Arduino metal detector?

[torrente1976]

I'm trying to make one VLF with arduino due benefits are more interesting I consegir drive a TFT LCD touch my siquiente step is to manufacture the coil to work at four frequencies at the same time 4khz 24kHz. My double D coil will ohn I am with design

[Davor]

Multifrequency? Why not. If you go with the BBS Tx excitation, you'll be able to process frequencies sequentially.

[daverave]

Anyone tried using an Arduino board to build a metal detector? Thinking about a pulse-induction type detector, like Andy's Chance detector.

Would be nice as an open source project, with the code to be downloaded and modified to your needs. Maybe even with a custom arduino shield.

Hi Joop....i would like to have a go at arduino to programme a lcd bar graph for a pulse detector...ive never done programming before and im very slow at learning this type of thing !!! do you think i could learn to do this ????

[FoxyLab]

Here is a link to the Foxy PI Arduino metal detector, looks interesting, but the power supply arrangement looks a bit unusual
not sure about VR1.

http://acdc.foxylab.com/node/47

Hello! Thanks for link to my project.
VR1 - DC-DC Boost Converter Step Up Module 1-5V to 5V 500mA Power Module New F5 from ebay

[6666]

Hello! Thanks for link to my project.
VR1 - DC-DC Boost Converter Step Up Module 1-5V to 5V 500mA Power Module New F5 from ebay

Hi Foxylab thanks for the information on VR1, yes lots of modules on ebay, should there be a connection to VIN on the nano board ?
where do we download the software thanks ?
Would your software work ok in Arduino UNO wihout any modification ?

[FoxyLab]

should there be a connection to VIN on the nano board ?

No, not to VIN. Output of VR1 must be connected to "5V" pin of Arduino.

where do we download the software?

Software currently in development, very-very old version (without menu, interrupts etc) can be downloaded from my GitHub : https://github.com/Dreamy16101976/foxyPIv1
I will upload new version in the future.

Would your software work ok in Arduino UNO wihout any modification ?

I will be studying this problem.

[6666]

Hi Foxylab
Thanks for the information, I have copied the sketch, and added the extra libraries from adafruit and jeelib

the code compiles, but does throw up a warning about one line of code, but as you say its very very old.
Cheers

[FoxyLab]

Field test and search with my Arduino pulse metal detector 26.03.2016
https://youtu.be/Xk4X6O1646M

[FoxyLab]

My Arduino pulse metal detector: dynamic (motion) mode in action
https://youtu.be/LoBzFpZ0NYw

[FoxyLab]

I researched the loudness of my piezo element at different frequencies. As well as draw in datasheet, characteristic of very chaotic. However, I have found a series of frequencies 800 - 900 - 1000 - 1100 Hz with increasing volume (according to Android-application - from 54 to 69 dB).

[FoxyLab]

My Arduino-based MD in action:

[bernte_one]

can we make separate threads for simple pi of Alex (narod.ru)

and another thread for foxy pi?

i would do active work on both Project, Goal is to create a layout for easy shield pcb for arduino nano

best regards

[FoxyLab]

My new finds:

Guess what it is?

[6666]

Some sort of cannon projectile ?

[FoxyLab]

Some sort of cannon projectile ?

Yes, fragments of mortar shell (IMHO german 81,4 mm).