Simple metal detector circuit using a CA3140 IC.

[6666]

Simple metal detector circuit using a CA3140 IC.

Very easy beginner project.

http://www.circuitdiagram.org/simple-metal-detector.html

[Funfinder]

I guess here we have the record concerning an ultra-simple to built metal-detector!
Cool! Thanks!

Do you think the same works with a LM358?

http://www.geotech1.com/forums/attachment.php?attachmentid=35092&d=1455002392

http://www.geotech1.com/forums/showthread.php?22594-Vibration-for-MDs-via-audio-jack&p=213082#post213082

If yes, the above ultra-sensitive circuit could be changed into a vibrating metal-detector.

[6666]

Hi, I have not built the circuit yet, maybe soon, fun to try it.