3 Diy metal detectors | 3 diy metal detectors using transistors | diy simple metal detector
13:18
Diy metal detector | Diy transistor metal detector
14:57
DIY deep metal detector with distance indicator light (audience suggestion)
8:31
Few people Know this method of Soldering! Add salt to the soldering iron and be amazed!
6:02
Inverter 12v to 220v, 2500w NO IC Inventor101#8
4:57
DIY Metal Detector
17:37
I make Free Water Pump no need electric power new style
7:28
How metal detectors work
5:57