🛠️ MAKER GUIDEJun 03, 2026•⏱️ 1 min read•🇳🇵 Tested in Nepal
DIY Portable Bluetooth Boombox with TDA7297 & 3S 18650 Battery Pack
Build a rechargeable, high-fidelity portable Bluetooth boombox with the TDA7297 15W+15W digital amplifier, stereo receiver, and 3S BMS battery pack.
🛠️ BILL OF MATERIALS (BOM)
Required Hardware & Component Checklist
Curated components verified for this project. Check the items you need, adjust quantities, and add straight to cart:
Estimated Total (5/5 items):
NPR 1,310
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NPR 350
NPR 150
NPR 180
NPR 600
(NPR 200 ea)
NPR 30
DIY Portable Bluetooth Boombox with TDA7297 & 3S 18650 Battery Pack
Build a loud portable outdoor boombox powered by a 3S 11.1V 18650 battery pack with the TDA7297 Dual-Channel 15W+15W Audio Power Amplifier Board and Bluetooth audio receiver.
Hardware Bill of Materials:
- Audio Amplifier: TDA7297 Dual-Channel 15W+15W Audio Power Amplifier Board 12V
- Bluetooth Receiver: Bluetooth Audio Receiver Module with Stereo Output
- Battery Management: 18650 3S 12V BMS Protection Board
- Lithium Cells: 3x 18650 3.7V 3000mAh Lithium-Ion Battery
- Power Jack: DC Power Supply Jack Socket Female Panel Mount 5.5 X 2.1mm
Circuit Pinout & Wiring Connections:
| Module Terminal | Connection Target | Function / Description |
|---|---|---|
| 3S BMS P+ / P- | TDA7297 Power Input (+12V/GND) | 11.1V Buffered Battery Power |
| 3S BMS B+ / B1 / B2 / B- | 3x 18650 Cells in Series | Cell Balance & Cutoff Protection |
| Bluetooth Audio L / R / GND | TDA7297 Audio Input (L/R/GND) | Stereo Audio In |
| TDA7297 Out Left / Out Right | Dual 15W Speaker Drivers (4Ω-8Ω) | Stereo Acoustic Output |
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