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BAT - 9v battery |
x 1 | |
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SW - Switch |
x 1 | |
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U1 - 78L05 |
x 1 | |
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IND - Detection coil. Aprox. 22 turns 25 cm. diameter. |
x 1 | |
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U2 - Attiny13 |
x 1 | |
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U3 - BC548 |
x 1 | |
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U5 - 2N7002 |
x 1 | |
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D1 - D4 - Led |
x 4 | |
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R1 - 3.1K |
x 1 | |
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R2 - 100 |
x 1 | |
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R3 - 1K |
x 1 | |
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R4 - 10K |
x 1 | |
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R5 - R8 - 470 |
x 1 | |
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C1 - C3 - 100nf |
x 1 | |
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C4 - 4.7uf |
x 1 |
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.
Metal Detector
Project images are for reference only. Actual production is based on the manufacturing files on the project page.
Please review the designer's notes (e.g., PCB thickness) and select the appropriate options.
PCBWay is not responsible
for issues caused by unsuitable parameter selections.
For more important ordering information, please refer to
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