Find more projects
Metal Detector DIY Circuit
The heart of this diy metal detector circuit is CS209A. The metal detector it is build with one coil of 100uH. CS209A has one oscillator wich forms an LC circuit, the inductance of the coil will change when it is near metal objects.
LED 1 will light and the buzzer turns on when the coil is changing inductance. The setup is easy, VR1 is adjusted ( away from any metal objects ) so that LED 1 will light and the buzzor sounds on, and then VR1 will be trimmed until led and buzzer are off.
DIY metal detector circuit
Find more projects
13 Responses to “Metal Detector DIY Circuit”
Leave a Reply
you should mark the connection points of the IC and also what is 2n2.
2nF2V
Two nano farads ; two volts
This is not such a good design for a metal detector, you should search something else. 2n2 = 2.2 nano Farads
plz send to me how to creat a metal detector thank you
It works for large stuff but wouldn’t detect a gold ring at 2″
If you want to actually build something decent
go to http://www.miymd.com, the guy there is soon
going to release a kit on par with the ML GPX units
for a fraction of the price
1000pf=1nf
1000nf=1mf
so 2.2nf=2200pf or0.22mf
correction to “so 2.2nf=2200pf or0.22mf”
0.22uF = 220 000pF.
Here is the correct way:
…so 2.2nF=2200pF OR 0.0022uF.
The answer to the first question. 2N2 is a non polorized ceramic capacitor with the capacitance value of 2.2 Nano farad.
What are the details of the search coil that you made, the diameter, wire size, and how many turns for the coil?
Thanks… Tom
The coil is a small inductor whose value has aready been determined in Henrys ie 100 micro. this component is not unlike the size of a 0.25 resistor.
advertising
does it work??
Thanks , I’ve just been looking for information approximately this subject for a while and yours is the best I have came upon so far. However, what about the bottom line? Are you sure in regards to the source?|What i do not realize is in truth how you are now not really much more well-favored than you might be right now. You are very intelligent.