DIY DD metal detector 2 - coin at 35cm, audio indicator, PCB
18:31
DIY DD metal detector 1 - first success
12:54
сигнал
11:14
Understanding and using DDCoils while Metal Detecting
21:16
DETECTOR DE METAL CASEIRÃO e PODEROSO! apenas 3 TRANSISTORES, SEM CI e SEM PLACA ( UTsource )
14:57
DIY deep metal detector with distance indicator light (audience suggestion)
30:59
Super Detector de Metais
12:40
Metal Detector Discrimination Explained (with a Garret AT Pro)
11:15