❄️ DIY 5V Mini USB Cooler – Portable Cooling on the Go

 

❄️ DIY 5V Mini USB Cooler – Portable Cooling on the Go



Beat the heat with a simple, homemade 5V mini USB cooler! Perfect for desk use, small rooms, or electronics cooling, this project is budget-friendly and easy to build using basic electronic parts.


🧾 Components Required

ItemPurpose
5V DC Fan (small PC fan)Main cooling component
USB Cable (old/used)Power supply from power bank/laptop
Small Plastic Box / CaseEnclosure for setup
Switch (optional)On/off control
Ice compartment (optional)For extra cooling effect
Foam sheet/InsulationFor better airflow direction

⚙️ How It Works

  • The USB cable supplies 5V power from any USB source (power bank, adapter, laptop).

  • The fan blows air through the case vents.

  • Optionally, place a small ice tray or wet sponge in front of the fan for chilled air.


🔌 Circuit Connection

css
[Red wire from USB][+ of fan] [Black wire from USB][- of fan]

Add a switch in between if needed. Make sure wires are insulated properly.


✅ Features

  • Runs on any USB port (laptop, power bank, charger)

  • Compact and portable

  • Can be used on desks, inside car, or in a tent

  • Customizable design


🛠️ Assembly Tips

  1. Cut a hole in the box for fan and vents.

  2. Fix the fan securely inside or on top.

  3. Connect the USB cable to the fan.

  4. Optionally place a frozen sponge or ice inside for cooling boost.

  5. Close and test the unit.


🧠 Bonus Ideas

  • Add LED lights for style

  • Attach to your raspberry pi or router as a cooling fan

  • Make a solar-powered version using a 5V panel


⚠️ Safety Notes

  • Use only a 5V fan – higher voltage may damage USB ports

  • Don’t short USB wires

  • Keep the inside dry if using ice or sponge


🎯 Final Thoughts

A 5V mini USB cooler is an excellent DIY project for summer. It’s simple, low-cost, and can be powered by any USB port – making it perfect for students, hobbyists, or work desks.

Comments

Popular Posts

F450 Drone Kit DIY Quadcopter Flying Multicopter Heli Flame Wheel Kit in Pakistan

Heat Gun – For loosening glue/seals

PVC Pipe Mini Washing Machine

DIY Mini iPhone 17 Pro Max with Paper and Cardboard

Mini Wind Turbine with PVC Pipes

Touch Sensor

PVC Pipe Mini Lathe Machine

Gas Leakage Sensor

DIY electric fireplace decor