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YouTube on MSN1 小时

How to Make a DC Motor at Home from Cardboard

Learn how to make a DC motor at home using simple materials like cardboard with our step-by-step tutorial. In this DIY ...
YouTube on MSN11 小时

How to Make a Speaker Amplifier at Home

Learn how to make a speaker amplifier at home with our step-by-step guide! This video provides detailed instructions and tips ...