[x] Welcome at THunting.com!

A fun place to talk about Metal Detecting, Treasure Hunting & Prospecting. Here you can share finds and experience with thousands of members from all over the world

Join us and Register Now - Its FREE & EASY

THunting.com
Treasure Hunting & Metal Detecting Community
   
Advanced Search
*
Welcome, Guest! Please login or register HERE - It is FREE and easy.
Only registered users can post and view images on our message boards.
Did you miss your activation email?

Login with email, password and session length
Or Login Using Social Network Account
2
News:
Pages:  1 2 3 4 5   Go Down
Print
Share this topic on FacebookShare this topic on Del.icio.usShare this topic on DiggShare this topic on RedditShare this topic on Twitter
Tags:
0 Members and 1 Guest are viewing this topic.
Offline xavier
Platin Member
*

From a rainy Brussels
Join Date: May, 2009
Thank you166

Activity
0%
Male
Belgium
Posts: 7339
Referrals: 0

32206.00 Gold
View Inventory

Awards
« Reply #20 on: October 24, 2012, 02:50:01 pm »
Go Up Go Down
It's really quite simple to build a PI detector from a PIC and from all that you have told us so far I'm quite surprised that you do not attempt to build one on your own... you do know how to program and you do know the fundamentals of a PI metal detector don't you?

All the best
Xavier 

Linkback:

You are not allowed to view links.
Please Register or Login

http://www.thunting.com/smf/index.php/topic,38170.msg235671.html#msg235671


Xavier

Logged
So many questions so little time
Offline DjjjrTopic starter
Copper Member
*

Join Date: Sep, 2012
Thank you2

Activity
0%
Posts: 29
Referrals: 0

165.00 Gold
View Inventory

Awards
« Reply #21 on: October 24, 2012, 03:37:40 pm »
Go Up Go Down
yes X i can program
but i don’t know pi detector
the op-amp are real picky that’s why i wanted to start from somethings that works first.
i have a electronic lab here at the house and when done this will be all smd to keep the kit project down.
I really play with atl. energy need some time off...lol
I live in Phoenix az and have been told there is lots of gold around here.
I'm hopping that i can tune a device in for very small gold flakes (I would like to be as good or better then the minelab unit) wishful thinking......lol
I'm also building a dry washer and a wet washer (I forget the name) also I'm building a screw to separate... as a relief from work.
I'm building because i like to do things the hard way....lol
the PI looks better for what i want to do then the VLF or reg freq?
But i really don't detectors.
as a side note i hope you feel better and keep that great mind set you have

Don

Linkback:

You are not allowed to view links.
Please Register or Login

http://www.thunting.com/smf/index.php/topic,38170.msg235679.html#msg235679

Logged
Offline GoldDigger1950
The Old Man and the Soil
Global Moderator
Platin Member
*****

Just call me GD.
The Old Man and the Soil
Join Date: Jun, 2009
Thank you225

Activity
0%
Male
United States
Posts: 11219
Referrals: 12

47848.00 Gold
View Inventory

Awards

Garrett Groundhog ADS, Garrett Sea Hunter, Bounty Hunter Tracker IV, Bounty Hunter Pioneer 505,Minelab Eldorado Mk II, Tesoro Compadre, Tesoro Tiger Shark & A Few Home Brew Detectors
« Reply #22 on: October 24, 2012, 04:11:30 pm »
Go Up Go Down
Quote:Posted by Djjjr
but i don’t know pi detector

Go here for a tutorial on each of the popular types of detector including the PI.

You are not allowed to view links.
Please Register or Login

http://www.hobby-hour.com/electronics/metal_detectors.php


Linkback:

You are not allowed to view links.
Please Register or Login

http://www.thunting.com/smf/index.php/topic,38170.msg235682.html#msg235682

Logged
It's all about that moment when metal that hasn't seen the light of day for generations frees itself from the soil and presents itself to me.
Let's Talk Treasure!
Offline DjjjrTopic starter
Copper Member
*

Join Date: Sep, 2012
Thank you2

Activity
0%
Posts: 29
Referrals: 0

165.00 Gold
View Inventory

Awards
« Reply #23 on: October 24, 2012, 05:24:38 pm »
Go Up Go Down
Thanks GD
I have read that info
That is why i decided to make a PI.
I've probably been on 10 sites or more doing my research.
I have found that all the reading one can do only amounts to a hill of beans compared to actual hands on experience.
you people know more on what you want then any engineer.




Linkback:

You are not allowed to view links.
Please Register or Login

http://www.thunting.com/smf/index.php/topic,38170.msg235686.html#msg235686

Logged
Offline BitburgAggie_7377
Klugheit und Verstandnis
Platin Member
*

Define Treasure
Klugheit und Verstandnis
Join Date: Jul, 2009
Thank you116

Activity
75%

United States
Posts: 9235
Referrals: 0

26045.00 Gold
View Inventory

Awards

Fisher Impulse , Tesoro Lobo SuperTraq, Tesoro Vaquero, Tesoro Compadre, Garrett AT Max, Whites Sierra Super Trac
« Reply #24 on: October 24, 2012, 06:33:35 pm »
Go Up Go Down
Quote:Posted by Djjjr
you people know more on what you want then any engineer


Would it surprise you to learn that some of our people ARE engineers ?

Linkback:

You are not allowed to view links.
Please Register or Login

http://www.thunting.com/smf/index.php/topic,38170.msg235693.html#msg235693

Logged
Offline DjjjrTopic starter
Copper Member
*

Join Date: Sep, 2012
Thank you2

Activity
0%
Posts: 29
Referrals: 0

165.00 Gold
View Inventory

Awards
« Reply #25 on: October 24, 2012, 07:10:16 pm »
Go Up Go Down
Not at all
that's why i ask for opinions and help.
a person can only know so much about so much. As i said this is just for fun for me
I do alt. energy and have been beating my head against the wall for awhile.
and hopping to make a few friends.

Linkback:

You are not allowed to view links.
Please Register or Login

http://www.thunting.com/smf/index.php/topic,38170.msg235695.html#msg235695

Logged
Offline xavier
Platin Member
*

From a rainy Brussels
Join Date: May, 2009
Thank you166

Activity
0%
Male
Belgium
Posts: 7339
Referrals: 0

32206.00 Gold
View Inventory

Awards
« Reply #26 on: October 25, 2012, 12:37:55 pm »
Go Up Go Down
There are a few things that you will need to come to grips with, here are some of them, to build a metal detector even when you know what you want to achieve and you have the knowledge on how they work most of the time you just don't get what you want and some times they just don't work at all. In order to be able to build a decent metal detector you will first have to fail a number of times (that's how you will learn the most) Here are a few pointers to put you on the right path for building a PI detector. You need to know what coil you are going to be using then you will need to know all the timings that you are going to use like On time, Off time, Delay time, signal analysis time Ho did I mention that timing is the heart of the matter here LOL but all this timing should not scare you, use ADC lots of it then you will be able to do external timing ones you have that right you can just put it in your program and be rid with all the ADC it's a fun project that you want to do but it aint an easy one. Just one more thing if you want to find small flakes of gold you will need a small coil and as high a pulse rate as possible or the eddy currents just wont make it to your coil.   

Linkback:

You are not allowed to view links.
Please Register or Login

http://www.thunting.com/smf/index.php/topic,38170.msg235733.html#msg235733


Xavier

Logged
So many questions so little time
Offline DjjjrTopic starter
Copper Member
*

Join Date: Sep, 2012
Thank you2

Activity
0%
Posts: 29
Referrals: 0

165.00 Gold
View Inventory

Awards
« Reply #27 on: October 25, 2012, 01:01:56 pm »
Go Up Go Down
X
what about the different types of coils like a pancake or even multi pancakes

that’s why I’m  building a micro unit i will be able to see what I'm testing
from what I've read a 6 inch mono type is what i want to start with to give the best type of results.
6 inch at 8 high.....
but a pancake of
6 inch by 8 may be better
that’s where my thought pattern is at this time.
build then test
hopefully the design works with little or no problems.....(wishful thinking)




Linkback:

You are not allowed to view links.
Please Register or Login

http://www.thunting.com/smf/index.php/topic,38170.msg235737.html#msg235737

Logged
Offline xavier
Platin Member
*

From a rainy Brussels
Join Date: May, 2009
Thank you166

Activity
0%
Male
Belgium
Posts: 7339
Referrals: 0

32206.00 Gold
View Inventory

Awards
« Reply #28 on: October 25, 2012, 01:18:24 pm »
Go Up Go Down
If you want to find small gold flakes you would be better off with a 3" or 4" coil. If I were you I'd use two coils one TX and one RX

Posted on: October 25, 2012, 08:08:17 PM
Sorry I got it all wrong 5" or 6" coil is what I wanted to say I messed up in my conversion from cm to in

Linkback:

You are not allowed to view links.
Please Register or Login

http://www.thunting.com/smf/index.php/topic,38170.msg235739.html#msg235739


Xavier

Logged
So many questions so little time
Offline DjjjrTopic starter
Copper Member
*

Join Date: Sep, 2012
Thank you2

Activity
0%
Posts: 29
Referrals: 0

165.00 Gold
View Inventory

Awards
« Reply #29 on: October 25, 2012, 04:19:56 pm »
Go Up Go Down
I agree X
that is what I've been reading also. That is why i said build and test ect.
sorry i forget that everyone else uses cm 
the usa is screwed up and uses inch but thanks



Linkback:

You are not allowed to view links.
Please Register or Login

http://www.thunting.com/smf/index.php/topic,38170.msg235763.html#msg235763

Logged
Print
Pages:  1 2 3 4 5   Go Up
Jump to:  

Powered by SMF 1.1.19 | SMF © 2005, Simple Machines | Sitemap
Copyright THunting.com