Building a WS2812 LED panel (Code links in description)

*I'm likely going to re-make this video, or at least do a followup. Stay tuned.*
The WS2812B addressable LEDs (AKA NeoPixels) are wonderful little beasts, and since they are available at low cost from China in large quantities in the form of strips it makes them ideal candidates for turning into a nice RGB digital display panel.
Here's me building one with 192 LEDs (16x12 pixels) using a £1 picture frame and a bit of frosted perspex.
The controller board I used is the chipKIT Lenny:
* majenko.co.uk/lenny
The programming is done using UECIDE:
* uecide.org
And I used Cariad (with the NeoMatrix driver) and PICxel to do all the hard work:
* github.com/CariadDisplayLibra...
* github.com/mwingerson/PICxel
The code used in the video is the "HelloKZbin" example from the NeoMatrix library above.
* github.com/CariadDisplayLibra...
----
* Amazon Wishlist: www.amazon.co.uk/hz/wishlist/...
* Join us on Discord: / discord
* We now stream on Twitch: / majenkotech
* Send us some cash: paypal.me/majenko
----

[@donaldhenke2750]

your building this led panel inspired me to make one .i have to say thank you for the fantastic video.my panel is great and runing the rainboyw sketch is great.thanks

[@user-nj4su8wi8t]

Whare do coding??? 1 example than

[@219nate]

Really nice job! According to the datasheets the ws2812B leds draw a max current of 60mA per light, you have 192 of them which is around 12A max draw! When you tested it and your bench supply dropped to 3V I'm surprised it mangaged to even supply that!

[@TheGrrson]

That's 60mA if you are running each LED at pure white with full brightness. Each NeoPixel actually has three LEDs within-1 red, 1 green, 1 blue. Depending on the colors you are displaying (by mixing the RGB color) and the brightness, you can keep power draw pretty low with these. A good rule of thumb is just never go full white with full brightness.

[@bob-ny6kn]

@@TheGrrson If you keep track of the number of LEDs, you can calculate the brightness to stay below 90% of your power supply rating.

[@dacastro3098]

dude nice video!! keep doing like this!!

[@MrBobWareham]

Glad you purchased your flux from Farnell I got some from China that ran out in 3 weeks and when I opened it the wick inside was only 1 inch long a real rip off loved the project very nice thanks for sharing

[@tehgringe]

0.06A per LED 196*0.06a 11.5A and does not include anything else you have drawing from the same source. For those reading that assumes all LEDs on set to white. Each LED (RGB) os 0.02A and so unless you have a project that is effectively using this array as a white lamp, then you can probably cut down the power requirements. It would take some testing but if you are only lighting 55% of the LEDs at any one time and you go full power white then you can get away with something closer to 6A

[@Dancopymus]

Are Strips with 60 LEDs per meter? Strips with 96 LEDs per meter would be much? Is it necessary to connect the end of the last Strip to the power supply? Thank you

[@kamilz.2044]

Super projekt. Szkoda, że nie ma na filmiku pokazane jak zostało zaprogramowane oraz wygrane na urządzenie.

[@squirralien1863]

Some tinted Perspex would look awesome on this now.

[@carBONcar125]

Is it possible to make a triangular or trapezoidal matrix from addressable LEDs, that is, not rectangular?

[@MrKillerno1]

Take 20mA per color per led..... Comes to 12 rows by 16 leds times 3 (led colors) times 20 mA = 11520. That is safely to say that 12 Amps is sufficient. Quite a nice calculus indeed, so you prevent from blowing a psu... By the way, I like your approach and build... Very nice indeed...

[@carBONcar125]

Можно ли из адресных светодиодов сделать матрицу треугольной или трапецевидной формы, тоесть не прямоугольной?

[@tec-bert607]

You need about 10A 5V. You can look in the spec sheet how much 1 led need

[@NPC-et9ik]

Umm... No. 4 amps is plenty

[@DanFagerburg]

What type of wire did you you use to connect each row of LEDs?

[@lanphanh]

Do you have the fun programming part to run this panel? Would you please make a tutorial how to build and program the controller? Thanks

[@KrypeaxFX]

How do i know how much Volts and Amps i need for my 16x16 WS2812B Led Matrix?

[@reuven2k]

Hello dear friend, is there an option to make this beautiful thing you made, but with 6 strips of 5 meters each? Of course I supply the voltage externally and not through the controller? I want to do exactly like yours but with 6 strips of 6 meters each. Waiting for your reply

[@Emike-nc9ew]

Your panel is very efective cus you dont need to cut every single one.

[@pavelsanchez9606]

How many meter long do you use for this project

[@reecemusselwhite1967]

hi good video but from my understanding you can not push power backwards on these leds hence the reason for the arrows data power and live power would push forward only. for you to power inject you would do that half way down equaling out the power usage . i have done all of mine on a larger scale my largest is 1,476 led's matrix i power injected 2 times i used a esp32s chip and boosted the data line with a low level converter 3.3v to 5v jump as data pushes at approx 3.3v this helped with glitches as this is on a large scale works seamlessly hope this helps . My power booster is a 60amp power supply it doesn't use that much but i also use that for my led singing Christmas bulbs.

[@ahmadhabibpoor6288]

How much current it takes? I think very large amount of current need🧐🧐

[@jonfs2000]

Thanks for the info .. but what about power supply? How much current required?

[@xenerius2151]

Well each led require 60mA i think

[@bob-ny6kn]

12A full white

[@jeremy_page]

I am kind of new at this but... 16x11 = 176 "pixels". Each of the WS21812 at full-white/bright = 60ma. 176 * 60 = 10,560ma / 1000 = 10.6a. So to drive the entire board you'd probably need a 12a power supply.

[@MajenkoTechnologies]

Yep, that sounds about right. I didn't have the WS2812B specs to hand to calculate it.

[@Wingnut353]

@marcoNLD Note you could drive more LEDs at lower intensity... what you are calculating is peak current, which if you program your application carefully you can avoid ever hitting that.

[@bob-ny6kn]

@@MajenkoTechnologies If you keep track of the number of LEDs, you can calculate the brightness to stay below 90% of your power supply rating.

[@rajujahire]

Ardiuno tiny can be used for this?

[@azoliadebwoy4370]

how much will be the total cost in US Dollars for designing this kind of LED display

[@asivaprasadam]

Max Current Intake = Max Current Intake by a Single LED * Total = 60mA * (16 * 11) = 0.06 * 176 A = 10.56 A (~ 11A). So recommended power supply is 5V-11A.

[@bob-ny6kn]

If you keep track of the number of LEDs, you can calculate the brightness to stay below 90% of your power supply rating.

[@michaelkarger7175]

You made my craftsmanheart cry @ 04:17. Are marking gauges that expensive?! Ok, i' send the posting to fast: You can use them as water pump pliers or a hammer for tiny nails.

[@DaleDix]

We haven't got Pound shops in Australia, can I get one from the Dollar store instead?

[@MajenkoTechnologies]

Nope. Gotta be a pound shop.

[@gep8639]

Excellent

[@tronicstar]

nice channel subscribed !!!

[@holocomix]

What if I am making an 8ft by 8 ft wall, how many amps are needed for that?

[@suzuiming9459]

JUST NEED TO KNOW HOW MANY LED. 1 LED .05 AMP

[@Valholo]

@@suzuiming9459 1500 LEDs

[@trackersito]

Hola, en que parte del código se declara el pin de los datos?

[@bob-ny6kn]

PICxel strip(16*12, 0, GRB); Sorry, that was wrong... it is in PICxel.h... // pin control variables uint8_t pin;

[@sanjaykhurana3400]

Super. King.

[@fns58]

Super cool project that sadly resulted super choppy for using one of the crappiest spray paints I've ever seen xD

[@MajenkoTechnologies]

And that's expensive hammerite too. Serves me right for paying extra for good paint...

[@vhicho2011conejita]

Si puedes me envías la información para creerlo aca

[@flinkiklug6666]

Can you easier connect power on the other side as Data? Than you do not have both on one side. Vor the current it is not important in wich direction it flows

[@DanFagerburg]

Could you let me know?

[@FardinAmiriSF]

bro the code doesn‘t work

[@minhvo111]

you better do step by step with connection a wire?

[@liney118]

why didn't you paint the board before you installed the leds

[@MajenkoTechnologies]

Because I wanted to paint the LEDs too.

[@liney118]

@@MajenkoTechnologies ohh, i would have sprayed the board and touched up the leds with a black perm marker.

[@mortezaghahremani1165]

خیلی خوب

[@vhicho2011conejita]

Podrías mandarme archivos para hacer uno y provarlo

[@MajenkoTechnologies]

Realmente no hay ningún archivo para enviar. Solo las bibliotecas del chipKIT PIC32 se vinculan en la descripción. Siempre que tengas una placa chipKIT basada en PIC32 puedes usar esos archivos. De lo contrario, si eres Arduino necesitarías usar alguna otra biblioteca que no sé.

[@R.j6004]

Compilation error: PICxel.h: No such file or directory ... ERROR FILE 🤔🤔🤔🤔🤔

[@jitendrachauhan9977]

Give me Led Strip purchase link

[@MajenkoTechnologies]

eBay.com

[@sudhi7232]

Plz give me the programming code

[@MajenkoTechnologies]

Read the description

[@user-nj4su8wi8t]

Whare do typ coding

[@bob-ny6kn]

16 x 12 x 60mA = 11A (11,000 mA)

[@vhicho2011conejita]

Tengo un taller o grupo de niños con los cuales trabajo después de clases para que aprendan programación y electrónica sería de mucha ayuda tu proyecto

[@MajenkoTechnologies]

Suena bien. Si puedo ser de alguna ayuda, avíseme, puedo proporcionar más detalles y ejemplos de código si los necesita.

[@vhicho2011conejita]

Sería bueno empezar por la construcción física y después cuando tenga programas los comparto con ustedes gracias

[@vhicho2011conejita]

Mi correo electronica_vhicho @ Hotmail. Es más directo

[@vhicho2011conejita]

Majenko Technologies seria ideal un paso a paso para que los ñinos entiendan yo les traduzco

[@RealPackCat]

100+/m would have been less fuzzy. This is 2024, not 1990's.

[@supergangentertainment5063]

The most important thing I was hoping to see is the program for the latter's and the connection but u skipped it 🤦‍♂️

[@MajenkoTechnologies]

The program is linked in the description. The connection is one wire.

[@abecoulter8550]

WHY WOULD YOU PAINT THE STRIPS????????????

[@rigidhammer7376]

Bec hes,crazy

[@MajenkoTechnologies]

To hide them. The perspex, although frosted, can still be seen through. By painting it all black except the emitter portion of the LEDs you hide it all away and can't see it.

[@sanjaykhurana3400]

2812. Vote. 12. Hai.

[@v.prasannarani6355]

super but no clare

[@MajenkoTechnologies]

You mean the audio? Yeah, I had a crap microphone then. I have bought a new one since, and my videos are much much clearer now. Maybe I should take the existing video and re-dub the audio? May sound a little fake and contrived then though.

[@vhicho2011conejita]

Diagrama pleace

[@TECHNO_TURK]

code please

[@vhicho2011conejita]

SOLO FINES EDUCATIVOS

[@dominictoretto9305]

Meybe for you!!!

[@lukasschmidt50]

Bevor ich kotze muss ich abschalten. So einen Murks gibt es selten

[@Ravenseyes10]

More like 5v 15a power supply..

[@rigidhammer7376]

Poor tutorial. Most important parts were hidden under black screen. Didnt show the connection soldering.

[@MajenkoTechnologies]

Dude, there is literally one wire plus power and ground.

[@minhvo111]

do like fesh showing people bro

[@shreyaskumar5366]

""""Cheap ws2812 leds"""" Bruh thats expensive here in india

[@kelvinkersey5058]

the bleedin obvious bit is the gumming and soldering, which didn't need to be here. the interesting bit is the programming, which isn't here. what a waste of time!

[@MajenkoTechnologies]

KZbin is not a place for programming. You can't copy and paste from a video. The programming is linked from the description if you'd only take the time to read it...

[@jamietrip6621]

Definitely a place for programming, I learn better from someone talking if I don't understand that particular subject than reading the docs.

[@MajenkoTechnologies]

Maybe I'll do an extra video all about programming it - not that there would be much to see, all the programming is done for you in the DisplayCore libraries.

[@I77AGIC]

maybe that's your specific case but I found this video pretty useful

[@merouaniabdelkarim6337]

@@MajenkoTechnologies so u r saying that u-tube is not for learning. so bear in mind that there is EE pros posting in this triangle play botton

[@gunnifreak]

Handwerklich sehr schwach. Draht abisolieren mit Seitenschneider

[@vacanzefreeigeamarina9756]

Sei troppo lento. Meno chiacchere e più decisione, io ne ho fatta una con 1500 pixel in metà tempo. Più veloce e meno bla bla

[@rigidhammer7376]

You have,more talk than teaching us how to build that. Wasted my time