How to Build a DIY Bluetooth Speaker for Under $20


Building your own Bluetooth speaker can be a fun and rewarding DIY project. With just a few inexpensive parts, you can make a decent-sounding portable speaker in under an hour. In this guide, I'll walk you through the entire process step-by-step and show you how to build one for less than $20.

Parts Needed

To build the speaker, you'll need just a few basic components:

Assembly Steps

Follow these steps to assemble your DIY Bluetooth speaker:

1. Prepare the Enclosure

Cut holes in your plastic enclosure if needed - one for the speaker driver and one for the power switch and charging port. Sand and paint the enclosure if desired.

2. Mount the Speaker Driver

Attach the speaker driver to the enclosure using hot glue or screws. Make sure no air leaks around the edges.

3. Connect the Bluetooth Module

Solder positive and negative wires from the speaker driver to the Bluetooth module. Pay attention to polarity.

4. Connect the Battery

Solder the battery's red wire to the Bluetooth module's positive terminal and the black wire to negative. Add a power switch if desired.

5. Final Assembly

Mount the Bluetooth module and battery inside the case using hot glue. Seal up the enclosure and add rubber feet if needed.

That's it! Now you should have a working Bluetooth speaker for under $20. Power it on, connect your phone, and start listening to tunes wirelessly.

Customization Options

Here are some ideas for customizing your DIY speaker:

Troubleshooting Issues

If your DIY speaker isn't working, here are some things to check:


Building your own Bluetooth speaker is a rewarding, budget-friendly project. With a few basic parts and some DIY spirit, you can make a decent portable speaker for under $20 in just an hour or two. Customize it to suit your style and enjoy the satisfaction of creating something yourself! Let me know if you have any other questions.