DIY Metal Detector / How to Make a Deep Metal Detector

 I want to show you how to make a very simple and effective metal detector that works using components that you can easily find on the market. This detector does not have many components and does not contain any microcontrollers or software. Although this is an entry level detector, it is easy to make and works quite well. Depending on the size of the nearby metal, you can detect metals at a distance of 40 to 50 centimeters. To simply explain how the circuit works

The circuit of the metal detector consists of a coil which produces a magnetic field and a receiver circuit which detects variations in this magnetic field.

The coil that produces the magnetic field is powered by high frequency alternating current generated by a signal generator. The magnetic field in the coil is disturbed by nearby metallic objects. This magnetic disturbance is picked up by an induction coil in the circuit and processed by a receiver circuit.

The receiver circuit processes the induction signals caused by the disturbance of the magnetic field, amplifies them, filters them and detects them. Accordingly, the presence of a metallic object is detected by changes in the output signal. The signal is then evaluated by processors and an alert is issued to the user.

In summary, the metal detector circuit detects the presence of metallic objects by detecting disturbances in the magnetic field, and alerts the user with a warning.

 I want to show you how to make a very simple and effective metal detector that works using components that you can easily find on the market. This detector does not have many components and does not contain any microcontrollers or software. Although this is an entry level detector, it is easy to make and works quite well. Depending on the size of the nearby metal, you can detect metals at a distance of 40 to 50 centimeters. To simply explain how the circuit works

The circuit of the metal detector consists of a coil which produces a magnetic field and a receiver circuit which detects variations in this magnetic field.

The coil that produces the magnetic field is powered by high frequency alternating current generated by a signal generator. The magnetic field in the coil is disturbed by nearby metallic objects. This magnetic disturbance is picked up by an induction coil in the circuit and processed by a receiver circuit.

The receiver circuit processes the induction signals caused by the disturbance of the magnetic field, amplifies them, filters them and detects them. Accordingly, the presence of a metallic object is detected by changes in the output signal. The signal is then evaluated by processors and an alert is issued to the user.

In summary, the metal detector circuit detects the presence of metallic objects by detecting disturbances in the magnetic field, and alerts the user with a warning.