Wooden Bluetooth Speaker

SUPPLIES LIST


The materials, electronics and supplies listed below will provide you with everything you need to build the wooden Bluetooth speaker.

Electronics

Item Qty Link
PAM8403 2 x 3W Power Amplifier with Potentiometer 1 https://amzn.to/3Txit6q
M18 2-Channel Bluetooth Audio Receiver 1 https://amzn.to/3eC1twX
Speakers - 3W, 8 Ohm, 50mm [2 in ] 2 https://amzn.to/3yNMtCZ
82 Ohm, 0.5W Resistors (Pack of 100)* 1 https://amzn.to/3T42JIf
Assorted 0.5W Resistor Kit, 0.1-10M ohm (860pcs)* 1 https://amzn.to/3eEasO1
Latching Power Switch, 12mm [1/2"] 1 https://amzn.to/3gcKZf3
2-Pin Screw Terminal, 5mm [0.2"] pitch 1 https://amzn.to/3MDZy7H
USB type C PCB connector 2 https://amzn.to/3TuODiS
Two core speaker/power cable, AWG 24 or higher (< 24 = higher) 1 https://amzn.to/3CFKEct
Three core cable/hookup wire, AWG 25 or higher (< 25 = higher)** 1 https://amzn.to/3eH5akU
10,000mAh USB Power Bank (the one I used) 1 https://www.aliexpress.com/item/4001326872238.html
10,000mAh USB Power Bank (Amazon alternative, untested) 1 https://amzn.to/3gyvQ7S
Short USB-A Male to USB-C Male Cable (this one I used) 1 https://s.click.aliexpress.com/e/_Dnb60RZ
Short USB-A Male to USB-C Male Cable (Amazon alternative, untested) 1 https://amzn.to/3TDb7OG
Veroboard (Stripboard) 1 https://amzn.to/3SdtrwK

* An 82 Ohm load resistor works with the suggested USB 10,000mAh power bank above to keep it out of sleep mode (since the Bluetooth circuitry does not draw enough current). If you use a different USB power bank, good to have an assortment of resistor values on hand. The additional current draw won't make much of a difference with the battery life. Be careful with power ratings if you use 0.25W resistors, might need two in series. P=VI, where P = Power, V = Voltage (5V), I = Current. I=V/R, where R = your resistor value.

** You can twist three individual wires together to make a cable like what you saw in the Bluetooth speaker video.

Hardware and Supplies

Item Qty Link
Pan head screws – 12mm [1/2”] (Size 6#/6G) 10 https://amzn.to/3S63D5u
Wood screws, countersunk – 18mm [11/16”] (Size 6#/6G) 4 https://amzn.to/3Vsd821
Superglue 1 https://amzn.to/3CGGSiK
Two-part epoxy 1 https://amzn.to/3TpfE75
Titebond III Woodworking Glue 1 https://amzn.to/3AktLnQ
Danish oil 1 https://amzn.to/3S8LTqd
Lead free solder 1 https://amzn.to/3gewZ4u

Wood

Item Qty Link
Main speaker body wood* – 2.4m x 100mm x 10mm
[94 1/2" x 3 15/16” x 3/8”]
1 N/A
MDF or Hardboard (mounting plates) – 150mm x 72mm x 3mm
[5 15/16” x 2 13/16” x 1/8”]
1 N/A
Walnut or dark wood (speaker grills) – 140mm x 70mm x 3-4mm**
[5 1/2" x 2 3/4" x 1/8”-3/16”]**
1 N/A
Walnut or dark wood (volume knob) – 56mm x 56mm x 12mm
[2 3/16” x 2 3/16” x 1/2"]
1 N/A
Volume position indicator dowel – Diameter = 4-5mm [5/32” – 3/16”], Length = 20mm [13/16”] 1 N/A
Volume knob recess dowel - Diameter = 16mm [5/8”], Length = 6mm [1/4”] 1 N/A

* Select a type of wood suitable for bending. Poplar, Beech, Maple and Ash are commonly used but other species are also suitable. The wood should be straight grained and knot free.
** As thin as you can get aiming for 3mm [1/8”] - no problem if slightly thicker

Tools

Some of the tools I used for this build. If the exact product wasn't available, I've included a link to an equivalent product.

Item Link
DEWALT 10-Inch Table Saw, 32-1/2-Inch Rip Capacity (110V USA plug style) https://amzn.to/3OCJHWF
DEWALT 20V MAX Cordless Drill / Driver Kit, Brushless, 1/2-Inch (110V USA plug style) https://amzn.to/3OA37vg
Temperature Controlled Soldering Iron (110V USA plug style) https://amzn.to/3eEiUNp
Wire strippers https://amzn.to/3Sap2KL
Side cutting pliers https://amzn.to/3TvqbO9

Disclaimer: A small commission might be received for sales made through the affiliate links above.