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a plastic bottle with red arrows on it and some white stuff in the top right corner
How to make Air Cooler at home using Plastic Bottle (Easy life hacks)
a hand holding a blue fan in front of a green field
A Brilliant Idea From An Old Computer Fan! You’ll be glad to see it!
a person is holding a pair of scissors near the hole in the golf putter's wedge
3 Ingenious Ways To Fix Broken Plastics With Plastic Welding Method!
플라스틱 용접 방법으로 깨진 플라스틱을 고치는 3가지 기발한 방법! - YouTube
a hand holding a tiny light with the words neon lamps much cooler than you think
Neon lamps are more interesting than you think they are. relaxation oscillator. Neon Schmitt trigger
two different views of an air conditioner
Homemade AC Air Cooler! DIY Air Cooling! best yet! (no added humidity)! Easy DIY - Air Conditioner!
two hands are holding purple plastic tubes in front of a multimeter and other tools
Repair laptop battery at home|| how to open laptop battery and rebuild after repairing
the wiring diagram shows how to use an invertor
Driving P-Channel MOSFET LM7905 Negative 5v Regulator
two screens showing the different types of computers and their functions, with text below them
SMPS Transformer Coil Transformer Calculation Programs – Electronics Projects Circuits