Building a TRUE 4k home cinema projector (it’s awesome)

15. jun. 2020
4 416 796 Ogledi

Despite being homemade, this DIY projector packs a punch! Also, the first 1000 people to use this link will get a 2 month free trial of Skillshare Premium Membership:

If you enjoy project build guides like this, please consider supporting my work on Patreon:

The PDF guide is now available over on the Patreon page:

Here are the main components required for this build:


Threaded rods:

LED (choose 5600k for pure white):

OR (cheaper, but larger diameter - choose 100w)


Power board:

Fresnel lenses:

LCD panel + control board:

4K LCD panel + control board:

Large format camera lenses:

How to make your own front-surface mirror:

Video on powering LEDs:

  • The written guide is now live for those interested! At the moment it's exclusively on Patreon for ease of hosting on my part:

    DIY PerksDIY PerksPred 8 meseci
    • Thanks so much for this project! Quick question - How much is the maximum distance from the wall that this Projevtor setup can output without noticeable reduction in projected video quality?

      Fraz AjmalFraz AjmalPred 4 dnevi
    • How much did you spend to do this?

      wayn rooneywayn rooneyPred 11 dnevi
    • @Christopher Black did you manage to build it?

      Olefile KingOlefile KingPred 12 dnevi
    • I love the way you have to pay to see how to do it

      yasmin's worldyasmin's worldPred 13 dnevi
    • @Dhananjay Kushare no

      it's yousifit's yousifPred 16 dnevi
  • actually i thought a projector could use a lots of light.

    attah hamidattah hamidPred 27 minutami
  • There are lots of videos made on "DIY LED Video Wall" made using led strips but none of them are genuine,, could you "please" make a video on that.

    Yashwanth HYashwanth HPred 59 minutami
  • Wow. Your le93ndary !

    le93ndary reviews2020le93ndary reviews2020Pred 11 urami
  • imagine that mounted upside down. headings banging left and right.

    SeNniNSeNniNPred 14 urami
  • speakers?

    xSpace AstronomyxSpace AstronomyPred 19 urami
  • check out related tech content on my channel 💕 please do subscribe

    BeingmehullBeingmehullPred dnevom
  • THANK YOU !!

    XplorerXplorerPred dnevom
  • Great Job! Very Enjoyable content as a fan of a good projector!

    Jason YeomJason YeomPred dnevom
  • Wait a minute, you never compared the home-made projector to off-the-shelf $2000 one. :/

    Naif JanNaif JanPred 2 dnevi
    • He did

      Ahmad ZakwanAhmad ZakwanPred dnevom
  • Very cool, even if I have no chance of finding the time & patience to replicate a project like this! I wonder if an RGB light source would improve the brightness & reduce LCD thermal issues, as it would focus all of the power on the wavelengths that will pass through the LCD rather than be absorbed by it? You might find a 200w RGB LED doesn't increase the LCD temperature as much as a 100w white LED, though of course you'd need to boost the cooling of the LED. On the LED cooling, generally heat pipes tend to work better with gravity assisting them and the thermal load being at the bottom, so moving to a water cooling system may give big improvements if that's an issue. Awesome work. Love your videos!

    David McNaughtDavid McNaughtPred 2 dnevi
  • 😎

    Ovrlrd UnknownOvrlrd UnknownPred 2 dnevi
  • Maybe water cooling the screen by making the water pass between the screen and a 300W LED with a reflector would make it more silent and brighter..

    the_dudethe_dudePred 2 dnevi
  • Can LCD screen work, if we remove back polorizer layer?

    Abdullah KhanAbdullah KhanPred 2 dnevi
  • i would love to see the 500w LED in it ;)

    kacmogkacmogPred 2 dnevi
  • perfect :D

    Levente DávidLevente DávidPred 3 dnevi
  • I bought an xperia xz for 99 € and put it in an F30 projector that I bought 1 year ago for 140 € the rendering is magnificent.

    BNXBNXPred 3 dnevi
    • Are you serious? If so, I got the same things lying around - how did you do it?

      Incentive IncentivesIncentive IncentivesPred 3 urami
  • Cool video - however why build this ? Walmart 43 inch 4k TV $228.

    Brett RisenBrett RisenPred 3 dnevi
  • Oh I’m so tempted . Used to build speakers and amps when I was a lad. Great lockdown project. Thanks.

    Ig LooIg LooPred 4 dnevi
  • Fake. You'd never be able to find the focal point using the Sun in England.

    Duncan TaylorDuncan TaylorPred 4 dnevi
  • why you are not Elon Musk!?!?

    Gianluca MingottoGianluca MingottoPred 4 dnevi
  • Hey Matt! Can you make a DIY RGB keyboard? Would be very interested to see how you'd do that!

    Pim VisscherPim VisscherPred 5 dnevi
    • I can't really think of any special way to do it tbh... there are switches that have an RGB LED integrated into them, and you can just plop them into a PCB that is compatible with them and call it a day Most keyboards use the clear/translucent housing switches with SMD LEDs on the boards (usually ws2812b or sk6812)

      RafeeRafeePred 3 dnevi
  • Great video, you really answered all questions I had during the video, thank you so much.

    IC-FRIEZAIC-FRIEZAPred 5 dnevi
  • Most ppl here say they dont have the materials or money, well if you manage your money well and find a job, invest a bit and of that return you buy whatever you want, you make life easier!... C'mon YOU ARE GROWN, DON'T LIVE AN BROKE ADULT LIFE!

    IC-FRIEZAIC-FRIEZAPred 5 dnevi
  • As a cinema 4K projector owner I will just deal with my latency by crying quietly

    Deez NutsDeez NutsPred 6 dnevi
  • When he said 4k screens of this size are not at all common I was thinking of the sony And then he mentioned the sony I was like yeahh!!! XD

    The Muffinman 711The Muffinman 711Pred 6 dnevi
  • Going to have to build one an do some changes am thinking if springs between plates for leveling.

    alun robertsalun robertsPred 6 dnevi
  • Hi.. Why do the front lens work from the side and not straight from the LCD screen? What's the difference if the LCD is straight in line with one line? Does it affect image quality?

    Wrh WrhWrh WrhPred 6 dnevi
  • Built them in the past. Cheaper to pay a few hundred bux nowadays and work to about 80inch in full light room. Just go for a cheaper multimedia projector, they work great aa a movie projector and more. Cheers

    KrashulkaKrashulkaPred 6 dnevi
  • I don't see the point of expending a lot of time and energy building an admittedly impressive, but very cumbersome and large overhead projector from scratch, when the same thing could be made much more easily, cheaply, possibly better, and certainly more convenient by being much smaller, all by simply modifying a cheap old overhead projector with an appropriate LED light source, something I'm currently doing and hoping to do a video on. If anyone can tell me that I've missed something and therefore gotten it all wrong then please do let me know, I'd rather be proven wrong than remain ignorant! :)

    MadScientist512MadScientist512Pred 6 dnevi
  • I've seen many DIY projector builds where the LCD is in between the two Fresnel lenses, so that the light rays go straight through the panel... This is the first time I've seen it done this way with the LCD after the to Fresnel lenses. Is there any benefit to either way? My thought was that with the LCD in between the Fresnel lenses, the light will pass through the polarizing layer "easier" making the image brighter? Any thoughts on this?

    Louie AtienzaLouie AtienzaPred 6 dnevi
  • the threading down those rods, over and over, no thanks

    LygerLygerPred 7 dnevi
  • i calculated the cost and its around US $579.30 and im sure im missing some stuff like the laptop power supply, i'd be better off with a used 4k projector for a little over 600

    Wale AlizWale AlizPred 7 dnevi
  • I would like to have this projector.... Please give me

    Kevin Li Kit KwongKevin Li Kit KwongPred 7 dnevi
    • What do you mean.. Dont you know you Can just build it yourself?

      Flighty eyesFlighty eyesPred 7 dnevi
  • What is that MUSIC? I know it from somewhere, like it's calling out from my deepest cgildhood memories!

    DoggeDoggePred 8 dnevi
  • Matt ... you are awesome. Thank you for existing.

    ololh4xxololh4xxPred 8 dnevi
  • I might have missed it, how much electricity does this use?

    Tristan RyanTristan RyanPred 8 dnevi
  • 3 minutes in.......I go buy a Sony 4k projector for under 200 bucks 🙄

    Richard KocksworthyRichard KocksworthyPred 8 dnevi
  • Higher wattage LED wouldn't that big of a deal. Either of custom water loop or an AIO water cooler running low RPM high static pressure fans. Might even be good for what you built here. Of course you now have to deal with a radiator at minimum, pump/res/rad at maximum. Crazy build, I LOVE it! I might actually build one of these....and I sent this vid to someone I know that wants a 4k projection SimPit for computer gaming. Not sure the details for translating to a computer output, but this person would be the one to bridge the gaps.

    MrAcuta73MrAcuta73Pred 8 dnevi
  • haha wonder how many spanners have destroyed phones trying to do this !

    yandyyayyandyyayPred 9 dnevi
  • Very smart though :)

    Janos SzentpéteriJanos SzentpéteriPred 9 dnevi
  • Nee poliya

    Harikrishnan SHarikrishnan SPred 9 dnevi
  • Excellent video! Have you measured how many lumens it outputs?

    Bill QSBill QSPred 9 dnevi
  • Ok. How about a sound bar build to go with? Is it possible to build a diy Dolby Atmos or something like that?

    Tony BaddeleyTony BaddeleyPred 10 dnevi
  • The light shone is hot, no? How does it affects the panel?

    Amier AsyrafAmier AsyrafPred 10 dnevi
  • very nice.

    Kiran ChincheKiran ChinchePred 10 dnevi
  • Interesting how many of you guys have this project done. Have you even started?)

    Cyrill 108Cyrill 108Pred 10 dnevi
  • Hello I'm mad

    grotticraftgrotticraftPred 10 dnevi
  • Since you use a mirror I wonder is the image reversed or is left right etc.??

    tdrnkrtdrnkrPred 10 dnevi
  • Wonder if this is possible using Apple iPhone hardware...

    LoreZyra . TVLoreZyra . TVPred 10 dnevi
  • This is what Elon Musk would be doing if he never created PayPal.

    Chad JohnsonChad JohnsonPred 11 dnevi
    • lol

      Samson KinyanjuiSamson KinyanjuiPred 9 dnevi
  • The cost of the whole thing?

    PrezlamenPrezlamenPred 11 dnevi

    lissette veleclissette velecPred 11 dnevi
  • What a phenomenal super human. I enjoyed every video I've watched him produced.

    Anthony BalogunAnthony BalogunPred 11 dnevi
  • what star ! thank you

    alex crisanalex crisanPred 11 dnevi
  • Absolutely fun and i learned alot today, thanks man.

    Vaany RamanVaany RamanPred 11 dnevi
  • I love your ideas.

    Ryan singhRyan singhPred 12 dnevi
  • for a brighter LED why not add two more low noise fans at the lens section that blow towards the outside? Also, airflow is much more restricted when covered like that as opposed to a conventional fan grill

    Harold KhanHarold KhanPred 12 dnevi
  • This is incredibly cool! Might be worth trying to replicate if it's as low cost as you suggested. I wonder, though, what is the maximum distance you can be from the screen and still have enough brightness and sharpness to call it 4K?

    Kevin KonowalecKevin KonowalecPred 13 dnevi
  • Yo, besides, I think you can grow hair then be a Curt Cobain twin;)

    Andre NikAndre NikPred 13 dnevi
  • Next part: Bellows cooled projector

    tutacattutacatPred 13 dnevi
  • Figuring out if the phone is lcd or oled isn’t a problem, but how would one deduce whether the screen can be controlled remotely? I’ve got an old iPhone 6s that Id like to use for this project. I believe it does have an LCD screen.

    David ShawDavid ShawPred 13 dnevi
  • Curious how you would make the projection angle adjustable. Or at least calculate the angle. I'm assuming it depends on the lens you use.

    Why Name?Why Name?Pred 13 dnevi
  • Start simple but it became for expert only!

    jean-philippe tremblayjean-philippe tremblayPred 13 dnevi
  • I'm just rewatching to remind myself ill probably never build this , but its an awesome project

    Draw4yourlife3Draw4yourlife3Pred 13 dnevi
  • Amazing stuff! Would really like a 720 smallish projector maybe a raspberry pi for the underlaying computer stuff. Maybe have it driving a stepper motor for focus also.

    Alexander WingeskogAlexander WingeskogPred 13 dnevi
  • How much is the cost for the whole project

    yasmin's worldyasmin's worldPred 13 dnevi
  • Love it! I'm feeling a bit mindblown lol

    Daryoush NekooiDaryoush NekooiPred 13 dnevi
  • Amazing and crazy...

    KSTV Kajian Semarang TVKSTV Kajian Semarang TVPred 13 dnevi
  • i think u can try cars led projector headlamp, it give more bright..

    Adarsh RaveendranAdarsh RaveendranPred 13 dnevi
  • Remember back in the 90's when Anthea Turner made Tracy Island out of cardboard on Blue Peter and you sent off for a "Fact Sheet"?...... Well this is the 21st century "God Tier" equivalent! 👍😎

    CamENGCamENGPred 14 dnevi
  • a miniaturised 3d print solution would make this easy for anyone to make

    Aakash JanaAakash JanaPred 14 dnevi
  • its sad that there is a piece of hair in the image

    Samuel D'souzaSamuel D'souzaPred 14 dnevi
  • Can it be done using amoled screen

    Harun BaklanHarun BaklanPred 14 dnevi
  • Let me have yours mate. Brilliant video!

    Cotten HelmsworthCotten HelmsworthPred 14 dnevi
  • It’s 4

    cory ingliscory inglisPred 15 dnevi
  • I am absolutely impressed the only thing I would add would be rubber grommets where the wires passed through the aluminum to avoid chafing

    postersm 71postersm 71Pred 15 dnevi
  • What should be the distance between light source and lens if I use multiple leds

  • Очень интересно, но не очень понятно, что говорит

    Polzovatelgogolya AaPolzovatelgogolya AaPred 15 dnevi
  • Now instead of a phone hook it up to a Raspberry Pi 4, install Android TV on it and route an ethernet plug to the bottom of it.

    neoneyneoneyPred 16 dnevi
  • Hi Matt, really amazing project!! Can it be used as a pc screen? And to take it a step further, is it possible to use it for photo editing?

    Mae SmetsMae SmetsPred 16 dnevi
  • Too complicated for me to get

  • Великолепный дизайн! Спасибо за отличное видео и вдохновение. Подписываюсь!

    Сергей ДонсковСергей ДонсковPred 16 dnevi
  • Great

    Unknown NUnknown NPred 16 dnevi
  • Another excelent video from DIY Perks. I really enjoyed it !

    gambarimas87gambarimas87Pred 17 dnevi
  • I mean, I absolutely love having this DIY and all... but the parts cost is higher than retail 4k models, which are also more compact.

    Micah R. MaloneyMicah R. MaloneyPred 17 dnevi
  • Very nice! Impressive and the best as always. Shame there no CSI or other modern universal adapters on the market yet, to utilize the high quality 4K cell phone video cameras. Thanks for sharing!

    jafinch78jafinch78Pred 17 dnevi
  • so here is a proposal. in order to reduce the heat, could you use a flat infrared filter?

    Electronik-FArtsElectronik-FArtsPred 17 dnevi
  • Hey matt, could you do a follow-up on how one could connect this to a pc for gaming? because that would be really epic.

    dun candun canPred 18 dnevi
    • Maybe you can use remote control of your gaming pc through the android inside projector?

      Peter iPeter iPred 16 dnevi
  • this with a built in HTPC would be dope... think i may set about doing that

    Austin RossAustin RossPred 19 dnevi
  • Who wants to make me one?

    madelynexmadelynexPred 19 dnevi
  • You are a genius, your projector is a masterpiece, congratulations

    obed yeshuaobed yeshuaPred 20 dnevi
  • How tf did he pronounce aluminum?

    Jbaby425Jbaby425Pred 21 dnevom
  • What if you cooled the lens with a blower, sound deaden the inside to reduce fan noise

    Matt SantanaMatt SantanaPred 21 dnevom
  • Did anyone try?😒

    Antony raj.cAntony raj.cPred 21 dnevom
  • 3:39 did he just span this one single nut all the way down from this rod?!

    parpar8090parpar8090Pred 21 dnevom
  • Can someone send me the pdf guide, I really want to make this and I will pay you 10 dollars.

    Mostafa HabibiMostafa HabibiPred 22 dnevi

    Rexx BaileyRexx BaileyPred 22 dnevi
  • Two of the best voices, other one is @Mrwhosetheboss

    Prashant ChoudharyPrashant ChoudharyPred 22 dnevi
  • This project is amazing, well explained and you are such an amazing speaker. I'm a scuba diving instructor and I know how hard is to keep people interested at all time. My area is computers and electronic engineering, so this king of projects are so appealing to me. Thanks

    Nuno PenasNuno PenasPred 23 dnevi