Can I build my own metal detector?
Building your own metal detector is fun and educational. While building a traditional metal detector may require a kit (or in depth knowledge of electrical circuits), you can create simpler versions with household devices. A more well known method is to use a calculator and a radio to make a metal detector.
How does a pulse induction metal detector work?
Pulse Induction metal detectors work by sending a high amperage signal through a, usually, copper coil to create an electromagnetic field. This electromagnetic field is then allowed to collapse which in turn creates a voltage spike that is able to be detected by the receive coil.
DIY Arduino Based Pulse Induction Metal Detector. The detector can detect a small metal coin at a distance of 15 centimeters. IntermediateFull instructions provided6,724. Pulse Induction (PI) systems use a single coil as both transmitter and receiver. This technology sends powerful, short bursts (pulses) of current through a coil of wire.
What do you need to make a metal detector?
Instructions for DIY metal detectors are plenty, but this recipe is particular in the sense that it requires very few components in addition to an Arduino microcontroller: a common capacitor, resistor and diode form the core, together with a search coil that consist of circa 20 windings of electrically conducting cable.
How many pulses does a metal detector send?
A typical PI-based metal detector sends about 100 pulses per second, but the number can vary greatly based on the manufacturer and model, ranging from a couple of dozen pulses per second to over a thousand. If the metal detector is over a metal object, the pulse creates an opposite magnetic field in the object.
How to make an Arduino metal detector work?
Simple Arduino Metal Detector 1 Working Principle. When electricity starts flowing through a coil, it builds up a magnetic field. 2 Required Components. Structure to hold the coil. 3 The Search Coil. 4 A Prototype Version. 5 A Soldered Version. 6 The Software. 7 Mounting It on a Stick. 8 How to Use It.