Make The Detector Coil

Use 3mm Plywood, Using  Two 9inch Plywood  an one 8inch Plywood 

To Make The Coil 

and Winder  it Coil 10 Round

BFO Metal Detector

This My Project To Make All Metal Detector 

I WILL GIVE SCHEMATIC AND DETAIL ABOUT METAL DETECTOR

This Is BFO Metal Detector

This Is Simple How To Make Metal Detector

1 : The Schematic

2 : The PCB Layout

3 : The Component Part Placement

Parts list

Power source:
Any 9v battery PP3 is ideal.

Capacitors:
2 off  220uF 16v electrolytic.
5 off  .01uF polyester.
5 off  .1uF polyester.

Resistors:
Resistors 1/4 watt 5%
6 off  10k
1 off  1K
1 off  2.2 Mega ohm
2 off  39k

Transistors:
All BC 184B, or 2N3904, or 2N2222A. Just about any small signal npn with a gain of 250+ will do. There are hundreds to choose from.

Audio output:
A 2.5 inch 8 ohm speaker will work but headphones or earpiece are preferable the higher the impedance the better.

How To make The Coil Its Very Easy To make I Will make Video how To make it Work With Simple Coil