Pistol Detector - TOTeM (Complete Details)

[folharin]

this circuit used a resonance from a local radio station...from the old days

[Brahimolayt]

Hello, i made this circuit ,and i can get fm radio station vhf 96.7 Mhz by tuning the receiver coil capacitance and adding just the audio amp section. It is also sensetive to electromagnetic anomalies

[kostas87]

Originally Posted by Brahimolayt

Hello, i made this circuit ,and i can get fm radio station vhf 96.7 Mhz by tuning the receiver coil capacitance and adding just the audio amp section. It is also sensetive to electromagnetic anomalies

hello Brahomolay !Very nice, what changes have you made to the pickup coil and audio stage?

[Brahimolayt]

Originally Posted by kostas87

hello Brahomolay !Very nice, what changes have you made to the pickup coil and audio stage?

Hi my friend. Sorry for not being here often.indeed I can catch that radio station by playing with the coil inductance and preamplifier frome radio .

[Mt724]

Hello Mr. Qiaozhi I hope you are well, I want to make one of your circuits, I only have this photo, thank you for giving me more details to make the circuit. Connecting the coils to the circuit, and a photo of the ready circuit, etc.) Thank you in advance

[Mt724]

[Qiaozhi]

Originally Posted by Mt724

Hello Mr. Qiaozhi I hope you are well, I want to make one of your circuits, I only have this photo, thank you for giving me more details to make the circuit. Connecting the coils to the circuit, and a photo of the ready circuit, etc.) Thank you in advance

Look at page 1 of this thread, post #1. All the details are there.

[Mt724]

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!

Thank you very much, I meant another circuit board, I don't know how to send the picture of the board, the picture of the board has not been uploaded.

[Mt724]

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!

I meant this board, link address:
thanks a lot

https://www.scribd.com/document/4629...chematic-V1-19

[Qiaozhi]

Originally Posted by Mt724

I meant this board, link address:
thanks a lot

https://www.scribd.com/document/4629...chematic-V1-19

Here is the full schematic ->
There are no PCB details.

[Mt724]

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!

Ok, thanks

[Dubulumach]

Sch V1.19 have several errors.
Tuning of this LRL is very-very difficult. I don't recommend building.
Thats all.

[Jeg]

Originally Posted by Dubulumach

Sch V1.19 have several errors.
Tuning of this LRL is very-very difficult. I don't recommend building.
Thats all.

Hi brother, is there any version of this pistol that you recommend with no circuit errors?


Thank you

[Qiaozhi]

Originally Posted by Dubulumach

Sch V1.19 have several errors.
Tuning of this LRL is very-very difficult. I don't recommend building.
Thats all.

The schematic you're referring to (V1.19) is for the Alonso Pistol Detector. There are no errors in the schematic, but there are a lot of unknowns regarding the setup.


Note that this thread is for the TOTeM Pistol Detector, and all the details are in post#1. TOTeM is not difficult to tune, and there are no errors.


If you want to discuss the Alonso PDK, then please start a new thread.

[Jeg]

wrong thread sorry

[omar]

It seems that this device can be operated for infrared detection. Make the transmitting circuit independent and put a variable resistor to facilitate changing the frequency until it matches the resonance of the receiving unit. It seems that it is possible to balance the coils on a single ferrite in some way while reducing the transmission power of the coil. I'm not sure, unfortunately I didn't make the device. I try to simplify it for amateurs and get rid of unnecessary accessories that will pose a problem for some.

[omar]

https://www.raed.net/file?id=442126

[Yusufyaba]

Merhaba ?mer

So how will this happen?
TX and RX will work on the same ferrite. How to connect IR RX?
Is there a way to remotely detect when the tx coil is vibrating?
We need an explanation for those who don't know

[omar]

Unfortunately, my friend, I do not know why I tried the device, but I found praise for its work. See the attached video. I think it is a commercial version of the device. They found a way to set the files to one fret and the device became physically decent. His work has not changed and he discovers new and old metal. The method of adjusting the coils and resonance frequency is the most difficult in the device, as it determines its operation and the metals with which it will interact. It seems to be a mixture between a metal detector and a radio, I don't know.


https://youtube.com/shorts/5dKEP4Y-8...-xdCFytbQgsxDh

[Yusufyaba]

okay omar

There is a sound analysis program for androids called Spectroid, listen to your ferritin and look at the result (of course, a phone is required) you will understand how much our measuring instruments are misleading us.
Then think about the resonance-related dimensions of the ferrite length. Why couldn't we find this program before?

[folharin]

I had built the totem! but it didn't achieve good results.. I hope that with the modifications it will be really effective!!

[omar]

I have improved the drawing a little and got rid of the connections. You may need to shield the sensing stage. It appears that the transmitting coil and the receiving coil are capacitively coupled to operate at one frequency, and thus this process increases the sensitivity to the resonant frequency. You may need to raise the value of the variable resistance to facilitate the adjustment process. Anyway, as you know, nothing is guaranteed in this field .

[omar]

https://youtu.be/iL7t6Rae1yM?si=ul1ffOy5GGoF8igO

[omar]

The drawing I present is one-sided. Perhaps this post will help you, my friend, and help others. It contains useful information about this device.



https://palmosdetect.blogspot.com/20...totem.html?m=1

[aft_72005]

Originally Posted by omar

I have improved the drawing a little and got rid of the connections. You may need to shield the sensing stage. It appears that the transmitting coil and the receiving coil are capacitively coupled to operate at one frequency, and thus this process increases the sensitivity to the resonant frequency. You may need to raise the value of the variable resistance to facilitate the adjustment process. Anyway, as you know, nothing is guaranteed in this field .

Hi Omar
please upload PCB sprint file .