I'm Building the Best LED Wall on the Internet 

Can you share your PCB board or do you recommend we create our own? That would be the hardest part for me.

PCB files are available on my GitHub linked in the description!

Slap on some good quality 1mm polycarbonate diffuser rather than 3d printing this not so looking good diffuser

As you have one esp32s3 per ´panel’ I would use 6pins for // outputs so you can have a correct refresh speed. Otherwise I think any animation will be too slow.

The refresh rate is pretty great as is. The bottleneck for this project will be the speed at which I can propagate the data between the panels when I have all 16. The esp32 has two cores so I’m going to use one to constantly receive and send data, and the other will be updating the pixels at around 30 fps.

😂

I’ve gotten sponsor requests from other PCB manufacturers and they’ve even offered more money, but JLC is genuinely my favorite. They make complex hardware seem so simple

Jail see pee see 🐝

WLED doesn’t support screen mirroring but there are many other advantages to it. I want this project to be scalable for as many applications as possible so screen mirroring is an important part of that.

I chose the ESP32-S3 specifically because it has dual cores so it can handle the amount of data it will need to process to achieve a decent frame rate but also its programmable through the Arduino IDE making it approachable for most hobbyists who may want to try a project like this on their own!

@@TheTechRandom first point is valid, as generating frames on the fly is way faster than, for example, reading data from SD card (it can take up to 5 ms for 4k points), but peak framerate is also limited by speed of LED data transfer - I believe that was the reason that some listings or darasheets state that maximum LEDs per line is 2 or 4k (though tere is no actual limit). but the Arduino IDE is still a method to program a controller so you still need to deal with coding at mid and low level and to interface different libraries with each other. It's no big deal if you're an engineer or at least coding hobbyist. But what I can see, a lot of hobbyists who specialise on practical skills like cosplay, crafting, making miniatures and so on are not good enough to be abe to code and prefer using ready-made devices. Does your approach allow a workflow like step 1 - download a program that casts something to your device, step 2 - buy a ESP32, step 3 - download a program that flashes your code to ESP32, step 4 - connect ESP to PC through USB, and flash it, step 5 - done? Or even better - buy online preprogramed device and download a program to cast something there - and start using it?

@WindLighter I would love to sell these as a pre-programmed product someday but right now that’s outside of my scope. For now I will be keeping the project open source so someone can simply buy the hardware and install my pre-written code. Anyone attempting this will still need the basic knowledge of soldering and 3D printing as well as setting up the Arduino IDE but all of those things can be learned for free on RU-vid already so I don’t go into the details. I am planning smaller projects for the future that will be more practical to sell and ship from my own store but we’ll see how it goes.

that was one of the reasons for making a project from the ground with another controller since in STM32 architecture it's easy to make 8 or 16 channels from the start with simple DMA setup

I’ve used WLED for small matrices and all of the lights in my house. The effects are great as well as the controls, but for this project I want to specifically mirror a PC display so that’s why I’m doing it this way instead!

​@@TheTechRandomIt is technically possible to use wled and signalrgb to do so (I'm trying that to make a custom locally dimming backlight for a high brightness screen), just define a custom led strip for each vertical line of led's in your array. Not sure how well it'll work but looks hopeful so far. I'm trying it with a 28 x 18 array

Could you get signal to recognise them as an array of leds?. For mine i had to define every individual row as it's own custom strip

My current wall uses a white diffuser and it works, but from my experience the darker colors don’t look as good. With the black diffuser I get a lot more contrast but the screen is less bright. It’s a trade-off that I’m trying to balance.

@@TheTechRandom Good stuff just wanted to put the idea out there

Price mostly but I also like the pixel aesthetic. P3 or P2 panels will happen eventually if I can make the money back.

@@TheTechRandom Thank for reply. I am doing my project, raspberry pi 3 and matrix led. If that looks okay, I will just share with short video although that might be lame cuz it is quite old and nothing new.

The files are available through onshape but it can be a mess trying to find them there so I’ll add them to my Git repo

@@TheTechRandom Can't wait. Thanks!

cad.onshape.com/documents/0b75d8a92eaed112abe058e4/w/ae56d212076a93f52d54f4f5/e/923ae6ff45cf32c0e0cd9106?renderMode=0&uiState=663526a8ddded813a2aa8592

If it’s a dev kit then yes. If you’re making your own board you’ll need to step the 5V down to 3.3V with a linear regulator. The 30 amps is the maximum rated current for your supply and not the amount of current that the board will actually receive.

Oh yeah I had three dead pixels I've had to repair already. Definitely something I need to improve going forward.

Just buy an old 75" tv

I got 100 for $500 by bulk ordering on Ali express. The amazon listings are more expensive since they only let you order one or two at a time

See my last video haha

@@TheTechRandom 🤔🤔🤔 Nah

I watched it it 2x speed. We are not the same.

Move on then

I watch everything at 2x on phone 3x on the computer. At 3x I heard every word.

skill issue

Not everything is at your pace...