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DIY USB mobile charger

🔌 DIY Variable Power Supply (5V to 18V) Using Transformer

DC Motor Speed Controller – Using PWM circuit to control speed of a small DC motor.

Automatic misting roof system

🔊 Mini Speaker Made by Ahmed – Compact Sound, Big Fun!

Simple Clap Switch – Using microphone and transistor to turn ON/OFF lights with a clap.

🔊 DIY Bluetooth Speaker Made by Ahmed – Wireless Sound in a Small Box

DIY Electronic Dice – Using 555 timer and LEDs to simulate a dice throw.

Wireless Electricity Transfer Project – Coils and capacitors used to transfer power wirelessly.

Title: Upgrading a Simple Charging Fan into a Cooling Fan with Mini Radiator

🔋 DIY Mini Power Bank – Pocket-Sized Backup Made at Home

Touch Sensor Light Without Arduino – Easy transistor-based touch switch to control LEDs.

🔊💡 Dual Function DIY – Amplifier & Emergency Light Combo