Make Your Own Simple & Cheap Portable Bluetooth Speaker

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Introduction: Make Your Own Simple & Cheap Portable Bluetooth Speaker

About: Awesome Electronics Tutorials, Projects and How To´s

In this project I will show you how to build a simple portable bluetooth speaker that can play its tunes up to 30 hours continuously. Most of the used components can be found for only 22$ in total which makes this a pretty low budget project. Let's get started!

Step 1: Watch the Video!

The video gives you a good overview on how to create a portable bluetooth speaker. In the next steps though I will present you additional information so that you can create this project easily as well.

Step 2: Order Your Parts!

Here you can find a parts list with example seller for your convenience:

Amazon.com:

2x Li-Ion Battery: http://amzn.to/2eUuthD

1x Bluetooth board: http://amzn.to/2eUrCp1

1x SPDT Switch: http://amzn.to/2fJI5ek

1x TP4056 board: http://amzn.to/2eucBvk

1x Micro USB Breakout: http://amzn.to/2fw3nvH

1x MT3608 Boost Converter: http://amzn.to/2g3hjRX

1x RGB LED: http://amzn.to/2eQgQgl

Ebay:

2x Li-Ion Battery: -

1x Bluetooth board: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x SPDT Switch: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x TP4056 board: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x Micro USB Breakout: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x MT3608 Boost Converter: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

1x RGB LED: http://rover.ebay.com/rover/1/711-53200-19255-0/1?...

Amazon.de:

2x Li-Ion Battery: http://amzn.to/2eUzhDP

1x Bluetooth board: http://amzn.to/2eUto9y

1x SPDT Switch: http://amzn.to/2eUxqyK

1x TP4056 board: http://amzn.to/2eUvMNO

1x Micro USB Breakout: http://amzn.to/2eUtzSu

1x MT3608 Boost Converter: http://amzn.to/2eUzFCh

1x RGB LED: http://amzn.to/2eUB5gb

Step 3: Build Your Enclosure!

Here you can find the .dxf file that I created with the LibreCAD software or you can simply use the attached .pdf files to print out the templates that I created.

Step 4: Do the Wiring!

The wiring is rather simple to begin with, but here you can find a couple of pictures on how the insides of my bluetooth speaker look like. Feel free to use them as a reference.

Step 5: Success!

You did it! You just created your own portable Bluetooth Speaker!


Feel free to check out my YouTube channel for more awesome projects:

http://www.youtube.com/user/greatscottlab

You can also follow me on Facebook, Twitter and Google+ for news about upcoming projects and behind the scenes information:

https://twitter.com/GreatScottLab

https://www.facebook.com/greatscottlab

3 People Made This Project!

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3 Questions

Hi,

Im doing a final project for my engineering class in high school and i was wondering if you could help explain this more and go into to more detail like a step by step thing. And also what tools are needed for this project.

Thanks so much

Anyone know what types of speakers were used here? (watts etc.) Because those dont look like 3W speakers and the board has 3W speaker ports.

How to connect rgb to tp4056?

41 Comments

has anybody had any problems with the battery charger board

the ones i have seem to trip the overcharge when switching on when using the batteries but it is ok when i use a 5v mobile phone charger

1 reply

I got a problem as well. When I turn on the speakers with the power connected they work. When I disconnect the power, they keep working. But when I turn on the speakers with no power connected the voltage is much lower and the bluetooth board does not turn on.

Can you charge up the rechargeable batteries with an external solar power pack like the ones for charging phones

I made this but when I increase the volume about 90% to 100% the speaker stops working and the light on the Bluetooth board get off and the music stops.what can be the problem?Pls help me

which resistor did you use on the led. Thanks

if I wanted to add tweeters, would I need another amp and more battery power? If so what do you suggest. Thanks

Hello Scott! Another great project! Thank you!
I have a question about the very loud voice, which screams at me every time at the start! Is there a way to turn this off or to make it at least quieter?
Many Thanks!

Great project !! I am currently doing it so thnak you for this great tutorial. I had just a problem for soldering the battery together (dangerous, no spot welding etc...) so I buy this case holder. I hope it will be fine, but at least it's not dangerous ^^

Thank you again ! It's my first DIY project and it's thanks to you =)

battery holder parallel.jpg

great project!!

temp_1211815886.jpg

hi,

I am using pam8403 module to drive two 4ohm 3watt speakers using a 2200mAh Li-ion battery but when I increase the volume around 75 to 80% on my phone the sound starts to cut off (speaker cones move in and out extremely during the time),and when I increase the volume further it becomes worse and sounds p p p pp ppp p ppp p p... I cannot understand what is the problem, could it be because there is no enough current ?,I also tried a 2 amp 5v dc input from a fast charger of my phone but same is the case

please help me with this.

1 reply

I belive the problem may be your speakers, I saw a guide that suggested having speakers with double the wattage rating of your amp.

The amplifier on the bluetooth board you are referring to serves an entirely different purpose than the boost module. The amplifier 'amplifies' the audio signal so it can be played over passive speakers.

However for this project, he is using the boost module to regulate (ie. control) the voltage coming from the lithium batteries to always be 5V. The bluetooth board has specified input voltage of 5v so the regulation is necessary for proper operation as well as to protection. Going over the specified input voltage could fry the bluetooth board! Hope that made sense

However, the specifications of the board from Amazon state

Power: 2.1 interface 8-25v DC power supply

So anything between 8 and 25v should be ok, right? So if 4 lithium batteries of 3.7v are used in series, this should work without boost converter? And if a booster module were to be used, am I wrong to think that putting the batteries in series would be beneficial as the voltage is already closer to the target voltage? Or does is this not important/negligible?

why the mt3608 and not the xl6009 module???

Hey there Great Scott, i got one of these boards and trying to re-create this project. Do you know if there is any way to increase the sound output as its not very loud?

Hey GreatScott,

I'm planning to build a more advanced version of this speaker, but I like to get some help on the design and on the speakers.

In the attachment you can find my circuit, the design is based on yours and that of Barry_L (https://www.instructables.com/id/Simple-10w-Bluetoo...)

These are the electrical components I would like to use (besides the speaker units and batteries which I already have):

3.5 mm board http://www.dx.com/p/3-5mm-audio-jack-to-dip-adapte...

Protection Board http://www.dx.com/p/tp4056-4-2w-1-2a-5v-lithium-ba...

Bluetooth Module http://www.ebay.com/itm/Bluetooth-4-0-CSR8645-Ampl...

Extension Board http://www.dx.com/p/micro-usb-5v-power-adapter-soc...

Switches for music control http://www.dx.com/p/diy-6-x-6-x-10mm-slightly-touc...

PAM8406 http://www.dx.com/p/2-x-5w-pam8406-digital-amplifi...

Microphone http://www.ebay.nl/itm/Microphone-electromagnetiqu...

On/off Switch http://www.dx.com/p/cs14a02-diy-2p-round-shape-on-...

Led http://www.dx.com/p/jtron-5mm-4-pin-rgb-full-color...

Input switch http://www.dx.com/p/3-pin-slide-switch-diy-parts-r...

Step up module http://www.ebay.nl/itm/MT3608-2A-DC-DC-Step-Up-Pow...

(I'm also planning to add a NFC tag and two passive radiators) Do you have any suggestions on how to improve this design?

Secondly I sort of have a problem with my speakers, the units are magnetically shielded, just like yours seem to be (this is done so there is no interference with crt screens). This makes the speakers pretty heavy and also large. Do you know how to remove this shielding or do you know a better place to find a way how? (google didn't serve me well)

(Deleted previous comment to fix the links)

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