5.3V Aluminum battery , cool idea 2017, science school project for learnning
Homemade a small and fast car
How to make speaker using CDs flat
12V , 100A using Super capacitors , Amazing idea
自宅で簡単な1.5Vバッテリー溶接機を作る方法!驚くほどスマート
Free energy , homemade a cheap solar cell using beer can
Free energy , self running machine , non stop machine
How to Make a High Speed Mini Drill
Free Energy , 200V AC generator, can charge the phone
How to make 2000RPM DC motor , science school project for learning
New ideas to make spot welding machine with high Quality
80V AC generator from 7.4V , Free energy from 7.4V to 80