#Diy vlf receiver generator#

Your success and return on your investment, depends on how much time and effort you put into it. Target ID isnвЂ™t a guaranty, even on expensive units. Were you generally find coins and other treasures, you find a lot of garbage as well. There is a lot of junk metal in the ground, that you donвЂ™t generally want to listen to, or dig up.

There is quite a few things that need to be tuned, to the ground you are searching. This think probably will work well enough for some, but wouldnвЂ™t get me excited enough to build. Well, as someone thatвЂ™s done a little metal detecting/treasure hunting. Posted in Misc Hacks, Phone Hacks Tagged diy metal detector, smartphone Post navigation Modern metal detectors can also distinguish between different types of metal by analyzing the phase shift of the detected signal which might be some way to improve the design. The detector turned out to be quite sensitive and can detect a coin at up to 25 cm distance and larger metal objects even up to 1 m. also included an audio amplifier and small speaker into the device.

This signal is then fed into the microphone port of a smartphone and analyzed by a custom metal detector app. The resulting oscillating magnetic field will induce eddy currents in a nearby metal object that in turn induce a signal in the receiver coil.

#Diy vlf receiver generator#

The transmitter coil is driven by a signal generator module that operates at its resonant frequency of 4.74 kHz. This Very Low Frequency (VLF) metal detector uses transmitter and receiver coils in so-called Double-D geometry. The design is based on an opensource metal detector called Smart Hunter. If you ever thought about becoming a treasure hunter this simple DIY metal detector by may be a nice project to start with.