Components
|
BAT - 9v battery |
x 1 | |
|
SW - Switch |
x 1 | |
|
U1 - 78L05 |
x 1 | |
|
IND - Detection coil. Aprox. 22 turns 25 cm. diameter. |
x 1 | |
|
U2 - Attiny13 |
x 1 | |
|
U3 - BC548 |
x 1 | |
|
U5 - 2N7002 |
x 1 | |
|
D1 - D4 - Led |
x 4 | |
|
R1 - 3.1K |
x 1 | |
|
R2 - 100 |
x 1 | |
|
R3 - 1K |
x 1 | |
|
R4 - 10K |
x 1 | |
|
R5 - R8 - 470 |
x 1 | |
|
C1 - C3 - 100nf |
x 1 | |
|
C4 - 4.7uf |
x 1 |
Description
Metal Detector
This metal detector is based on the principle of frequency displacement when a magnetic material is close to the oscillator coil.
At first the microcontroller gets the frequency of oscillation, when the frequency change it lights one to four leds, according to the displacement amount.
Code
Schematic and Layout

Dec 13,2024
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Metal Detector
A metal detector based on frequency displacement. Attiny13 as the core of the project.
384
2
0
Published: Dec 13,2024
Download Gerber file 2
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Simeon Ivanov Dec 22,2024
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Benjamín Alejandro Luna Ramírez Dec 13,2024
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