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Building a true 4k Projector (Patreon)

Published:
2020-06-24 16:06:33
Imported:
2026-06
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4k Projector (no sponsor)

Especially for you Patreons! :) Despite being homemade, this DIY projector packs a punch! Here are the main components required for this build: Aluminium: https://rover.ebay.com/rover/1/711-53200-19255-0/1?ff3=4&toolid=11800&pub=5575117832&campid=5337657473&mpre=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3Daluminium%2Bsheet Threaded rods: https://rover.ebay.com/rover/1/711-53200-19255-0/1?ff3=4&toolid=11800&pub=5575117832&campid=5337657473&mpre=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3Dm6%2Bthreaded%2Brods%2B1m LED (choose 5600k for pure white): https://store.yujiintl.com/collections/led-cobs/products/bc-series-high-cri-cob-led-bc160h-100w OR (cheaper, but larger diameter - choose 100w) https://rover.ebay.com/rover/1/711-53200-19255-0/1?ff3=4&toolid=11800&pub=5575117832&campid=5337657473&mpre=https%3A%2F%2Fwww.ebay.com%2Fitm%2F183184745144 Heatsink: https://rover.ebay.com/rover/1/711-53200-19255-0/1?ff3=4&toolid=11800&pub=5575117832&campid=5337657473&mpre=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3Dcpu%2Bheatsink%2B-laptop%2Btower Power board: https://rover.ebay.com/rover/1/711-53200-19255-0/1?ff3=4&toolid=11800&pub=5575117832&campid=5337657473&mpre=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3D250w%2BDC%2Bvoltage%2BLED%2Bconstant Fresnel lenses: https://rover.ebay.com/rover/1/711-53200-19255-0/1?ff3=4&toolid=11800&pub=5575117832&campid=5337657473&mpre=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3D7%2Bdiy%2Bfresnel%2B2 LCD panel + control board: https://rover.ebay.com/rover/1/711-53200-19255-0/1?ff3=4&toolid=11800&pub=5575117832&campid=5337657473&mpre=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3DLCD%2Bmipi%2Bhdmi 4K LCD panel + control board: https://rover.ebay.com/rover/1/711-53200-19255-0/1?ff3=4&toolid=11800&pub=5575117832&campid=5337657473&mpre=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3D5.5%2B3840%2B2160%2Bcuring Large format camera lenses: https://rover.ebay.com/rover/1/711-53200-19255-0/1?ff3=4&toolid=11800&pub=5575117832&campid=5337657473&mpre=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3Dlarge%2Bformat%2Blens%2B%26_sop%3D15 How to make your own front-surface mirror: https://www.youtube.com/watch?v=IaEaaeajCSI DIY Perks Extra video on powering LEDs: not yet uploaded

Comments

Anonymous

That is a great build and wonderfully explained.

Anonymous

Awesome project! A lot of details contained

Alan Devine

Any PDF with a BOM and guideline prices?

Anonymous

When will the PDF Guide be available?

Anonymous

Hi! I love your ideas and the way you make nice things out of them. I also like, that you take time to make a project perfect and then show it to other people. I‘m very into your recent project of the „true 4k home-cinema projector“. Could you please give a review of the projector? Because I‘d like to see how good it‘d fit for me. For example show it using in daylight, the distance it needs to get an image with 65“ or more, the contrast (not with bright images, but with an image of for example a nightsky). It‘d be a very nice thing for not just me to get some more impressions of the finished projector. Thanks in andvance and keep on doing such amazing projects. PS: I think there are some bad mistakes in my text and I‘m sorry for that, but I‘m not a native english speaker

Anonymous

Matt, i have a question and please reply to my question cause I’m not able to find the answer. If I’m using a lcd panel with hdmi board, how i will get audio?

ucmRich

Thank you S000 much for this :-D

Anonymous

does anyone know what the maximum screen size is I could expect from this project?

Anonymous

This was a really cool project, and it took me forever but I finally got it done. The written guide has been done really well too.

Anonymous
>>45176458

The ideal size would be 5.5 inches, but it all depends on the focal lengths of your fresnel lenses and projection lens. I would say the maximum is what your projection lens can cover, which can vary, but 5.5 inches is a safe bet, and it worked for me.

Anonymous

Hello, I want to ask if the lens can be removed with a special projector. Because the shot you sent is hard to buy.

Colin Oakes

Would using the 4k lcd screen with the control board instead of the phone lcd screen allow more light to get through and help with some of the brightness issues and vignetting? Those screens are specifically for this kind of project aren't they?

robert mack king

looking for the pdf guide on this to make at home were is it

Anonymous

Hi, i need some advice please. I’ve got a 28mm 200w led and a 10.1 screen, how do I work out what large format lens to look for. Any help is greatly appreciated, thanks

Anonymous
>>61842195

You can get custom made triplet lens projection glass, from back when people made DIY Projectors from 12 - 17 inch LCD Panels... https://www.aliexpress.com/i/32740555449.html or you can buy a literal 'projection lens' made for projection... some of these are large enough for a good picture, what he explains is kind of incorrect, you don't need to make sure the LED width is the same as the lens hole, but the collimation of the LED Panel for the focal length of the fresnel. It's a bit confusing to try and explain ... but I added a link here to a perfect projection lens that will suit.