Custom Bluetooth Speaker with LED Visualizer

Build a portable Bluetooth speaker featuring a custom LED visualizer that reacts to the music. This project combines electronics and programming to create a unique audio-visual gadget perfect for music lovers.

Tech & Gadgets Intermediate 8 hours $50
Step-by-Step Instructions
1. Design the circuit: Connect the Bluetooth module to the amplifier and speaker. Integrate the microcontroller to receive audio data or signal for LED control.
2. Set up the microcontroller: Program the microcontroller to read audio input or Bluetooth signals and control the LED strip accordingly, creating visual effects that sync with the music.
3. Assemble the power system: Connect the lithium-ion battery to the charging module and boost converter to ensure stable voltage for the speaker and LEDs.
4. Wire all components: Carefully solder and connect the Bluetooth module, amplifier, speaker, LEDs, microcontroller, buttons, and power system according to your circuit design.
5. Test the electronics: Power on the system, pair with a Bluetooth device, play music, and observe the LED visualizer response. Debug and adjust code or wiring as needed.
6. Create and prepare the enclosure: Design or modify a box to house all components securely, allowing openings for speaker sound, charging port, buttons, and LEDs.
7. Mount components inside the enclosure: Secure all parts inside the box, ensuring good cable management and accessibility.
8. Final testing: Verify Bluetooth connectivity, sound quality, LED responsiveness, and battery charging functionality.
9. Optional enhancements: Add features like volume control buttons, battery level indicators, or customizable LED patterns through additional programming.
Materials
Bluetooth audio module with amplifier
Microcontroller (e.g., Arduino Nano or ESP32)
3W to 5W full-range speaker driver
LED strip (WS2812B or similar addressable LEDs)
Rechargeable lithium-ion battery (3.7V, 2000mAh or higher)
Battery charging module (TP4056)
Boost converter module (to step up battery voltage to speaker and LEDs)
Push buttons (for power and mode control)
Enclosure (3D printed or wooden box)
Wires and connectors
Soldering tools
USB cable for programming
Resistors and capacitors as needed for circuit stability
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