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Arduino Metal Detector -
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Spirit PI" Detector de metales con ESP32/ Prueba del PCB - YouTube
ESP32 Metal Detector Array Experiment - YouTube
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Metal Detector Scanner Kit non assemblato DC 3V-5V Suite Metal Sensor Board Module Kit elettronici fai da te PCB Board Buzzer condensatore - AliExpress
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Guida alla board ESP32 con Microcamera: ESP32-CAM
