Thanks for sharing! What kind of distances can you detect in air? Is there a possibility to discriminate aluminum foil?
I am working on a pulse-induction type detector with arduino, but it's far from ready.
So with 6300km coil diameter you can detect the Earth's iron core then?
I'm thinking of making the construction of an Arduino based metal detector a project for the local maker club. VLF, probably.
Hi flyboy, I've not had time to work on this for a while. My latest induction balance metal detector is described in reply #29.I'm still trying to work out what user interface is best. I'm thinking of a headset, with short blips to say everything is working and longer blips when metal is detected, higher pitch for non-ferrous, lower pitch for ferrous. Probably also an LCD to provide more detailed info when it detects something.
You also decribed success with a Pulse Induction Version.But, I do not see any Schematic for this - just a description.Can you post a schematic for this PI version ?
Well, for one thing you want a numerical readout of a few stats and those stats being the metal type, the frequency being used (I take it we can change this else can forget this), the perceived depth of the object, the size of the object is nice if it can be had with your circuit, and battery life left. As far as your head phone you are on to something with what you said as that is about how the commercial ones work.