2048 LED spectrum audio analyser MS3264 from Banggood 6"x12"
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- Опубліковано 16 жов 2024
- A 2048 LED Red/Greed spectrum music analyser from Banggood.com
Link for this analyser goo.gl/VUxHGo
or a selection of LED analysers goo.gl/9RkqVr
DECLARATION: this item was supplied free of charge to me.
I will always try to make a fair unbiased video. I do not gain any monetary fee for making this video or from any sales between you and Banggood.com.
Really like the outtakes and all the other small things you added to the video. Was really enjoyable. Instantly tought if I could improve the analysis on a microcontroller myself
bitluni's lab I have watched many of your videos and im sure you are capable of programming this thing further.
Yeah that LED panel is a totally standard unit, it's multiplexed so it doesn't need very many connections. They're nowadays very cheap (used in video walls and signs etc) and available in all sorts of sizes and pixel densities (as well as RGB not just RG like the one you have). If you google "RGB LED Panel Driver Tutorial" there's a pretty good explanation of how they work w/pictures. Not too hard to hook it up to anything, however if you want intensity control of each pixel you need to drive it quite fast.
That has not been just harmonics, that has been aliasing. When you don't have a bandwidth limiter on your input that corresponds to your Nyquist frequency, that's what you're gonna get, the frequencies beyond Nyquist get reflected back into the sampling band. This is why when sweeping in one direction, you'd get major peaks moving that way, while minor peaks moved the opposite way!
I enjoyed the video, Markus, thanks. Quite a jaw-dropper when you read the Chinese distructions. I could tell you really did know the audio/electronic bits but had help with the rest. I think the audio range is limited so the display gives a Gaussian shape rather than a lot of spikes up to 15KHz or so...more for a mini disco than a lab. Your out-takes were a lol.
Just casually reads Chinese :0
Very cool panel. Thanks for sharing this. Loved the outtakes.
ThomasGrillo Thanks Thomas
I need a cup of tea
"I need a cup of tea" - the most british outtake I've ever seen ;-) 20:50
annafan83 Oh we Brits drinks gallons of Tea, I must have about 3 pints every day.
One of the most polite 'cursing' outtakes I've ever seen. Funny, too.
Michael Smith Thanks Michael
16:10 while increasing frequency, some peaks are moving up and some are moving down.. Is this what aliasing looks like ? Bad/no input cut-off filtering on the input ? It's a cool display. It can be used for many things, and I'm sure someone can hack up a better controller :)
I was thinking the same thing while watching the video. Probably no low pass filter before sampling the signal at a pretty low sample rate.
Hi mate I’m buying this a large spectrum 129cm..and it’s the same as yours but I want to play it from my tv and it does not have any jack conectors
Outtakes was the best part!! Fab stuff. Thank you!
I had no idea you could read Chinese.
he probs has the google translate app off screen why would he be reading Chinese like its chinglish.
Fair point
iNfx1 ¡Chingao!
Perhaps he can read it, but not very well. Markus, can you read Chinese with any degree of facility?
I like to imagine he knows chinese.
Hear me, my Friend M.Fuller :-), i have a very difficult question to you: you know that in synthesizer (mostly in analog versions) there are led´s to show how many voices working in polyphony, for e.g. 8x led. There are for givin an status signal (on/off). Do you think it can be possible to construct (it is not an question of it is cheepy or expensive - only of the possibility) this panel you explain in your video - i am writtn under here, into that way that it can show as the working in a status on/off-mode for Voices? But not for analog synthesizers, i am think to digital synthesizers like an 128 Voice Rom-Sampler. And more: in these fact of number the led´s it is to be need 16 x 128 voice synthesizer. Its difficult because, from where can be taken the signals? I am thinking maybe by read out the midi- data- flow... ? What do you think? On this way i am want using the chance to say: you make a great work here on YT! Best wishes & thanks in the front of... ...René
This item is no longer available , Or the Link to Banggood has expired but I can't find this item on the Banggood site
I guess you know this but for other people: it DOES flicker but not to a human seeing it directly cause it flickers too fast. The matrix's individual LED's are driven with multiplexing (a row/column type of addressing).
could you daisy chain two or more together to make a long display?
no i think it would just show exactly the same image on both displays
Thank you for your video, it is very explanatory.
Would you like to give me some advice please?
I have an amplifier with bluetooth input. therefore, I can not recover the signal with a 3.5mm jack. Can we connect this system to a microphone to get the sound of the amplifier?
Thanks for going into so much detail. Subbing!
I can't see clearly from the video, but which Ipad Spectrum Analyser app are you using? Great Videos btw.
Parousia The last Hello the ipad app is called Spectrumview
Thank you.
What app do you use on your iPad for the analysis?
Hey I want something where if i play a specific frequency (sound) I can get an LED or some other light source to play the exact same frequency (color) but I have no idea where to start. I don't even know what to write in a search bar to find my specific request. Do you have any suggestions?
Hi Mark. I think I know what you mean though a frequency of light is much higher than sound frequencies so one cannot be the exact same frequency as the other. but I’m guessing you mean low to high frequency in sound making a LED go from say red to green to blue ? or something like that. If so I think you may need to look into arduino as theres so much you can do to program one of those little boards to make them do almost whatever you can imagine and there must be a sketch (a sketch is a program) that someone may have already written that will change the colour of an led depending on a sound source. these programs are normally found for free on websites like github. so have a search for arduino and github plus theres lots of kits available to get you started in your projects.
@@markusfuller hey man thanks for the reply much appreciated. I am not sure exactly what to look for. I want to be be able to play lets say 528Hz sound and show 528nm on the light spectrum
Mark Henein Hi Mark. that would only be possible with some electronics and something like an arduino or raspberry Pi and a bit of programming to convert the analog input of the sound, analyse where it is in the audio spectrum then give an output of a specific colour to to leds but just the output itself would also have to be split into 3 outputs for red/green/blue at varying intensities just to blend the leds into making that colur that you require. it is possible to do but you need someone who can program arduino or Pi or something similar.
@@markusfuller do you know how i can find someone who can build this for me?
Could you recall the max amps the led power supply pulled.?
Hey Markus, why not just try and add the switches (or shorting the contacts with pliers) to check if they just left those switches out to save cost but included more functionality than you can actually access? I think that's quite common, to have hundreds/thousands of those chips produced, which are all the same but limit the users/buyers possibilities by taking away "access" to them. Just something that I thought would be interesting :)
hitmiccs Hi I shorted the parts on the board today and nothing seems to happen, maybe it requires a bit more programming to use the extra features
Hey, thanks for trying anyway - could have been a nice little extra to play around with.
Is there any way these can be chained?
yeah... one that size would be FAB!
Great video Mark. Love the out takes. Will you be doing a video to explain some of the words you used? Ha ha . Keep up the good work.
CONCERTSEC I dont know the meaning of those words, there just some words I have heard Jason use.
markusfuller thought I recognised them
Great video as always mate, blown away by you reading that Chinese manual!
Gary Robinson I can only read a few basic parts due to years of electronics and I did have google fill in all the gaps for me.
Is it possible to put another little switch on the board (K2)?
GameBreaker I tried shorting that but nothing happened
Well at least you tried. :)
For the audio testing you should have used a SINE wave so you wouldn't have had the harmonic issue! Suggest you try it again.
Mike Fellhauer Hi Mike I did use Sine wave but it was just a quick setup so the analyser on the ipad was using its inbuily microphone to pick up the speaker bar just behing it. I know this is not the scientific way to do this but I could not find my TRRS audio in cable for the ipad. the LED analyser did however have a direct cabled input.
Where can I buy this product?
Joseph Duarte Hello I got this from Banggood.com
Joseph Duarte Theres a direct link to the product in the description under the video.
great test thanks
Thanks for showing us this Markus. I'm a cheapskate, so I thought this was rather expensive for what it is and how it performs, but yeah... to assemble something as neat as this in a DIY world would be frustrating to get the same tidy results.
The lack of accuracy is probably down to the method of sampling and conversion methods required for an "off the shelf" micro controller as opposed to a bespoke one - that would probably double the price.
Loving the out takes. Did you crush the naptha tin out of frustration? Haha. I always look forward to your content Markus, I'm sorry I can't contribute to help bring more of your content our way. Maybe stick a paypal.me link up in your About tab so I / we can shove a few quid in if I ever have any spare if we can't do Patreon? Just a thought.
Cheers,
Neffers.
好的翻译，主席先生。
哈哈
我祝你最好。
德国的问候。
TKossi / Thomas Thankyou and hello to Germany :-)
Lol, thx 4 testing this... Lol, the Outtäkes are cool...
wish you had done this video before i got mine. i was hoping to find some arduino or pi code to make it more accurate
love your videos !
Great channel!
Nice review and looks a fun project. On checking the links below however, I spot a problem. Although the unit is keenly priced you will get nabbed for customs excise charges by the Post office, here in Ireland anyway... The customs charges will cost near as much as the item itself... Bugger
Ribbitmefoot Ouch you have a high customs rate in Ireland.
but it clearly says Value €0.50 on the declaration sticker :)
HI Markus first link brings 404 Page Not Found
We couldn't find what you're looking for.
Hello I think the page may not exist anylonger as it was a while ago when i made this video the sellers may not be selling them any longer.
Are you reading a Chinese manual? Legen wait for it.............DARY LEGENDARY
That looks the bollocks mate :oD
I want to buy
not exact just a rough estimate if you can recall.
4096 bins is possibly the way to go any higher will cause the unit to slow down, shame the processor is no a TMS******* DSP.
DAVID GREGORY KERR yes I think this is working at its limit
'Destruction Manual'
lol
Damn! You can read Chinese! Wow!
How on earth did they acheive such bad spectral analysis? It's not that hard. Jeez it doesn't even *roughly* resemble a few bandpass filters! It looks like it produces almost random content?!
YOU CAN READ SIMPLIFIED CHINESE. ... cor!
is beautiful but not accurate ...i won't to buy one this ...but i dot pay for this spectrum because is not accurate is a Crismas tree
LEDs look cheap