DIY Emergency LED Light & Bluetooth Amplifier – Two Useful Gadgets in One Project

This project combines two practical DIY electronics ideas: an emergency LED light and a compact Bluetooth amplifier. Both are easy to make, low-cost, and extremely useful during power cuts or for portable audio.

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Materials Needed

• High-power LED (3W or 5W)

• LED driver resistor (if needed)

• Bluetooth amplifier module

• Small speaker

• 18650 battery or power bank

• Switch (ON/OFF)

• Cardboard or plastic box

• Hot glue gun

• Soldering iron & wires

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How to Make the Emergency LED Light

1. Mount the LED
   Fix the LED on the front panel of the box.

2. Connect the LED Circuit
   Add resistor if required and connect to the battery.

3. Add Switch
   Install a switch to control the LED.

4. Test
   When ON, the LED gives bright emergency light.

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How to Make the Bluetooth Amplifier

1. Install the Speaker
   Place the small speaker inside the box.

2. Connect Bluetooth Module
   Connect speaker wires and power supply.

3. Add Control Switch
   Use a separate switch or shared power.

4. Test Audio
   Pair your phone and play music.

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Combine Both

Place both circuits inside one sturdy box.
You can use separate switches or a single power switch depending on design.

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Why This Project Is Useful

• Works as emergency light

• Gives portable Bluetooth sound

• Great learning project

• Useful during load-shedding

• Low cost and easy to build

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