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![Homemade bluetooth portable DIY speaker 3d printed case](https://i2.wp.com/electronoobs.com/images/Circuitos/tut_13/Full_components_scheamtic_two_battery.png)
![Schematic homemade bluetooth speaker](https://i2.wp.com/electronoobs.com/images/Circuitos/tut_31/sch_2.jpg)
![Concrete Bluetooth Speaker | Techydiy](https://i2.wp.com/www.techydiy.org/wp-content/uploads/2019/05/power-wiring-300x169.jpg)
![Concrete Bluetooth Speaker | Techydiy](https://i2.wp.com/www.techydiy.org/wp-content/uploads/2019/05/power-wiring.jpg)