Arduino wireless metal detector DIY / Spirit PI

Arduino wireless metal detector is a project based on smartphone and an arduino microcontroller.
It is a homemade pulse induction metal detector.
This metal detector is wireless, such as xp deus metal detector.
It is based on the "PI" technology - Pulse induction. The coil detects metal objects and arduino sends the data
through bluetooth module HC-05 to the smartphone. It is easy to do, the coil has only 25 turns.
The components are easy to find. We use an operational amplifier TL072, an irf740 MOSFET,
an arduino and a few more components. In this video I am going to show you
how this metal detector works and when i finish the app
i'll upload it to PlayStore and make a detailed video tutorial how to make this metal detector.
If you are interested, you can subscribe to my channel.
#SpiritPI #WirelessMetalDetector

[laurispeterisvejs]

I love this, I've been searching for a simple metal detector everywhere, and all of them includes some bs, but you have made it so simple and beautiful. Hopefully it's range is going to be good, then this video will be the perfect tutorial for me. Looking forward to seeing new videos! Wish you the best of luck!

[a.k.]

Hallo Sergey,
Thank you for the clear explanation about the SPIRIT PI and the fantastic website. I built the detector, and it works as expected.

[pradeepsenanayake]

I don’t know anything about electronic things but I enjoyed your video clips my country metal detecting prohibited (not allowed)

[ScalpWingstrading]

i made a coil with 0.7 mm copper wire d= 20 cm and 25 turns, the problem is the spirit pi esp32 does not detect coins and small objects only big objects and the depth is to little about 7 cm, But I made a another coil 0.25 mm copper wire d=20 cm 25t the depth increased about 10 cm, i want to make it like 25 cm, plz tell me what can i do ? thanks

[ivancarloslutz]

hello guy, that's a nice work! But i have bought your app and make the spirit pi with esp32 nodeMCU 32s, and the app can not connect with the bluetooth, i can just chose on the 'set bluetooth module'. Can you help me with this problem?

[trkbellikli]

Dear Neco. Is this code works with ESP8266 ? Waiting your answer, thanks.

[ervin]

Hello i made this Project but now working for me, The app not responding, what I can do to fix ?

[kiranmalganvi]

i tried but its not..working.. im not getting last end of the cirvuot