How to Build Your Own Bluetooth Speaker for Under $15


Building your own Bluetooth speaker can be a fun and rewarding project. With just a few inexpensive parts, you can make a speaker that sounds great and can connect wirelessly to your phone or tablet. In this guide, I'll walk you through the entire process step-by-step.

What You'll Need

Here are the components you'll need to build your own Bluetooth speaker for under $15:

That's it! With just these few affordable components, you can build your own wireless Bluetooth speaker. The total cost should be less than $15.

Step 1: Prepare the Speaker Enclosure

The first step is to prepare the plastic enclosure that will house the speaker.

Now the enclosure is ready for installation of the components.

Step 2: Install the Speaker

The speaker is now installed and wired up. The hot glue creates an airtight seal for better bass response.

Step 3: Install the Amplifier Board

The amplifier board takes the low-level audio signal from the Bluetooth module and amplifies it to drive the speaker.

-Mount the amplifier board to the enclosure using hot glue or screws. I prefer hot glue as it absorbs vibration.

-Solder positive (+) and negative (-) wires from the amplifier output to the corresponding speaker wires.

-Solder additional wires from the amplifier input terminals to the Bluetooth module.

-Connect the power wires from the amp to your battery pack.

Use the diagram on the amp board to determine the correct wiring layout. Getting the polarity right is crucial.

Step 4: Install the Bluetooth Module

The Bluetooth module will allow you to stream wireless audio from your phone, tablet, or computer.

Now you can send audio to the speaker wirelessly from a Bluetooth-enabled device like a smartphone!

Step 5: Power the Speaker

And that's it - you now have a fully functional wireless Bluetooth speaker you built yourself for less than $15!

Usage Tips

Here are some quick usage tips for your DIY Bluetooth speaker:

Customization Options

Part of the fun of DIY audio projects is customizing them to suit your needs:

So feel free to tweak the design to build the perfect Bluetooth speaker for your needs!


Building your own Bluetooth wireless speaker is an enjoyable, budget-friendly project. In just a few steps, you can construct a great-sounding speaker for under $15. All you need are a few basic electronic components, some DIY skills, and a little bit of time. Not only will you save money, but you'll also have the satisfaction of creating your own gadget. So grab those parts, fire up the soldering iron, and start building your own Bluetooth speaker today!