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