Metal detector using Arduino - Project Guidance - Arduino Forum
Metal Detector using Arduino
How to build a metal detector using an inductive proximity sensor with Arduino
Arduino Metal Detector Project with Code and Circuit Diagram
Semplice metal detector con transistor ed Arduino - Moreware Blog
Electronic Project 40: A Metal Detector for Security Device using the principle of a tank circuit for inductive sensing and with the aid of op-amp, speaker and arduino uno — Steemit
Robocraze Metal Detector Sensor with Speaker TTL Output for Arduino, NodeMcu, Raspberry Pi : Amazon.in: Industrial & Scientific