get our nerdgasms

[@dudepersonvids]

"Hello, yes, police? I have reason to believe my neighbour is building an illegal arc reactor... yes like Iron Man, exactly"

[@nathanh8422]

Crap... Are arc reactors illegal???

[@josephjoe9088]

"Hello, yes, police? I have reason to believe my neighbor has some angel in his house.. yes like God said let there be light, exactly"

[@SebastianHaban]

"Houston? Yeah that strange light is back again! I can see it right there in England. Can you confirm there is no nuklear war going on down there? Yeah? What about an alien invasion? Now it's blinking! It's shining right against us. Ahhrgh I'm blind. Houston the aliens are attacking us." No seriously. I bet you can see this thing from space...

[@seanthegarbagecat1928]

"Hello? Hello? Damn they hung up."

[@milathecat5454]

Owning a self sustained fusion reactor isnt illegal, thats what powers his suit

[@jek__]

As Abraham Lincoln once said: "If I had 10 minutes to power an LED I'd spend the first 8 cooling it"

[@ChemEDan]

LMAO

[@xPandaProz]

I was looking for LED light for my bicycle

[@derfurst2809]

yeah, that one should work out... at least if you would like to brighten up your neighbourhood while driving through the streets :D

[@matf8436]

I think you'll need a motorcycle to bring for you all the equipments necessary for running this led😂🤦🏻‍♂️

[@marn200]

Flash? is that you?

[@jftanukich.3981]

Yeah that would be a nice flood light for night rides although you need to bring a lot of equipment even if your just using 1 strip to power the LED

[@johnhricko8212]

I built an LED 12 V for my bike light. Mounted it on a tomato paste can... I definitely need to learn more about lenses...

[@dragonbreak3360]

Poor vampires... Sun is no longer their only problem...

[@lovecastle7154]

Van Helsing would have a field day

[@fishsauce2221]

Technically it is the UV that is deadly and that LED light doesnt produce and UV.

[@johntheux9238]

@@fishsauce2221 And? Vampires first weakness is the heat produced, not the cancer so white light should works just fine.

[@kazimir8086]

@@johntheux9238 You have to look up for the photo-electric-effect. UV is much more powerful than IR, red, green, or blue light. Never heard of that Vampires dislike heat or temperature in general. Pure light was also never an issue. UV-C literally burns you.

[@tlotlisomoletsane3598]

@@fishsauce2221 have you ever been a vampire or seen one?😑

[@ianthefifth7790]

"I need to cool it, and I can't use a fan cooler." *Linus Tech Tips would like to know your location*

[@R4ZRHunterOwner]

Ian the Fifth this is so true lol pretty sure he recently said that the newer air coolers are as the same as liquid coolers.

[@Scorch-qy6by]

@@R4ZRHunterOwner from what I remember he said that aios we're about the same.

[@nabilhero8746]

Cairo, Egypt.

[@omargt738]

@@nabilhero8746 انت عاوز ايه ؟

[@thefatorc6822]

@@nabilhero8746 مش مكانك انت

[@lolcraft_ita]

I think discord's light theme is much bighter than that LED

[@asaultikk]

Did you find out the hard way? F

[@josuesolano647]

@@asaultikk Someone is writing this for me, because that made me blind :(

[@arlynnecumberbatch1056]

you all have weak eyes for not adjusting brightness with you cornea

[@evan-sk8xb]

Lol guarda chi c'è sono evanthehusky

[@lolcraft_ita]

@@evan-sk8xb ma sciao :3

[@sushantmanandhar1387]

"Even an air cooler this size can only handle one fifth of the heat" Water cooler: is the size of a small country

[@crawlerin]

"So I'm gonna have to up the ante and use watercooling." Linus: "... go on ..."

[@zachm8437]

that was my first thought too! Janky A/C Watercooling forever!

[@Jedi-Nite]

Same

[@oinngmr3177]

LTT: “So we watercooled a lawyer to take on DIY Perks for stealing our thing!”

[@StaticNebula26]

Water cooled RGB

[@mxlion]

Linus: RGB?

[@xingadora6918]

This guy is basically a safer electroboom

[@sujalsharma7895]

OwO UwU exactly lmaoo

[@sujalsharma7895]

Noah Leitch ayee y’all know my fav youtubers ♡

[@darewin3847]

Hahaha very true

[@komalmishra5451]

😂 😂 😂

[@bogdanm251]

because he powered up an LED? electroboom is on a whole other level

[@Voldsgaard66]

Fun Fact: Electricity actually runs on smoke - if the smoke escapes, the electricity stops working

[@anakinskymonke3670]

I kinda lost brain cells. Can you explain a bit more?

[@josphe9011]

@@anakinskymonke3670 your not a electrician are you? Basically electricity is smoke if it escapes electricity has a hard time flowing and may even stop working, its called the magic smoke

[@josphe9011]

@@anakinskymonke3670 aside from the joke, its when electrical arts form and burn causing smoke to be released.Pretty much your stuff has died and its burning inside.

[@anakinskymonke3670]

@@josphe9011 Basic common sense would tell you that a normal person won't ask a question relating to electricity if that person isn't an electrician. OF COURSE I'M NOT AN ELECTRICIAN.

[@anakinskymonke3670]

That's why I requested a more elaborate explanation. Which you solemnly did for me. Thank you!

[@kipling1957]

I’m always amazed these COBs don’t rip themselves apart with the thermal expansion changes of substrate vs. semiconductor. A lot of material science must have gone into their R&D!

[@Silkroadgermany2]

Would you mind explaining that? It sounds very interesting!

[@kipling1957]

@@Silkroadgermany2 Simply as stated. When materials heat up they often expand differentially. If bound together this can cause stress often leading to fractures in either material. COBs are a layered structure of semiconductor and various mounting substrates that get very hot, so a prime candidate for physical failure if not implemented correctly. I hope that helps.

[@Sim_Tiby]

@@kipling1957 the substrat is a ceramic material.

[@SquishyThing]

​@@kipling1957They use ceramic and gold wire which can handle a lot of current without heating up. The gold wire is less then 0.002mm and can easily handle 5+A

[@compwiz00]

I've got a few 10w ceramic cobs made by Cree which fell off their heatsink and kept running for a few minutes and did not fail from thermal expansion. The phosphor cracked and it got slightly less efficient than its peers, but it still works just fine, every single die.

[@transparent91]

This is filmed so smoothly and professionally I feel like I'm watching advanced children's TV just for adults

[@bmthfan1231]

kinda perhaps like, advanced adult TV or something?

[@Not_mera]

I feel like I'm watching Mr maker but the producers trust me with a soldering iron

[@2KOOLURATOOLGaming]

Feels like "How it's made" but more personal

[@railgap]

4.2M subs and multiple ads and this surprises you? This is like the home shopping channel on cable TV, resurrected and with the serial numbers filed off... there are boatloads of better options.

[@user-ru7ux1qy8e]

The only man I've ever seen wearing 2 pairs of sunglasses, unironically.

[@prat751]

ehem.. styropyro

[@znefas]

@@prat751 don't think I've ever seen styropyro wear two pairs of protective glasses at once

[@maxstacherl3227]

I've done a lot on my projects, but I've eventually replaced them with a singlr pair with reflective tape, so basically diy welding goggles

[@dwagahnuwu2951]

@@prat751 formerly .. styrofoam indeed

[@vinyredx9220]

Well... Markiplier kinda did it the same thing, but he was more masochist, he put sunglasses and put right into his eyes

[@ProfMannion]

I like how the two types of your videos on this channel are: Make a $4000 4K projector for $300 Make a $2000 flashlight

[@moritzmichaelis6147]

The server psu has been designed with a metric ton of static airflow through the server chassis, therefore i recommend you switch that up. It might not holdup all to well otherwise.

[@kobart1101]

"I don't know why these failed" He says with a frying pan over the lamp :D I really enjoy watching you come up with these crazy and non-relatable builds! Keep em coming

[@drjoe71]

He was trying to cook something.

[@Wtfinc]

Non relatable? or u mean to say, un affordable. Cause I would do this all day. But I'm broke, comparativly speaking.

[@BenCzech]

Nice LED! I worked at an LED company that designed high end bright LEDs for marine applications. We ran into the same power supply problem when we used 2 big 1k watt power supplies in series. The solution turned out to be purchasing power supplies that support 'load balancing'. That way one power supply never gets briefly slammed with the whole load.

[@AntonioTorres-eh6yv]

He is about to have the highest electricity bill in the world.

[@martin518441]

not really 1.5kw is like a standard small space heater

[@World_Theory]

The whole time I'm watching this, I trying to think of what kind of task it's designed for. The best I could come up with is "stadium light". So I was like "Oooh!", when you said it was for stage lighting. Some of my sillier ideas, was for holding a beach party at night, a tanning booth, and a full sized easy bake oven. (For when you want to allow your kids to be able to cook a full sized thanksgiving turkey with a lightbulb powered toy oven.)

[@superdau]

From the manufacturer's website: Application: Solar Simulator Lighting

[@diophantine1598]

superdau So that’s why it gets so hot... it’s emitting light at similar wavelengths as the sun.

[@Invictus173]

@@diophantine1598 that would be very deadly if it did radiate the same wavelengths..

[@PauloSantanaPlus]

He's growing weed 4sure

[@luna010]

@Nathan Eaves I don’t think the wavelength affects the heat, also the sun pits out pretty much all wavelengths.

[@manipulativer]

@@diophantine1598 led diodes can not match suns output but pulsate certain spectra and those pulsations are almost like laser pulses. So an led light is unhealthy in comparison to the sun

[@gtfgoogleface]

Even when he's disappointed, he's still smiling.

[@some1and297]

Well at least it's just the power supply not the led

[@Slap_Ninja]

That right there is a true man

[@billyhutson]

oh yeah yeah

[@gklkjuhylpoiuyuiojhjklkjuh9976]

He is totally fake and gay.

[@watchthesefools]

@@gklkjuhylpoiuyuiojhjklkjuh9976 don't think he's gay he's really into LEDs

[@michaeloberb2120]

To get double the Current, you need to parallel the power supplies. Wiring them in series gives you double the voltage. You might have stressed the current limitations of you power supplies.

[@AlanRencher]

Yes, this is what I came here to say. Really, he need four PSUs: two in series for the voltage, and then those in parallel for the wattage. Then the boosters inefficiency has to be taken into account, which is usually 80% or so.

[@paulgrimshaw6301]

He wants double the voltage, not the current. These supplies when run on 240V (he's in the UK) can output 82A on the 12V rail. Put two in series and you get 82A at 24V. Even if the converters were only 80% efficient this would be (just) adequate. Instead I think the issue is that he's only taking the 12V output from one side of the 12V pads on the PSU interface circuit board. You have to connect to both sides to get the rated amperage.

[@AlanRencher]

@@paulgrimshaw6301 If the amps stayed the same, then you would be doubling your wattage. If these are 1000W power supplies, they stay 1000W when put is series. If you had 82A at 24V, you would have 2,000W (again, these are 1,000W). Instead, you would have 41.67A before taking the 80% efficiency into account from the boosters. Remember to use Ohm's law when calculating these things.

[@TooBarFoo]

He doubled the voltage on the output of the second power supply in the line while still drawing the full amp load, this is way out of spec. If you want to run them in serries you can only pull half the rated wattage. He needed 4 power supplies, two sets of 2 power supplies in series linked in parallel in order to stay in spec at the component level for the second in line PSU. Thinking you could run double the rated wattage thought the output of the second PSU was naïve in the extreme. Those must have been good quality server PSUs to have managed to perform so far over spec for the first run.

[@AlanRencher]

@@TooBarFoo You are correct, except I think you mean that you can pull only half the rated amperage, not wattage. The wattage stays the same.

[@bobzerok]

Thanks for the video. It was fun to see lots of overkill parts together. Here at home we enjoy your builds. Please continue the good work.

[@astone_ua]

"I was just trying it out again before taking it outside" Has a frying pan set up on top of the LED on the background.

[@velocityfpv5231]

LMAOOOO i did not see that

[@CJ-hw4zc]

Yeah man I saw that too 😂

[@7hristos]

haha he wanted to frie an egg

[@bloomy11]

u ready for bicycle day?

[@bobbyflay4104]

I didn't notice hahahaha

[@mimireich]

DIY Perks: *water cooling the strongest LED* LTT, behind the camera just staring at their water cooled Red camera: *heavy breathing*

[@MrMaxxxx000]

LTT did a watercooled Red camera

[@mimireich]

@@MrMaxxxx000 it is. 8K was the biggie of their water cooled arsenal.

[@Sx107music]

LTT actually have the resources to cool this LED much better and much neater. Until Linus drops the finished project box

[@GLR.VISUALS]

@@Sx107music underrated comment right here

[@fuguthefish]

LTTstore.com

[@brianbrewster6532]

As a designer of custom COB LED Light Panels I hope to sell soon, I appreciate the same exact challenges (although not quite at the scale you're on) in learning to power and cool your LED creation. Only working with a 3-watt 10V COB, the very first time I finished soldering wires to this postage-size beast, when I powered it up - UGH - I thought I'd go blind. I wasn't quite expecting so much light intensity from such a tiny source. For the next 20 minutes, I kept seeing dark spots before my eyes akin to staring at the sun too long. I cannot fathom a 1000-watt light so BE CAREFUL!

[@sasdagreat8052]

How's the panels coming along? Sure hope you didn't look into your artificial sun again...

[@cjchavez19]

Watching this on my phone knowing my phone can't get bright enough to really hurt my eyes, I still find myself reflexively shielding my eyes

[@mikimomo97]

From someone who works in a data center: Server PSUs never run in series. They run in n+1 redundancy. So they aren’t very good at working together at the same time. They also get a good bit of cooling from the fans within a server chassis as well as their own so it was probably inadequate cooling. They also never push their full wattage capacity for extended periods of time or reach their full capacity ever really.

[@jrcarlsen]

I am not familiar with this PSU, but some are split into multiple rails of 12v and 5v, with each rail possibly having a lower amp rating. This looks like a Supermicro PSU and looking up the specs on a few different models, they only list a single rail. Here an example: www.serverschmiede.com/images/product_images/thumbnail/supermicro-1000w-psu-netzteil-pws-1k02a-1r-9994-m-2.jpg

[@SuperBrainAK]

yea, could the fans only be there for when the server is in standby mode and the server fans are off? then when the server is on and there is already a few mm of H2O of pressure supplied by the case pressure, then the fans it has are able to supply the full required airflow?

[@tyronenelson9124]

@@SuperBrainAK Possibly, i work on fan cooled inverters and psu's in this case the fans work depending upon the load along with temperature.

[@mikimomo97]

@@SuperBrainAK Doubt it. We have Supermicro devices (if they are, as Johnny pointed out), and the fans are on all the time. Servers are rarely in a standby state and when they are, fans still sit around 50-60% I'd say. It's hard to say the exact speed because we don't have access to case metrics since my job is mostly hardware replacements like sticks of ram, hard drives and PSUs. But the fans are definitely on all the time. I think this was just a case of them being pushed to full capacity. Even a consumer grade 750 watt PSU is not rated to hold 750 watts for an extended period of time so I can say that neither are server PSUs. Optimal range is approximately 80% capacity. These 1000W PSUs are probably meant to output 800W steady with a surge wattage of 1000 during startup. They certainly weren't designed to hold 1500W continuously.

[@SuperBrainAK]

mikimomo97 ah, you should be able to load the PSU to 100% because that is what it’s rating is, for PC building you always put a bit bigger PSU in do you get better efficiency but you can still run them at max power.

[@gabon4000]

14:43 That frying pan over the LED makes me think...

[@38911bytefree]

He was trying to break some record, ..... yep ... bye bye PSUs.

[@ayaangoraya360]

Your videos are the only ones I watch fully without skipping even a second. Your intros are also uniquely short, unlike most other videos.

[@AllToDevNull]

Using air based heatingsinks is slightly problematic. Very often your cooling water starts to accumulats "stuff" from the inside of the radiators and pipings. This can start to block the small fins and cause some channels not to get enough fluid throughput and cause localized overheating. Removing some of the fins should solve this. Check your lamp with a terminal camera for hotspots. (This effect takes month/years to manifest)

[@just-a-username]

Nobody: BMW drivers at night:

[@bokkenka]

@John -- I work for a County in Wisconsin and occassionally do work for the Sheriff Dept. I asked a Deputy once about the LED strobe lights on the cars. He said, "If you think driving by one stopped at an accident site is bad, try standing next to it for four hours."

[@dervpool]

This is so true

[@94PRCNT]

We loop the current from our blinkers to our headlights. More powerrrrr. Who needs blinkers anyway?

[@spedracer55]

if this aint the truth

[@muhammadthufailg]

But the high cc bmw

[@DerPapierfliegernarr]

I think the PSUs failed because of inrush currents, since converters ususally have a ton of inrush current. Turning them all on at once is a bad idea. (If you have done that) If you want some references, check out Great Scotts Video on inrush current and soft starters. If you want some help designing your own psu, let me know, I am a hobbyist who does a lot of high power stuff (no degree yet, but I am working on that).

[@frisosmit8920]

Do you need high energy power supplies to fly a paper airplane?

[@markoantesic4362]

I don't think so. Half way decent PSUs should have current limiting and soft start build in. If you look at a server board, it has a lot of capacitance distributed all over (CPU+GPU power management). The problem was probably connecting them in series. It would be better to go with 3 boost converters per PSU and get a 24 V PSU or use 3 PSU with 2 boost converts.

[@qps9380]

@@markoantesic4362 Just curious, how can putting those PSUs in series damage them?

[@19janiboy96]

Yeah he should have put some NTC or maybe an Inductor in series with every converter

[@mariotubelecce]

power supplies died because the total wattage is a sum of multiple rails(voltages), you got all the power from a single rail. Power rail limits should be printed on the power supply back

[@TheTechAdmin]

8:30 Those are VERY high quality booster boards, wow! I'm looking at every component on the board, and every piece is the best quality version of said piece.

[@taylorwells3706]

its only a matter of time til this dude builds a time machine

[@DianaProudmoore]

Using brass for the vintage feel~

[@hey24sheep]

"Custom water cool your own power supply" next project

[@tamaskovacs3034]

I thnink thermaltake has a watercooled psu. But it would be nice to see him doing that :D

[@hey24sheep]

@@tamaskovacs3034 yes, and then use that with this.

[@thomasweedon1463]

Water cooling a power supply would be extremely dangerous as power supply’s have large capacitors that if touched and the connectors bridge it could kill

[@joostwagelaar8837]

@@thomasweedon1463 non conductive thermal paste

[@hey24sheep]

@@thomasweedon1463 well, I am not an electrical engineer but they do exists in market. So I'm guessing it is possible to diy it too.

[@rhysdavies8947]

Friend: How do you heat your house? Gas? Oil? Coal?? Me: LED Friend: What?? Me: What!?

[@g60force]

Watt?

[@tom_dilley]

@@g60force Aaaaaahhhhhhhhhhaahaha 👏👏👏

[@certified-forklifter]

@@g60force xD

[@DerAykac]

@@g60force Hero of this section

[@qingdom]

ohm.... watt??

[@stargazer279]

being a retired electronic and software engineer, i must say that your projects are very well explained and right, well done!

[@ItsVasco3456]

We totally need a projector with this LED light :D

[@ckmoore101]

Output of LED movie projectors for theatres is even brighter than this

[@VexxedSR]

Make sure if you're doing water cooling to check if you're not mixing copper, brass or nickel plated copper parts with aluminium parts as this will cause much faster corrosion of the metals.

[@jasondennis6038]

I learned that the hard way with my first water-cooled pc. Never again.

[@patricktho6546]

It looked like Copper only.

[@kernelpanic615]

Aren't the radiators he used aluminum...crap

[@TheAceTroubleshooter]

I dont think this is going to be a very permanent setup...

[@Cephalon_Shade]

You can mix brass and copper without issues. Copper is in brass. Copper and aluminum mixing in a loop isn't a good idea unless you run anti-freeze (pre-mix or concentrate you mix with distilled water.)

[@pvppro5036]

Alternate Title: Man recreates sun in his living room

[@shivampokar]

😂

[@thegio3553]

Heh nice

[@abhisheksaha8526]

He did it

[@benshattock4945]

That’s a different video... 😂 😂

[@Yorie1234]

@@abhisheksaha8526 thrice

[@gaganbajwa2707]

You are awesome dude👍. All that so you could just light up the LED perfectly. Perfection 👍

[@pixelagent007]

Discord bright mode: ARE YOU CHALLENGING ME

[@Joxxum]

When you accidentally unlock your phone at night be like

[@subhraneelmazumder9079]

Underrated

[@infn]

@@subhraneelmazumder9079 Apparently never heard of dark mode

[@BiffBish]

Infn E I bet your fun at party’s

[@thoughts_empty]

Joonge! 😂

[@isaacsrandomvideos667]

Barrie Butsers yes

[@oscarascal]

Present it to the SlowMoGuys, they're looking for some bright lights in some of their shots

[@M4rcS4ubion]

If you watch their latest video with glitter, you can see they have a similar LED for that reason. I wonder how it compares. kzbin.info/www/bejne/eKW8fHeXotaiaKs

[@m.shahidur7]

I can not express how much I am impressed with the custom water block!

[@peterkvcstlk5329]

When I want to hear a good english vocalization, I come here and listen to this guy. Thanks mate! :)

[@zoobs555]

I think you missed something here. The total wattage of the power supplies you used is 2000W however that number is the combined load of 12v, 5v, and 3, Rails. As you are only using the 12v rail to power the LED. You need to use power supplies that have at least 1000w each on the 12v rails alone. I think this is the reason why your one failed. I hope this helps, best of luck!

[@ThatTaytoGuy]

Was just about to comment something similar to this. He would likely be better using using a transformer from a microwave or similar. Something that can push the wattage needed at a consistent level and use heavy duty resistors to lower the voltage. I think the cooling solution is over kill too.

[@zoobs555]

@@ThatTaytoGuy yeah the cooling solution was pointless. He could have done it with a single rad easily. I think he forgot that the water block he made is basically a mini radiator also lol.

[@Vidalburgos]

Upvoting so he sees it

[@fadingbeleifs]

On top of that he was using the older used power supplies, and as most people that mess with those things know, their power output degrades as they age.

[@murderdoggg]

Maybe the Amperage rating for the 12 V rails is printed on the power supplies. Maybe DIY Perks could calculate it, and give us an update.

[@alittlebitintellectual7361]

" Its Important o add a thin layer of thermal compund" "Continues to spread it as thick as Nutella"

[@jekanyika]

I was expecting this.

[@KunigasSuvirintojas]

@Miner2D *than

[@luna010]

That was pretty thin. He was scrapping it off.

[@owenw.7904]

I mean if you have seen threadripper aplication it makes sense

[@2010ngojo]

You call that thick?

[@kleinebre]

A phenomenal amount of light (from 10:00 in) and heat generated - ideal for those cold dark winter days.

[@Xt4209]

Seeing him make that heat sink makes me want to start building things out of copper and solder lol that shit did look good once polished up

[@ginofoogle6944]

Would have loved to see this thing light up a forrest or a lake.. some tangible real world testing basically..

[@VastHorizons71]

Hes gunna take that all outside how?

[@INoIFearIGaming]

This thing looks like it can light up an entire city on its own. lol

[@TomosAvis]

Part 2 mate...

[@fadingbeleifs]

I'd love to have this mounted in my car for idiots that have those gawd awful blue headlights, or can't turn off their high beams.

[@andrewstang-green3107]

Andrew -Lithium Ion Battery bank.

[@EpicWink]

"power supply fans are really starting to ramp up" *can still hear himself think* yeah, those server power supply fans haven't ramped up yet buddy: you can still hear yourself think

[@flowinsounds]

named a server "hms defiant" because those fans and an aircraft carrier shared a common noise level.

[@ArchieHalliwell]

@@flowinsounds it would probably be the noise of the server's fans on startup rather than the PSU fans

[@timorouw5555]

@@ArchieHalliwell that, and the fact that small fans make a lot more noise than larger ones. These PSU's have very small and fast fans so yeah

[@Kraaketaer]

Doesn't seem like he's quite familiar with server noise levels. Those PSUs are made for outputting a constant 24/7 full rated load, so of course the fans ramp early - but they really didn't sound like they were anywhere near maximum speed either.

[@TheMidnight366366]

@@Kraaketaer The fact that it was just the 24V rails he was using when the whole tandem build was rated at 1500W and the thing didn't explode immediately was impressive.

[@nedwelch1217]

Nice work! Apologies for not scrolling through all 5,000+ comments to see if anyone has suggested this application, but here's one I'd love to see: using this for a high-power stroboscope. Lower-power LED modules (eg 10W) great for this. I built one with 2X10W modules that gets regular use in my shop. Runs off a 20V DeWalt tool battery and provides very crisp 60 micro/second pulses. Only downside is that they're relatively dim, which limits the range of the scope and requires a relatively dark room. 1500 Watts would make you the new Doc Edgerton. How you switch that much current that quickly is way beyond my pay grade, but you seem up to the challenge. Hope you take it on!!

[@Y0seo]

This is such a lovely engineering moment. He puts tons of effort into designing the casing for heat dispersion and it is the power supply that forms the bottleneck.

[@MinecraftInfo2000]

*kinda disappointed it wasn’t tested outside at night*

[@danielpolyak1126]

not his problem

[@robomanrobo6777]

@@danielpolyak1126 Dont be the ass whole guy.

[@robomanrobo6777]

​@@danielpolyak1126 Woah ho ho. LOOK OUT! We got a real hard-core BAD ASS, on the LOOSE!

[@robomanrobo6777]

@@danielpolyak1126 Woah! You sure told him off. CONGRAT! NICE!

[@danielpolyak1126]

@@robomanrobo6777 wtf😂😂

[@xanderguldie]

Imagine someone walking in the room while this thing is on. One might think he's gone into the light

[@jaidheersirigineedi8110]

And his eyes will be damaged

[@TheNukedNacho]

Japanese People: *war flashbacks*

[@jaidheersirigineedi8110]

@@TheNukedNacho Hiroshima and Nagasaki

[@curcapsicum]

Just a couple minutes in, but a Threadripper AIO would have been large enough I bet, out of the box. Ah well.

[@abelnyamori]

This guy is just so genuine with his passion

[@sirboi]

Plot twist: DIY Perks actually did it and the light we're seeing outside is his new LED project!

[@osamabinlackin1556]

"i water cooled the sun"

[@sleeptyper]

Plot twist: Flat Earth artificial Sun confirmed.

[@0m3gA_o3]

You should make the plot twist worse

[@Zolaa0507]

This was funny to actually think about :D

[@questocanale]

When you do the outside test, you should also try it during the day, and OUTSHINE THE SUN!!

[@CottonInDerTube]

The sun will probably be like ""Fock that, im out"

[@professionalprocrastinator8103]

Should test that in another country. Sun's game's rather weak in the UK

[@DanielLCarrier]

I was curious and ran the numbers. The sun is about 21,000 times as luminous per unit area.

[@r0cketplumber]

@@DanielLCarrier True- at the surface of the sun it's about 65 MW/m2. But 150 million km away it's a mere 1350 W/m2 at the top of Earth's atmosphere.

[@questocanale]

@@professionalprocrastinator8103 Hahah, that's interesting then... It could work!!

[@ryanmalin]

I loved when you got to see all the fans on the back of the radiators! Its all the old PC fans of the past come back for one last hurrah.

[@peterw1534]

I'm surprised how bright it is really translated through video so well. Neat

[@DeafKingz]

The brightness from my phone at 3 a.m. 10:47

[@s41f1ty]

Ikr

[@Quimerateck]

The power of a thousand suns in the backlight of my screen!!

[@Jedi-Nite]

I thought it was going to burn into my screen lol

[@MihkelKukk]

Number six!

[@GalaxureIndustries]

No, that’s my IPad whenever I turn up the brightness to MAX

[@bondthefifth]

Other people in quarantine: Ugh, I missed the sun Him: *So I decided to build my own sunlight*

[@BenCos2018]

lmao

[@phranzio6372]

DIY perks in 2040 “ Today I’m gonna show you guys how to make a spaceship from simple materials you have at home”

[@shabbaz40]

Your videos are superb , and very informative

[@hairlesscoconut3110]

-Did it say when our vision would come back? -Box said two days. -Totally worth it.

[@kr1sp51]

That was such a good show.

[@vodkasour8385]

Haaa i miss MiM

[@brazgazz]

What show?

[@fhanum9716]

@@brazgazz the one with a kid named dewey and his brothers, ive seen the clip but dont know the shows name lol

[@SkoobySkeptic]

@@fhanum9716 Malcom In the Middle

[@asharak84]

Given there are 6 separate powerable sections you could easily run the PSUs in totally separate circuits, be it 2 or 3 sections per PSU.

[@JamilKhan-hk1wl]

That is a better solution i think

[@Viddiecent]

I don't think that would work though because even though they could even be attached to the same plug the neutral and earth's on the input side would be separate and could cause some issues with power stability. especially if he is using a multi rail power supply. still worth a try though? :)

[@frisosmit8920]

@@Viddiecent the led also works when only one of the circuits is powered as you can see in the video. I presume that a little instability can be handled by the led as well

[@oliverer3]

The reason he ran them in series was to get 24V

[@Ohio_etsu-masu]

Isn't that way LED on cars flicker on high speed shooting? To preserve longevity and power?

[@notsouninterested]

Any squatted truck driving behind anyone that isn't a semi truck:

[@HCG]

Please show us the outdoor test! Don’t forget about this project!

[@laureeeeeeeeeeeeeeen]

*hacks two server power supplies together* "It's within spec."

[@Ivan.Wright]

Ya as soon as he said he wired them in series I knew something was going to go wrong. Honestly surprised it worked for as long as it did

[@thundercamel]

It's pretty common for DIY ebike chargers to put power supplies in series, as long as their outputs are isolated.

[@38911bytefree]

@Rami Ghazzawi Why is that ?. I dont get it. They are isolated, independient PSUs

[@Vader294]

38911bytefree think about it. how can they be isolated when they are electrically connected?

[@TheBinarygenius]

​@@38911bytefree ​ When a power supply is listed as isolated, it is normally referring to input to output isolation. This isolation is typically achieved by the use of a transformer. A non-isolated power supply is generally using a type of chip conversion. When a multi-output power supply has isolation between the outputs, it means there is an electronic barrier between outputs and not tied to a common ground.

[@SomeDumbRandomUser]

750W *on the 12V-Rail!* - They have different specs for the different voltages. 1kW is definetely all together - so might be you overused the 12V-Rails. But there are definetely some PC-PSUs which can handle that

[@arminmere4247]

Im not an expert but I think the psu-s died because of too high inrush current. Maybe he should build something that turns the led sections on one at a time? Luv

[@tstek]

If you can power each section individually, and he separated the power from the power supply into 6 voltage boosters, why the hell did he combine 2 power supplies into one? Just don't modify it and run 3 off each, or get 3 power supplies and run 2 voltage boosters off each, for the headroom/because one rail isn't rated for the full 1k watts.

[@Masterchief11792]

These server power supplys only have one 12v rail, they look like HP DPS-800GB ones which can deliver 100A at 12v each when power from 200-240v mains. So this should be no problem

[@paulweston8184]

@@tstek I think it was for show. If you have it run off separate power supplies he can't have his money shot of the meter reading 1600 watts. "Look its running off of 1600 watts!" (excited Brit accent) "Says 800." But there's two of them!" (excited Brit accent) "oh. There's also 6 light strips. So technically your running 6 leds not one powered by two different sources." "What if I ran the power supplies in series! All same power!" (excited Brit accent) "sure, I guess."

[@kennmossman8701]

@@arminmere4247 LEDs don't have inrush current, however the sudden current draw may be more along your thinking....however that is also somewhat true for computers

[@Buehler1997]

you're like the prof who says "we'll work thru the break today but we'll finish early instead" and then overshoots by 10 minutes. interesting video tho 👍

[@Alexsintra]

wow... not in this life i will this tecnical! amazing video!

[@marcus3d]

"it's important to add a thin layer of thermal compound" *adds a very thick layer of thermal paste* 🤣

[@fish9468]

Nawww is not THAT thick

[@ahmedsamialper5960]

I looked for this comment.

[@ShantiL_]

Thermal paste, an eternal debate

[@blackoes]

@@ahmedsamialper5960 yes me too i knew it would be here

[@fishsauce2221]

Better too much then too little.

[@kimdotnet2110]

11:11 gotta say, i'm impressed with the camera's dynamic range and ability to actually capture the brightness of the light, and simultaneously expose its surroundings well enough to comfortable see.

[@krzysztofbaus1311]

A very interesting project! Bravo!

[@raytherrien2851]

Id love to see this outside for some testing... Good Job man...

[@PhilipPetrunak]

6:53 Dude, if you want to know if something is watertight, just check if it's airtight first. If you just block one end, and an adaptor to a standard bike pump on the other end, you can pumpit up with the bike pump and watch to see if the pressure gauge on the bike pump goes down. It it doesn't, it's water tight. If it does, crank the pressure and listen for leaks. Use some soapy water in a spray bottle to detect leaks by looking for bubbles when it does. It's a MUCH cleaner way of checking for water-tightness.

[@johndoe528]

even better, draw a vacuum and see if it holds it!

[@notsafefortorque9060]

@@johndoe528 but that could make it self-sealing as its compressing the leaks

[@LEO-xo9cz]

That would be more complicated in terms of fittings.

[@PhilipPetrunak]

​@@LEO-xo9cz It really wouldn't. You'd only need two extra fittings. 1. An end cap. 2. A 8MM to whatever side he was using adaptor. That's all. Easy peasy.

[@antonfomenko3894]

@@PhilipPetrunak but that's still two extra fittings. He did it without those extra fittings. So his way is simpler and cleaner

[@alskjflaksjdflakjdf]

A few things to check: - A PC power supply may be rated for 1000w, but typically cannot provide all of that on the 12v output. Verify the watts the power supply can output on the 12v rail. eg: 12v max 50amps is only 600w on the 12v rail. - A PC only starts running once the PWR_OK signal from the supply goes high. This lets the power supply stabilize before the PC starts drawing full current. You should start your dc converters via a relay connected to this signal, so they don't draw current too soon. - Consider starting the dc converters one after another. They have several large capacitors on each of them, which typically means they will draw heaps more current for a split second when starting up. Starting them sequentially will decrease the maximum load on the supply. If you have an oscilliscope you can measure the startup time. It might be on the order of milliseconds. - Not all power supplies can be stacked in series the way you have done due to the way they are designed. An unscientific way to test this is to hook an independent load to each supply and measure the current. Then tie the supplies together while having the same independent load on each. If the current draw from the wall changes, the supplies cannot handle it. It is not guaranteed safe, but is a good first test. Given that your setup was only drawing 1600 watts it seems like these supplies were working okay in this configuration.

[@SuperBrainAK]

These are server power supplies, they only have 2 power rails, 12v and 3.3v for only standby use. So its entire rated power is available on the 12v rail. And yes how you wire things in series needs to be looked at carefully. I have a feeling they were old power supplies (used from a server that was running 24/7 for at least 3 years) and all the thermal paste had dried up, so the heatsink could not cool the mosfets well enough anymore.

[@tyronenelson9124]

You need to specify when you say the pwr_ok signal goes high, to justify whether or not a relay on its own is suitable as it may need complimentary circuitry to drive it, like a transistor.

[@Tylerjrb]

For a server grade power supply full load shouldn’t be an issue even at 12v. I’m guessing the main issue was going from 0 to 1650w instantly and the fans not ramping up fast enough to cope with the heat thus overheating. Or he didn’t give them enough time to cool down after the first run and before the second.

[@tehmoriz]

the rule of thumb for PC water cooling is: every 120mm worth of radiator is good for about 100W of heat. your radiator array, using this rule, is good for 4x4x100 = 1600W. Well done!

[@deejumsduzall8804]

When the power supply burned out it reminded me of a saying from my pawnshop .“Unless you can put the smoke back in that (inserts item) is toast.”

[@McTroyd]

Really cool, in more ways than one! Two things: 1) The server supplies didn't get a chance to cool down before the plug was pulled. Turn the LED off first and let the server supply fans run until they slow down, then kill power. 2) I couldn't remember if you said they were connected in series or parallel. If parallel, one supply may have been doing more work than the other. Unless they're perfectly matched, which is rare, one will tend to drive all of the load, and the other will do only as much as it has to. Edit: The easiest way to mitigate this would be to use 2 equal high-power, low-ohm resistors on each of the supply outputs. (If they're in series, though, I got nothing....) :D

[@remithomas3346]

series 15:46 But good to know anyway for parallel connections

[@McTroyd]

@@remithomas3346 Thanks. It seems like whenever I get a 50/50 shot, I end up guessing wrong 150% of the time. :D

[@GogogoFolowMe]

@@McTroyd Just like an USB plug

[@droyce4596]

You can also adjust the output voltage somewhat on most of the server psu's that I've come across. DEFINITELY don't connect the ground wires of both server power supplies to ground if they are in series. One needs to float.

[@trogper]

When you are connecting server PSUs in series, you have to make one of them floating ground/neutral. www.tjinguytech.com/my-projects/diy-24v-47a

[@RandomPsychic]

LMAO latex gloves while using a blow torch...priceless

[@jstriker623]

It's probably a COVID thing. Must have got tired of washing his hands 24/7

[@chatboss000]

is it flammable or does it melt?

[@ddegn]

It's likely to protect against the flux.

[@ashk7679]

@@chatboss000 it melts like regular plastic and thats give me anxiety.

[@bapairoy9634]

Brother you are doing a great job thanks to you . I learned from you some engineering with my tech with your information with simplicity. Thanks you brother..

[@dlennertzdl]

I’m subscribed to a NUMBER of similar KZbinrs for years. How is it that I JUST NOW find this channel?

[@chickencurry7642]

LTT: used their gaming pc to heat the house MATT: hold my LED...

[@smoke4131]

I got the likes to 69 👍🏻

[@alangabrielnietosaavedra3639]

Me: I have to do the university homework KZbin: Testing $1300 LED Me: OH I NEED TO WATCH THIS FIRST

[@Movie2Documentary]

NASA homework*

[@ramonmeer174]

Cia homework

[@OpRaven-62]

NSA homework*

[@duxtorm]

ASIO homework*

[@davidjalkh]

I've got an exam on friday but this is too good

[@91rickstar]

@DIYPerks are you ever gonna go back to this project it’s been 3 years ? Cheers Ricky

[@daywallker19]

I love how he has this big expensive LED light and 3 big radiators yet he has a janky power supply and mismatched/missing fans on the radiator. not complaining and i still love your content I just find it funny lol.

[@kingsnake545]

Maybe a honda civic radiator would have been more cost effective? its basically the same size as that setup.

[@kidenscruton1923]

jearss lol your probably right or anything rad he’d find at the junkyard it would probably be a less than the cost of on of those pc radiators

[@robinenbernhard]

Was guy on dutch pc forum 10yrs go who place truck radiator out side of his house to cool his OC game pc. Car and truck rad are super cheap a pc rad can easy be 100 euro

[@1boobtube]

The pump might be undersized to ensure turbulent flow in a civic radiator.

[@Jaker788]

Aluminum and copper in the same loop isn't good if you want to keep using it for long. I suppose you could use automotive coolant and hope the anti corrosion additives can prevent it.

[@SuperBrainAK]

@@Jaker788 I highly doubt he bought 4x480mm copper radiators for this system, he was already talking about cost of copper in making the watercooling block

[@DazedGhost]

Used for when you don't get enough sunlight during lockdown

[@fishsauce2221]

Tanning under that light will do nothing as far as I know.

[@coozant]

@@fishsauce2221 Light therapy is actually a thing though.

[@SirDella]

@@fishsauce2221 I'm pretty sure it will do something

[@fishsauce2221]

@@coozant Has that yet been proven by science?

[@fishsauce2221]

@@SirDella It will warm you up and maybe damage your eye sight.

[@Theonlyshaun]

I’m pretty sure Matt is a super villain. And that’s just awesome