May 26th, 2008
LED Bar Audio Spectrum Analyzer
Audio spectrum analyzers have always been cool either in Winamp on your computer, or in a sound system that features it. Now you have the option of building it and including it into your soundsystem. In fact i think it would look very professional if you place it inside a nice case.
The real-time system computes the distribution of the audio signal energy to 20 specific frequency bands and displays it on a 20 × 20 LED display. The PIC30F6012A was choose to control this circuit because of its numerous functions needed in this project.
LED Bar Audio Spectrum Analyzer: [Download Project] – [View Project PDF] – [via]
September 29th, 2008 at 10:54 pm
could you build one for me and sell it to me ? i have no experience with microcontrollers and SMD tech.
woudl like to have one, please answer me, thanks
September 30th, 2008 at 10:05 am
Phil, sorry but i can’t make it for you, i don’t have enough time.
October 2nd, 2008 at 9:18 pm
Phil,
I am building 2 already, one for myself and a friend. If you are interested, i could make another at the same time. If you are still interested email dan [at] 3zx [dot] co [dot] uk
October 26th, 2008 at 11:13 am
I have bought the same Audio spectrum analyzer from the author of this project(published in CircuitCellar magazine),Mr.Adamidis.It is very cool!!!His email is sv7fid [at] yahoo [.] gr
November 11th, 2008 at 10:01 pm
Wow, I’d like to build one, where can i buy a kit or one already put together, I Live in Texas, Dan, could you build one for me? Thanks.
Lukzter at Hotmail dot Com
November 13th, 2008 at 12:33 pm
id like to build one for my ham radio.audio output…e mail me where i can get a kit…november_uno@yahoo.com
November 13th, 2008 at 5:59 pm
You’ll have to talk to Dan, maybe he can make several kits and sell’em to you guys
November 13th, 2008 at 7:55 pm
hi there ..
hey dan, i was writing emails to you, didnt you recieve them ?
if not please mail me( napiksone [at] gmx.de) i am still interested in buying one from you, thanks.
November 13th, 2008 at 7:58 pm
Since the interest shown on this project is high, i think I’ll develop something similar based on AVR microcontroller. I’ll have it in shop when it’s ready http://www.youritronics.com/shop/
November 13th, 2008 at 10:15 pm
hey florian,
would be cool if this similar thing coul work withoutr SMD or its pre-made, because i cant really solder SMD. Thanks
November 13th, 2008 at 11:32 pm
yup, I’ll take that into consideration
November 14th, 2008 at 1:13 am
Hey guys, sorry for the latency of my replies, everythings been a bit up in the air at the moment.
It appears enough interest is here for me to justify ordering a set of boards from a PCB house. If anyone and everyone who is *defineatly* interested in a kit being produced to order please email me at dan [at] 3zx [dot] co [dot] uk
*I CAN ONLY JUSTIFY PRODUCING A KIT IF 5 OR MORE ARE ORDERED*
November 14th, 2008 at 4:13 pm
i will take one, if you prepair it so that i dont have to build SMD
Thankx
November 18th, 2008 at 2:41 pm
If you are intereted I could build something similar, based on the ATmega88 board.
November 29th, 2008 at 12:24 pm
Hey guys, I have the design almost ready http://www.youritronics.com/audio-spectrum-analyzer-under-construction/
Now I’m searching for a board house that will offer a better price and I will make about 5 pieces. The processing board will be all in SMD, but don’t worry, it will be available as ready assembled. Stay tuned for more news
November 29th, 2008 at 2:10 pm
well, it seems to me that things are going great, so iwould definitely order 1 – 2 assembled kits when available .
greetz phil
December 1st, 2008 at 7:27 am
Gostei muito, você pode colocar o desenho da placa?
(I really enjoyed, you can put your design on the plate?)
Estou tentando fazer um também mas não sei o que fazer.
(I’m trying to do too but a does not know what to do.)
Eu sou aqui do Brasil e isto seria bem legal por aqui.
(I am here in Brazil and it would be nice here.)
December 1st, 2008 at 7:29 am
Meu email é,
(My email is,)
raparecidoleme [at] bol.com[.]br
December 3rd, 2008 at 12:33 am
I finished doing the math, and the board will be available soon for 100 USD, assembled and tested. The display will consist of a 20×20 LED matrix made out of bargraph displays, this way the LED’s will be all aligned nicely.
The board has a 2,5 mm DC connector, this type of connector being widely spread.
The audio input is done via 2 RCA connectors placed on the board.
The board will feature 6 display modes which can be selected trough a pushbutton and future updates of the firmwire can be done trough ISP.
December 3rd, 2008 at 5:26 pm
well if its available i will order one … do you have paypal ?
Phil
December 3rd, 2008 at 5:54 pm
Phil, i think in one week I’ll be ready for sending the kit to you, we’ll talk about paypal than. I ordered PCB’s and parts, and it should take about one week for them to arrive. I’ll let you know when ready
December 3rd, 2008 at 8:13 pm
and the kit is completely assembled ? or do i need to build something ?
December 3rd, 2008 at 10:35 pm
yes it will be completely assembled, but if you like it, i could send it un-assembled so you can do it yourself
December 3rd, 2008 at 10:50 pm
Phil would like to send one for me?
December 3rd, 2008 at 11:08 pm
would he ?
I don’t understand what you mean Reginaldo
December 3rd, 2008 at 11:19 pm
i cant send
Florin is the hero that builds this amazing thing 
i like it assembled because i have actuallx no wielding station … broken sh** … so please complete it for me 
December 3rd, 2008 at 11:22 pm
i ment soldering station … sorry .. i am german and my englisch is not the best
December 3rd, 2008 at 11:57 pm
Okay Phil, I understood
December 4th, 2008 at 12:59 pm
Phil what I mean is that I want this project of the audio spectrum analyzer
December 4th, 2008 at 1:21 pm
Reginaldo if you want to buy one, it will be available in aprox. 1 week
December 4th, 2008 at 3:08 pm
Ok just let me know when and how can I buy one
December 4th, 2008 at 3:10 pm
Thanks Florin and I am sorry my English in Brazil
December 4th, 2008 at 5:38 pm
Okay Reginaldo
December 4th, 2008 at 6:29 pm
Florin,
Are you in the USA? i’d like to buy the spectrum analyzer because i run a DJ and it looks awsome, please let me know how can i get one, if you could build one for me how much? I live in Houston Texas,
Regards,
Luke
LUKZTER AT HOTMAIL DOT COM
December 4th, 2008 at 7:13 pm
The original Audio Spectrum Analyzer is now available on a KIT or as semi-assembled or as a pre-assembled (complete) unit. You can purchase it from the Author (George Adamidis). Contact sv7fid@yahoo.gr
Prices for a complete unit:
Main –board – 100Euros
Led –Bar Display 50Euros
5V Power Supply – 15Euros
December 4th, 2008 at 8:23 pm
lukzter i live in Romania but i can ship to USA. Price is 100 USD
December 5th, 2008 at 12:59 pm
This may sound dense but I have limited knowledge when things require coding! Will I need to program this to work?
December 5th, 2008 at 1:05 pm
David, i will ship the boards already programmed, so don’t worry about that, and if you want it fully assembled, it’s just a matter of turning it on.
December 5th, 2008 at 1:14 pm
Thats good, are you offering a reduction in price if you send them out in kits or is it 100USD for either?
Is it possible to swap the LEDS for larger ones and maybe have them in sets of 3 wide say? I want to turn it into a large wall display….
December 5th, 2008 at 4:09 pm
At the moment I’m doing the assembling for free, so yes it’s 100 $ for either, because if I would charge for assembly the price would probably go up 10-15 $.
It is possible to create a display as large as you wish, but that would change the hardware too, and it would be allot more expensive.
December 5th, 2008 at 4:40 pm
Fair enough, I will take a kit off your hands then! I quite enjoy the soldering so i’ll take one unassembled.
How do I go about arranging this?
Many thanks
December 5th, 2008 at 4:43 pm
I’ll get back to you, when I’ll have the kits ready for shipping. At the moment I’m waiting for the PCB’s. Take note that most of the parts are SMD, so it’s not easy to solder them.
December 5th, 2008 at 4:44 pm
Not a problem! I’ll keep watching for you to announce when they are ready then!
Thanks
December 5th, 2008 at 5:36 pm
Out of curiosity how do you upload the code? Do you do it when its on the board or plug the chip into something?
December 6th, 2008 at 1:22 pm
The programing of the ATmega64 is done trough ISP (in system programing). I first solder the chip on the board, then I connect my programming device to the board trough a 6 pin connector and i program it.
example of programing device AVR ISP MKII
December 19th, 2008 at 1:20 pm
update to the project posted
http://www.youritronics.com/20-band-audio-spectrum-analyzer/
December 27th, 2008 at 4:05 pm
update to the project
http://www.youritronics.com/20-band-audio-spectrum-analyzer-firmwire-v13/
January 1st, 2009 at 7:57 pm
how do I get one of these kits (if there is one available)? When I go to the store there are no products available?
Sorry for such a basic question, bit of a newb.
January 1st, 2009 at 8:06 pm
Joe, it’s my fault for the shop
, I haven’t got time to set it up. You can get a kit , in fact I’ll be shipping them from 5′th of January. I will post update, so check http://www.youritronics.com for updates. First orders will be made by email, and then as I’ll have more free time i will set up the shop.
February 28th, 2009 at 11:15 pm
hey guys…. what pic could be a replace for this pic30f6012A… just a question cause i wanna try to build this cool thing but i wanna know if r a replace for the pic cause is very difficult to find this pic in the market… if someone know pleace reply jeje thanks and very nice job!!!
June 22nd, 2009 at 12:40 pm
[...] this one is *very* nice : LED Bar Audio Spectrum Analyzer | YourITronics [...]
January 17th, 2010 at 7:39 pm
Hy dude
Where is PCB? I want make it, can you get me that pcb?
Please
Where i can download it?