Picture of DIY Bluetooth Speaker
Meet the PartyBar™! Make a wireless speaker, loud enough to fill an entire room! With a budget less than $15, you can have your own Bluetooth speakers made from scratch materials! It's slick, stylish, descent and most of all it's compact and fits in your pocket. This is a great weekend projects for enthusiasts and audiophiles.

It's small but packs quite a punch. With the help of "35mm Neodymium Drivers" the PartyBar™ delivers a solid stereo sound. It's equipped with a 1000mAh Li-ion battery meant to last for 9 straight hours, replacing it with a 2,400 LiPo will result to a staggering 22 hours of continuous playback!

Are those ready made speakers?
A lot of people thought that this was a ready made product, well it's not. It's actually made from recycled materials such as broken speakers, radios & old modules. The project box came from my eyeglass's container :D

Techie Description:
The PartyBar™ is equipped with two outstanding Neodymium Speaker drivers. Neodymium itself is a rare-earth metal. Magnets made from neodymium are light and very powerful, making the speakers more compact and gives a higher clarity rate.

Of course good speakers must be powered by good amplifiers thanks to Nsiway's NS4263 dual 3W SMD chip, the PartyBar™ delivers an excellent audio, good enough to compete in today's market. It has a class AB amplifier with a THD rating of 0.1%. A Class AB amplifier delivers fully symmetrical wave amplification, in short the audio given off by this amplifier is pure and clear.


- 1,000 mAh Rechargeable Li-ion Battery (9hrs Playback)
- Dual 3W (4ohms) 35mm Neodymium Drivers
- High Efficiency 2x3W Amplifier (0.1%THD)
- 15 meter Standard Bluetooth Range
- 3.5mm Auxiliary Ready
- Mini USB Charge Plug

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plal75 made it!8 months ago

wanted to make something like this for long..thanks ASCAS!!

Have used parts from the link, used an acrylic perfume box as case :)

There is a small problem though..there is a background noise, quite audible when song is playing at low volume/ silence in the song..Please help!!!!



It is possible to have a shema? I don't understand the connections with the modules you advice In

The capacitors 104 have it mate sense ? where they must trendy ?



It is possible to have a shema? I don't understand the connections with the modules you advice In

The capacitors 104 have it mate sense ? where they must trendy ?


ASCAS (author)  plal758 months ago

That's an awesome build. Have you tried connecting a 10uF Capacitor to both lines channels?

plal75 ASCAS8 months ago

Nope :( ...have used a 104 (0.1uF) as you had in your pic. Should I try a 10uF instead at each channel's input?

Thanks for your response, appreciate it :)

TheRedFez1 year ago

You show 104 capacitors in the pictures, but do not list them in the wire diagram, I'm assuming they go on the power leeds?

ASCAS (author)  TheRedFez1 year ago

Both 104 go to each channel's input. It acts as a simple low pass filter.

great idea using a glasses container!

tecnocroco made it!8 hours ago
Nice Instructable! I did it with a battery of 4800 mAh and using the BluetoothUSB. It works fine but there's a problem. I csn hera a "piiiii..." when the volume is low or when the music is paused. I should put a vapacitor or a resistor? There's amplifiers with more efficiency (power)?

hello everyone, i'm trying to do this bluetooth speaker but i think i need a schema to wire all the components together and i don't know where i can find a bluetooth microchip, plus i don't know if a metal box is good for the sound ... :) Can someone help me !! Thanks and well done the result is great !

JohnM6824 days ago

What guage wire is everyone using for their connections? Thanks!

it's about 1mm dia. I used old headphone wires for running battery from one ear to the other, including speakers. I used possibly 1mm dia coming from the mini-usb charger module's pos and neg, amp module's pos and neg, including amp's L, gnd, R speaker wires for the Bluetooth. You'll have to connect Bluetooth module to a larger Pcb then connect amp and power to that. Or tabs will break off.

The amp requires 3.6v - 5.5v (4.55v typical) power supply and the Bluetooth requires 1.7v - 1.9v (1.8v typical) power supply 5.3v min to 7.4v max (6.35v typical) which means this system requires TWO 3.7v batteries, not one as in this design. I can see why this build has had problems. It's important not to forget the basics of power supply. You can build the best unit and if you don't have the correct power supply it will not work properly.


I've build this speaker using the usb bluetooth module (5V), and the amp which of the pringles speacker (originally powered by 3XAAA - 1.5*3=4.5V). note: I've put a larger speacker on that.

In my build I can power the system with 14500 battery (3.7V) or by mobile phone charger (5V). In both ways (using the aux cable) the system works poperly. But when bluetooth module is used, the speaker starts doing lots of noise (since the mobile is paired - before there is almost no noise). Searching on internet I' ve found that this could be caused by a ground loop(I don't know what this is), because the system is powered only by one battery. is this the problem you where thinking about? anyway they suggest different option:

1 - use two indipendent power supply ( two battery, as you said - not in series and not in parallel, two separate circuit - am I right?). this would surely solve the problem, because I've tried to use the bluetooth reciever powered by mobile phone charger and the amp powered by the battery, and all worked just fine

2 - use a ground loop isolator

3 - use a DC to DC isolated converter

I think that 2 and 3 solution are a bit overkill for this project, isn't it?

so what would you suggest? thanks in advance for the attention


If it's a ground loop problem, it would
create a low mains frequency hum. Given the size of the speaker, this is
not likely to be the problem. If however it is noise you are hearing
(crackling, distortion or higher frequency noise). I suspect it might be
because when you are powering it from the mobile phone charger you are
giving the bluetooth module a higher voltage and it doesn't like being
driven by 3.7v off the battery.

You can check this out by driving
both together from the phone charger or try using the 3x non-rechargeable AAA speaker batteries or 4xAAA/AA rechargeable batteries instead
of the 3.7v 14500 battery

If the noise disappears, you know it's
the voltage being too low. There is the slight danger that you might
output too much voltage to the speaker, but I doubt it as 3x non-rechargeable aaa
batteries will often provide over 5v when new.

If that is the case
and it works fine at the higher voltage, you could try using 4xAA NiMh
batteries to run both which should give you 5v instead. These are also easier to
charge using a current limiting resistor and are cheap and cheerful,
although slightly heavier than the 14500. NiMh AAs have a much better
capacity than AAA rachargeables.

Good luck and I hope you sort it.


Yes, I let ASCAS know that I will be posting my bluetooth project in my tutorial with clearer diagram.

This schematic is a ruff design and unclear to the many connections of the modules and capacitors, however this idea encouraged me to pursue this bluetooth project. Thanks ASCAS. If it helps, I will setup a clearer tutorial for what I did in space.

I actually used my son's batman headphones and squeezed all the modules and the battery into it. Man is it loud, now it can be used as a headphones or a party speaker system. I was able to squeeze the BL-5C 2500 into one ear.

Note: I found that connecting the charger directly to the battery will cause a static sound if listening while charging. But, clear listening if not charging.

PuiG made it!2 months ago

this is mine !


What gauge wire did you use? Did you have to use any resistors? I am new to this and would love any help!

its 24 AWG and I did not use any resistor

nrshreyas25 days ago


can u please tell me the connection between the bluetooth module and the aux connector

nrshreyas1 month ago

hello there

i am not a understanding the connection between the aux and the bluetooth module can u please help me out in this problem

brent.groff1 month ago

Is there another type of battery that I can use because the website says it's sold out?

stubnosec361 month ago

Can see a clearer diagram?

What capacitors are you using and where are they connected to?

charged/charging light connect to the switch, how is this set up connected?

Do we need the switch and the 3.5mm jack?

dns22321 month ago
Hello.. I am beginner.. I never made anything like this before.. but seeing this i want to make it. I just wanted that if you could show the connection of each part more clearly..? I mean what wire to soldered where and where to connect. Please. It would be of help. Thanks ASCAS.
tikka882 months ago

im building one with 2x 5v 3+3w amps, 4 x 2" 5w speakers. A solar panel and a 12000mah lipo. Got good isnpiration from this instructable. looks really good. now if the damm parts would come from china..

findley_tyler2 months ago

Did you use the HC-06 bluetooth module? is the L and R referring to TXD and RXD?

mark.mailhot6 months ago

now correct me if im wrong but i think the switch gets wired in like so and the bluetooth and AUX just get kind of soldered in junction with each other. {sorry for the lack of color)

ASCAS (author)  mark.mailhot6 months ago

Oh, that's what I did it although I forgot to illustrate the switch on the diagram.

niccotaglia ASCAS2 months ago
I never used a soldering iron,how can I make a bluetooth speaker out of my wired AA battery powered speaker?
Also,can I make it lithium battery powered? It runs on a 4,5 V power
Thanks in advance
jean-lucG ASCAS5 months ago

hi Ascas,

Can you tell me wich bluetooth module did you use ?

Thank you


Now you have a lot more experience at electronics then I do, could I replace the amp and speakers with a FM transmitter? Or would it now work well?

hi, Mark.mailhot,

Thank you for the diagram. As i don't know a lot in electronics.

Can you explain me wher do you connect the speaker +/- on the bluetooth module ?

The R1 and R2 on your diagram are the one from the module (TXD and Key)

Thank you


For the +/- you have to look it up via Google or the manufacturers site as it is usually different. Maybe post a picture of what module your using


Thank you Mark, i have googled it and find that there are 36 pin on the BT module (green chip on the picture) the audio chould be in 9/10 for L&R (i presume also ground) but not sure yet as i'm using a HC-05 (as i wanted to change the device name from an arduino - in AT mode and it works).

And i thougt that i could connect the speaker directly to one of the 6 big pin.

Here is a picture.

Do you have any idea on how to connect to the amp (audio in)

Thank you.


Hi JLuc sorry to say but as far as I'm aware the hc-05 is not for audio

what amp module are you using?

well as i look back i realize that i miss labeled R1 and R2. the R was supposed to be "resister" but i notice that the line filter is a disk capacitor, so it should be C1 C2. which are on the + audio lines left and right. the blue tooth module may only have one - output.


I wanted to use a PAM8403 amp like the one of this picture.

(I don't understand where do you put the 2 capacotors and what value).

Thank again.

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