what you need to build a detector

Cornelius Topic starter

Silver Member

marching to the beat of a different drummer
Join Date: Jan, 2009

Activity

Posts: 954
Referrals: 0

4895.00 Gold
View Inventory

	what you need to build a detector « on: November 06, 2009, 05:07:35 pm »

I don't mind whatever detector you wan to build , but there are at least three parts of information you need .

1) a good clear PCB
2) a component side of the PCB board .
3) a parts list mentioning all the parts used , and their values .
I have been noticing that all the help given to our members always is short of a complete set of these documents . Why ? I don't know . But if you want to help the members give them at least ALL the info they need . Cornelius

Linkback:

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

http://www.thunting.com/smf/index.php/topic,9158.msg57398.html#msg57398


	Logged

xavier

Moderator
Platin Member

From a rainy Brussels
Join Date: May, 2009

166

Activity

Posts: 7339
Referrals: 0

32206.00 Gold
View Inventory

	Re: what you need to build a detector « Reply #1 on: November 06, 2009, 05:23:24 pm »

Hi Cornelius

I take it that a good clear PCB would be a proper view of the PCB and that and the component side would be a good photo or facsimile there of sorry but it?s just that it?s not all that clear.

Regards
Xavier

Linkback:

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

http://www.thunting.com/smf/index.php/topic,9158.msg57401.html#msg57401

Xavier


	Logged

So many questions so little time

Cornelius Topic starter

Silver Member

marching to the beat of a different drummer
Join Date: Jan, 2009

Activity

Posts: 954
Referrals: 0

4895.00 Gold
View Inventory

	Re: what you need to build a detector « Reply #2 on: November 06, 2009, 05:32:52 pm »

Xavier . With a good PCB I mean a PCB with the right demensions ( it can de used directly to use in your photo printing on the copper plate ) . The next thing you have to know is where to put the resistors and capicitors etc . etc . So you need a component side of the PCB board . Now the next thing you have to know is what kind of parts you have to order . Like R1= xx Ohms R2 = YY Ohms and C1 = xx Mf and C2 = YY Pf etc etc . This is the minimum the guy that is helping you should supply . If he does not do that he is giving you unsufficient information and you will never be able to build the detector . MAYBE THAT IS WHAT IS ON HIS MIND ! Cornelius

Linkback:

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

http://www.thunting.com/smf/index.php/topic,9158.msg57402.html#msg57402


	Logged

Homefire

Global Moderator
Platin Member

Join Date: Jan, 2009

662

Activity

Posts: 15906
Referrals: 0

52360.00 Gold
View Inventory

	Re: what you need to build a detector « Reply #3 on: November 06, 2009, 06:51:40 pm »

Yep! Never Start a build until you have PCB, Parts list, Parts Placement, and Description of Circuit Functions. Shocked

Best to Insure Parts Availability on older machines.

Some Just an t to be had any more.

Linkback:

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

http://www.thunting.com/smf/index.php/topic,9158.msg57408.html#msg57408


	Logged

xavier

Moderator
Platin Member

From a rainy Brussels
Join Date: May, 2009

166

Activity

Posts: 7339
Referrals: 0

32206.00 Gold
View Inventory

	Re: what you need to build a detector « Reply #4 on: November 07, 2009, 03:30:30 am »

Hi to you Cornelius and homefire

Well you are both right the thing is well let me rather put it this way see i live in a small town called Aston Bay it's on the East coast SA and over here getting parts if one hell of a thing so I have to take designs from people and change the whole thing so that I can get it together and by the time that I am done it's not what was originally designed but those designs have helped me even if I don?t have the PCB layout I can produce my own and I should think that the members that post designs forget that not all members are as advanced as they are But point taken if i post something in the future I will insure that I have all the detail with it.

Regards
Xavier

Linkback:

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

http://www.thunting.com/smf/index.php/topic,9158.msg57459.html#msg57459

Xavier


	Logged

So many questions so little time

FRANSWA

Pull Tab

Join Date: Nov, 2009

Activity

Posts: 24
Referrals: 0

120.00 Gold
View Inventory

	Re: what you need to build a detector « Reply #5 on: December 07, 2009, 12:53:29 am »

Hello guys ..my question is to cornelius..
I have built a couple of P I detectors ,but the depths werent that good ,I go to the beach for my hunting so I want to build a Pi but I would like to build something worthwile and stable enough to use in the salt water -wet sand beach .I have noticed you have good reviews of the DBP2010
...how would it be in the above conditions ,and how is the depth .The 2 I have made only go to 20cm for a 30mm silver coin which is not really sufficient...what us your advice on this.I am after good sensitivity in these conditions...thank you fellas

Linkback:

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

http://www.thunting.com/smf/index.php/topic,9158.msg61505.html#msg61505


	Logged

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

225

Activity

Posts: 11219
Referrals: 12

47848.00 Gold
View Inventory

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

	Re: what you need to build a detector « Reply #6 on: December 07, 2009, 03:45:07 am »

	Quote:	Posted by FRANSWA
Hello guys ..my question is to cornelius.. I have built a couple of P I detectors ,but the depths werent that good ,I go to the beach for my hunting so I want to build a Pi but I would like to build something worthwile and stable enough to use in the salt water -wet sand beach .I have noticed you have good reviews of the DBP2010 ...how would it be in the above conditions ,and how is the depth .The 2 I have made only go to 20cm for a 30mm silver coin which is not really sufficient...what us your advice on this.I am after good sensitivity in these conditions...thank you fellas

Where are you located in Australia?

The depth of 30mm is horrible. The 20cm is passable but could be better. Have you calibrated your machine? There are some waveforms available for calibration that Eugene52 uploaded.

Linkback:

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

http://www.thunting.com/smf/index.php/topic,9158.msg61519.html#msg61519


	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!

mindfree

Copper Member

Join Date: Nov, 2009

Activity

Posts: 56
Referrals: 0

240.00 Gold
View Inventory

	Re: what you need to build a detector « Reply #7 on: December 07, 2009, 04:43:25 am »

I agree with Cornelius. Delta Pulse PI metal detector files should be there in download area so that we know there won't be any more changes. And those who have constructed it successfully should rate it.
I keep postponing constructing a detector because I always feel there is gonna be new changes.

Linkback:

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

http://www.thunting.com/smf/index.php/topic,9158.msg61523.html#msg61523


	Logged

xavier

Moderator
Platin Member

From a rainy Brussels
Join Date: May, 2009

166

Activity

Posts: 7339
Referrals: 0

32206.00 Gold
View Inventory

	Re: what you need to build a detector « Reply #8 on: December 07, 2009, 04:49:45 am »

Hi Cornelius

I have build the discriminerende BFO detector how ever looking at the diagram TR1 ? TR4 emitter is on ground and looking at the component side of the board (layout) collector is on ground Undecided

could you please check this out also could you please post the size and value of the coils, thickness of wire used and amount of turns Undecided

also the tuning procedure of L2 and C14 e.g. set C14 to mid point then tune L2.

Best regards
Xavier

Linkback:

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

http://www.thunting.com/smf/index.php/topic,9158.msg61524.html#msg61524

Xavier


	Logged

So many questions so little time

Cornelius Topic starter

Silver Member

marching to the beat of a different drummer
Join Date: Jan, 2009

Activity

Posts: 954
Referrals: 0

4895.00 Gold
View Inventory

	Re: what you need to build a detector « Reply #9 on: December 07, 2009, 07:16:59 am »

Xavier . Just follow the print as given . T1 through T4 ( all emitters are on ground ) . Be sure to ream the component side as indicated . As for the two oscillaters it is not important what their freq. outputs are as long as Fs is 1/4 of Rr . So if the Es is 200 , the Fr has to be 800 . If you could build a oscillator by using a cristal ( very stable ) for Fr , you would be on a very right track . Otherwise you have to use a coil ( L2 ) of 173 uH ) . It does not matter how you build your oscillators . The search coil has 45 windings insulated Cu wire of 0.5 mm . Coill diameter is 16.5 cm . I made my first L2 by winding Cu wire around an old coil body with a core and tried it out . By changing the amount of windings I came pretty close . Now I am using a cristal oscillator which makes the whole detector a lot more stable . This is a very nice detector and you should have a lot of fun with it . If you got the whole thing working please pass it on to other interested members . Cornelius ( ps . be sure you drill the holes of the points that have to be reamed first ! )

Linkback:

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

http://www.thunting.com/smf/index.php/topic,9158.msg61542.html#msg61542


	Logged

Pages: 1 2 Go Up

← previous next →