The Smallest DIY Bluetooth Speaker You've Ever Seen

If you want a tiny Bluetooth speaker for your desk, or are working on a project that requires one, then you need to see Gadget Industry’s latest creation. It’s not likely to be the world’s smallest, as it is called, but it would be hard to come across one much smaller all the same. Despite the tiny size of this build, it would be reasonably easy for anyone with a little soldering experience under their belt to reproduce.

The circuit is built around commonly used modules, so it is not particularly complicated. However, these modules are far too large to fit inside such a small package. So, Gadget Industry desolders the components from each, then reforms them into much more compact shapes. For starters, a 3W Bluetooth amplifier module was disassembled. The PCB antenna was cut off of the board, then all of the components were stacked up on top of it before being rewired by hand.

That hardware was then adhered to the back of a 3W speaker, measuring just 18x14mm. Next, a TP4056 charging module was given the same treatment. Once reassembled on top of the growing (but tiny) circuit, a 60mAh rechargeable LiPo battery was wired to it. Finally, a power switch was added to the device.

Rather than 3D printing a case, Gadget Industry took a different approach that gave the speaker a more unique appearance. A thin sheet of epoxy resin was poured and allowed to dry. Once ready, it was sanded to give it a cloudy look. The sheet was then cut into pieces, and holes for the speaker were drilled into one of them. After this, the pieces were glued together into a cube, with the hardware enclosed within.

The final result may be tiny, but it works just like any other Bluetooth speaker. Gadget Industry turned it on and demonstrated it playing music streamed from a nearby phone. Be sure to give the video a close watch if you are thinking about making your own little speaker.