![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 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](https://steemitimages.com/640x0/https://res.cloudinary.com/hpiynhbhq/image/upload/v1521027414/wradjizpnwuk9lwycrtb.png)
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
![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 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](https://steemitimages.com/640x0/https://res.cloudinary.com/hpiynhbhq/image/upload/v1521027657/qpr45oc791br1vi7k35c.png)
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
![Project Question - A simple sensitive metal detector (project from hub). - Project Guidance - Arduino Forum Project Question - A simple sensitive metal detector (project from hub). - Project Guidance - Arduino Forum](https://europe1.discourse-cdn.com/arduino/original/4X/5/6/4/564bcba6fea25274ed73af2be4f8479d0213c686.jpeg)
Project Question - A simple sensitive metal detector (project from hub). - Project Guidance - Arduino Forum
![Project Question - A simple sensitive metal detector (project from hub). - Project Guidance - Arduino Forum Project Question - A simple sensitive metal detector (project from hub). - Project Guidance - Arduino Forum](https://europe1.discourse-cdn.com/arduino/original/4X/f/8/7/f8735f9339f51dd5a44b04435e3293068799c41e.png)