Pistol Detector - TOTeM (Complete Details)

[Qiaozhi]

Although Edition 1 of Inside the METAL DETECTOR (ITMD) has been completely sold out for several months, we still receive requests directly from people who are interested in Chapter 14 (The Pistol Detector).

Therefore, as an early end-of-year present from the administrators of this forum (and authors of Inside the METAL DETECTOR) we hereby release complete details of the TOTeM project from Edition 1.

Enjoy!

[pigeon]

Originally Posted by Qiaozhi

Although Edition 1 of Inside the METAL DETECTOR (ITMD) has been completely sold out for several months, we still receive requests directly from people who are interested in Chapter 14 (The Pistol Detector).

Therefore, as an early end-of-year present from the administrators of this forum (and authors of Inside the METAL DETECTOR) we hereby release complete details of the TOTeM project from Edition 1.

Enjoy!

hi

thank you very much

[abdou2014]

THANK YOU MR QIAOZHI

[sakher]

thank you very much MR.Qiaozhi

[sakher]

Please can you explain the passive\active switch (pl1 and pl5)
how Connecting with the DPDT type ?
thank you Qiaozhi ..

[zakari]

hi my dear qiaozhi

thanks alot for great job

best regard

[Mike(Mont)]

Thanks for posting. Not that I'd buy one but curious why you don't sell the completed boards, etc. as a partial kit? That way it would be easy enough to modify to get the thing to work without having to spend how many hours for us "slow" types.

[Guard]

The last 3 weeks i am searching for information to build your project.
That was ... "the right timming".

Thank you so much Mr Qiaozhi.

Regards
George

[Qiaozhi]

Originally Posted by sakher

Please can you explain the passive\active switch (pl1 and pl5)
how Connecting with the DPDT type ?
thank you Qiaozhi ..

That information is already in the document.

[Qiaozhi]

Originally Posted by Mike(Mont)

Thanks for posting. Not that I'd buy one but curious why you don't sell the completed boards, etc. as a partial kit? That way it would be easy enough to modify to get the thing to work without having to spend how many hours for us "slow" types.

Look at this thread ->
http://www.longrangelocators.com/for...ighlight=TOTeM
where Goldmaxx did an excellent job of following the instructions. There are also several videos of TOTeM in operation.

Snesko made a PCB for TOTeM, but he posted the files on an off-site server, and these files have since been removed.

I will leave the design of a PCB to members of the LRL Forum. This project is now in the public domain, and hence it's up to you what you do with it.

[Mike(Mont)]

Thanks.

[Mike(Mont)]

Just so you know. I am not agreeing with some of your "conclusions". I'll leave it at that. Of course most say I am unconventional.

[d4rkh00d]

Thanks a lot Qioazhi

[Mike(Mont)]

Q,
I did enjoy reading about the ferrite rod, etc. I've said it before there is something about the ferrite rod I swear it pulls the signal in--makes a pathway for the signal to travel on. In the past I have used the tin can and string telephone analogy.

Something like what happens with the solar wind at times,what they call a magnetic superhighway. I'm not saying there are particles, just the magnetics. So, yeah, I don't know what i am talking about, but there is something. Like they say, when you get outside of the crowd you can see from a different viewpoint. For sure, I have the outside part down real good.

[Mike(Mont)]

Curious about the ferrite rod iron rejection. I have not experienced this with my contraption, just like to know about the cause of this problem. Someone on the forum asked me about this so I offered to help them.

[Mike(Mont)]

No problem, don't bother. Whoever asked me, I do not trust them.

[d4rkh00d]

Hello guys,

I just wonder to where this jumper (in red circle) connected?

[Qiaozhi]

Originally Posted by d4rkh00d

Hello guys,

I just wonder to where this jumper (in red circle) connected?

On the schematic it shows only one connection from U3 pin 1 to LED1. I think this may have been left over from tests made during development of TOTeM, and it's no longer required.

[AurumKid]

Is it OK to replace CA3240 with LM1458?

[Qiaozhi]

Originally Posted by AurumKid

Is it OK to replace CA3240 with LM1458?

The pinout is identical, and there's no special reason for using a CA3240.
So the answer is "yes".

[d4rkh00d]

Originally Posted by Qiaozhi

On the schematic it shows only one connection from U3 pin 1 to LED1. I think this may have been left over from tests made during development of TOTeM, and it's no longer required.

Thanks Qiaozhi

[AurumKid]

Originally Posted by Qiaozhi

The pinout is identical, and there's no special reason for using a CA3240.
So the answer is "yes".

Thanks Qiaozhi

[abdou2014]

Mr Qiaozhi , is that totem detect the gold on ground like métal detector or just buried long time ?

[HaFar2010]

Hello
Dear All.

Finally, I was able to create the PD-Pistol correctly. In following, there are two videos from my PD, which my clients sent me from their successes.

https://www.youtube.com/watch?v=glYeB84xJkM

https://www.youtube.com/watch?v=HYhp1b8LqP4

[Qiaozhi]

Originally Posted by HaFar2010

Hello
Dear All.

Finally, I was able to create the PD-Pistol correctly. In following, there are two videos from my PD, which my clients sent me from their successes.

https://www.youtube.com/watch?v=glYeB84xJkM

https://www.youtube.com/watch?v=HYhp1b8LqP4

I see that you've managed eventually to register ok, so welcome to the forum.
At first I thought you might be a spammer who was trying to register with multiple fake email addresses, but it appears that there was some other problem.

Well done on duplicating the TOTeM project. I notice that you have modified the design somewhat, and included a DVM on the front panel. Is this something you would like to share with the forum, since this is an open-source project?