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Picture of DIY Bluetooth Speaker
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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.

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Specifications:
- 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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Step 1: Parts & Materials

Picture of Parts & Materials
The links are just alternatives. Read the next step and find out how I got my parts for under $15 :))

Parts & Materials:
- Stereo Bluetooth Module (Updated: $6 Cheaper)
- 2x3W Speakers (Updated: Now Priced $2.80)
- 2x3W High Efficiency SMD Amplifier
- Passive Driver (optional)
- USB Li-ion Charging Module
- 1000mAh Li-ion Battery
- Simple Sliding Switch
- 3.5mm Stereo Jack
- Eyewear Container
- Matt Black Spray Paint

Tools & Equipment:
- Cordless Drill (w/ 5mm Bit)
- Rotary Tool (w/ Flute Bit)
- Leatherman Multitool
- 40W Soldering Iron
- Hot Glue Gun
- Super Glue


Step 2: Hacking Time! - How I got my parts for free!

Picture of Hacking Time! - How I got my parts for free!
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That Is An Awesome Case! Where Did You Get It?
My dad is an eye doctor & surgeon (ophthalmologist). Since I'm a guy who uses corrective lenses, I have a huge pile of unused eye-wear containers. One day I came across this funny, Garfield case (from my grade school days). The first thing that poped-up in my mind was to make a Bluetooth speaker out of it.

Where I Got My Speaker Drivers:
Okay let's get started! To start of, I got these awesome "Speed-Boat Speaker" for a cheap price of P320 ($6.50). Of course cheap products aren't that reliable, it broke after 6 months. Since I'm a hobbyist, I prefer breaking down defective products and studying the parts instead of surrendering it to the warranty center.

If you want to buy better ones, PartsExpress.com serves a wide variety of options!

Where I Got My Amplifier:
I got my amplifier from DealExtreme (dx.com). Apparently it's a discontinued product. I got it for $1.70 on a clearance sale.

Where I Got My Bluetooth Module:
I bought my Bluetooth module from DealExtreme (dx.com). Again, my Bluetooth model was discontinued and no longer available. I got it for $6 on a clearance sale. Right now there's an alternative model but costs more than the previous one ($12).

Isn't this just a repackaged project?
No it's not! The speaker drivers inside the "boat speaker" was indeed good but to be honest, it didn't come with the best built in amplifier. It was made from bare SMD transistors and not a SMD I.C. package, it was not that effecient, and lacked power to drive off these 4 ohm speakers.

Step 3: Drilling The Holes For The Parts

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1st.) Use your pencil to mark the soon to be cut holes.
2nd.) Get your rotary tool and flute bit, cut off the plastic on where the speakers will be mounted.
3rd.) Attatch a 5mm bit to your cordless drill and bore a hole for the auxiliary input.

Step 4: Painting The Case

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Before mounting the speakers and components be sure to paint the case first. You don't want to spray paint over your drivers

Looking good on a matt black paint job! :D

Step 5: Hot Gluing The Speakers & Components

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Carefully hot glue the speaker drivers to your plastic casing. Be sure to cover all the gaps, it must be 100% airtight. If air escapes the case, the "PartyBar" would sound like crap :D

If you are concerned that the hot glue could melt because of the heat given off by the amplifier module. There's nothing to worry about since the "class AB high-efficiency amplifier" doesn't heat up that much.

Step 6: Soldering Them Together

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Solder all the modules together. This project requires a little experience in electronics. If you need help, feel free to write a comment!

To make your work easier, you can follow the block diagram above.

Step 7: Sealing The Enclosure

Picture of Sealing The Enclosure
Apply enough superglue around the edges to seal the enclosure. Be sure to cover all the gaps, it must be 100% airtight. If air escapes the case, the "PartyBar" would sound like crap :D

Step 8: You're Done!

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Enjoy your PartyBar!

Step 9: Meet The "Version 2.0" (SUPERCHARGED)

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Meet AirJam, the DIY Supercharged Bluetooth speaker. Ready your tools, we are making one from scratch! Thanks to your comments and suggestions, I was able to make a v2.0, named AirJam.

Click Here To Visit: DIY Supercharged Bluetooth Speaker (v2.0)
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SMALL SIZE, BIG SOUND:
Despite AirJam's tiny size, it has the ability to surpass its competitor's performance. Thanks to the sandwiched speaker orientation, I was able to fit 4 Full-ranged speaker drivers in one tiny enclosure (2x7x2"). A "passive radiator" was added to extend the lower bass frequencies, thus resulting to a much punchier bass. Compared to its rivals, the AirJam has 4 active drivers and one passive radiator, offering deeper bass and wider mids.

CHANGE TRACKS WIRELESSLY (works with Siri!)
Thanks to Bluetooth 4.0, AirJam can receive Bluetooth transmissions up to 30 meters! Whether you are using your laptop, tablet or phone, you can easily switch tracks wirelessly. The handsfree feature works great with Speakerphone, Skype, FaceTime and also Siri!
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Specs & Features:
- Includes Handsfree Microphone (Speakerphone Function)
- Quad 3W Fullrange Speakers (4Ω - 35mm drivers)
- Quad 3W High Efficiency Amplifier (class AB)
- Li-Po Battery 1,300mAh (20hrs Playback)
- Command Buttons (Volume/Pause//Play)
- Tested dB (via SPL): 96dB @2ft
- 30m Bluetooth Range (v4.0)
- Single Passive Radiator
- 3.5mm Auxiliary Ready
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plal75 made it!7 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!!!!

BT1.jpgBT2.jpgBT3.jpg

hello,

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

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

Thank

hello,

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

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

Thank

ASCAS (author)  plal757 months ago

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

plal75 ASCAS7 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!

nrshreyas6 days 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

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

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.

hello,

I've build this speaker using the dx.com 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

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stubnosec3624 days 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.
PuiG made it!1 month ago

this is mine !

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ANYBODY WHO CAN MAKE A SCHEMATİC DİAGRAM ...TO GET MORE EASY TO UNDERSTAND TO THE PUBLİC...THANKS İN ADAVNCE......SPECİALLY İN BLUETOOTH RECEİVER TO AMLİFİER.. AND BE SPECİFİC TO THE CONNECTİON WHERE İT GOES..THANKS

tikka881 month 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..

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

mark.mailhot5 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)

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ASCAS (author)  mark.mailhot5 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 ASCAS4 months ago

hi Ascas,

Can you tell me wich bluetooth module did you use ?

Thank you

JL

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

JL

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

Hi,

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.

JLuc

image.jpg
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.

hi,

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.

image.jpg

you put the capacitors between the blue tooth +audio out (one for left and one for right) for the size of capacitor should be a 10.4uF disk capacitor

Thank you, but here is my problem.

I don't find the bluetooth +audio out, is it the same as PCM Out

And for the - it's ground ?

I found this illustation, it' the BT module only

Thank you

JL

image.jpg

so after some research I find that I don't think this is a Bluetooth audio module their for I don't see any audio out in any information.

hi Mark.

Oups that's not a good news.

I took this module as i could change the name and password with the AT mode using an Arduino.

I should have look the ausio connection before buying it.

But in this tutorial pictures the bluetooth module look very similar...

Than you

niccotaglia2 months ago
I already own a wired AA battery powered speaker,how can I add bluetooth without changing the case? I also have an old bluetooth mono headset,can I use it to add bluetooth?
EpicVertigo2 months ago

Hi! First of all - this project and 2.0 project are super awesome!

But how you control the battery charge? Is there any thing that can detect/show current battery charge? Thanks

Barry_L2 months ago

**PASSIVE SUBWOOFERS FOUND!!** Hey guys, if anyone's looking for passive subwoofers, I've made a list of them, as well as other rare/useful components on my Instructable on my page. Enjoy :)

wl.richards2 months ago
Could I just add the bluetooth module internally to set of powered monitors?
oka16 made it!2 months ago
cool speaker
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hello,

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

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

Thank

1-40 of 304Next »