☀️ DIY Club: Mini USB Fan with 8-Hour Backup (Perfect for Summer)
🔥 Introduction
Summer in Pakistan brings heat and load shedding, making small cooling solutions very useful. In this DIY project, we will create a Mini USB Fan with up to 8 hours backup using simple electronic components.
This project is easy, low-cost, and perfect for beginners in electronics.
🧰 Required Components
DC Motor (5V–12V)
Fan Blade
18650 Lithium Battery (3000–3500 mAh)
TP4056 Charging Module (with protection)
DC Boost Converter (MT3608)
USB Cable / Port
ON/OFF Switch
Wires and Small Case
⚙️ Working Principle
This fan works on a rechargeable battery system:
The battery stores energy
The TP4056 module charges the battery via USB
The boost converter provides stable voltage
The motor runs the fan efficiently for long time
🔌 Circuit Connections
Connect battery to TP4056 (B+ and B-)
Connect TP4056 output to Boost Converter input
Connect boost output to motor through switch
Use USB cable to charge via TP4056
🔋 Backup Time
Battery Capacity: 3000 mAh
Motor Usage: ~300–400 mA
👉 Expected Backup: 7 to 9 hours (approx. 8 hours)
💡 Tips for Better Performance
Use a low-power or brushless motor
Keep fan blades light for less load
Add speed control (optional)
Use two batteries in parallel for longer backup
🎯 Final Result
Portable Mini Fan
USB Rechargeable
Long Backup (up to 8 hours)
Ideal for load shedding and travel use
📌 Conclusion
This DIY Mini USB Fan is a practical summer project that solves real-life problems. It’s a great way to learn battery management, charging modules, and basic electronics.
👉 Stay connected with DIY Club for more creative electronics projects!
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