DIY Bluetooth Speaker Using Cardboard

In this DIY project, we will make a Bluetooth speaker using cardboard. This low-cost project is perfect for beginners and students. It is lightweight, portable, and gives good sound for its size.

Materials Required

• Bluetooth audio module

• Small speaker (4Ω / 5W)

• Audio amplifier module (PAM8403)

• Cardboard box

• Rechargeable battery (18650)

• Charging module (TP4056)

• Power switch

• Wires & glue

Working Principle

The Bluetooth module receives audio wirelessly. The amplifier boosts the signal and sends it to the speaker. Cardboard works as a sound enclosure to improve audio output.

Steps Overview

1. Cut cardboard box and make speaker hole

2. Fix speaker and modules

3. Connect battery and charging module

4. Pair Bluetooth and test sound

Applications

• Mobile music speaker

• Study table speaker

• School DIY project

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⭐ Reviews

⭐⭐⭐⭐⭐
Easy to build and works great for small rooms.

⭐⭐⭐⭐☆
Good sound quality considering cardboard material.

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💬 Questions for Comments

1. Did you try this Bluetooth speaker project?

2. What speaker size did you use?

3. How was the sound quality?

4. Do you want a wooden version tutorial?

5. Should I share PCB layout for this project?