🔦🎵 DIY Mini Emergency Light with Bluetooth Speaker

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🔦🎵 DIY Mini Emergency Light with Bluetooth Speaker


Why not enjoy light and music during a power outage? This DIY combo device combines a mini emergency LED light with a Bluetooth speaker, making it perfect for blackouts, camping, or travel.

🧾 Components Required

ComponentPurpose
3.7V 18650 BatteryPower source
TP4056 Charging ModuleBattery charging & protection
Boost Converter (5V)Step up voltage for circuit
Bright White LEDs (3–5)Emergency lighting
Resistor (100–220 ohm)For LEDs
Bluetooth Audio Module (e.g., MH-M18 or XS3868)Wireless music
Small Speaker (3W–5W)Audio output
On/Off SwitchPower control
USB Cable / PortCharging input
Small Enclosure BoxFinal body casing

⚙️ Circuit Overview

Lighting Section:

  • Battery → Boost Converter (5V) → Switch → Resistor → LEDs

Audio Section:

  • Battery → Bluetooth Module → Speaker

You can power both sections from the same boosted 5V line.

✅ Features

  • Bright LED emergency light

  • Bluetooth audio up to 10 meters range

  • Rechargeable with USB charger

  • Compact & portable

  • Great for homes, study tables, or outdoor use

🛠️ Assembly Steps

  1. Fix LEDs in front and connect them with a resistor to boost converter output.

  2. Mount the Bluetooth module and speaker inside the box.

  3. Connect battery to TP4056, and output to the boost converter.

  4. Add a switch to control both light and audio.

  5. Secure all parts inside the box and test.

🔋 Charging Tip

Use TP4056’s micro USB port for charging. A red LED shows charging, blue means full.

🧠 Extra Ideas

  • Add FM module for radio

  • Include volume buttons or switch

  • Add solar panel for charging in sunlight

🎯 Final Thoughts

This mini Bluetooth speaker with emergency light is not just practical—it’s a perfect blend of entertainment and utility. Ideal for students, campers, or anyone who loves smart DIY electronics!

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