DIY Bluetooth Speaker: Easy Build Guide
2026-05-15 13:20:48Mr.Ming
If one is interested in DIY Bluetooth speakers, they may refer to this article.
If one happens to have a passive small speaker and a pair of 18650 batteries connected in parallel, one may suddenly come up with the idea of converting this small speaker into a Bluetooth speaker.
If one also has a PAM8403 amplifier board and a TP4057 hand-soldered charging board, once all materials are prepared, production can begin.
Holes can be cut using an electric drill and a hacksaw blade.
If the original bass speaker is not satisfactory, it can be replaced with a 4-inch Sanyo full-range speaker.
Charging in progress.
Completed. The process is still very simple. Although the workmanship is rough, it works quite well.
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