Pistol Detector - TOTeM (Complete Details)

[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/2014/10/long-range-metal-detector-pd-totem.html?m=1

[aft_72005]

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 .

[omar]

https://www.raed.net/file?id=563004

[aft_72005]

https://www.raed.net/file?id=563004

Thank you.

[omar]

You're welcome. Good luck

[Yusufyaba]

You're welcome. Good luck

hello omar
I made an application suitable for your project but with pcb holes. I could not solve the LED situation. It seems to work. There is detection as the tx power is reduced and the frequencies change. It is a workshop environment, not a natural environment.

[omar]

Frankly, this modification needs the support of someone who has successfully tried the device with a similar modification. For example, how much transmission power is appropriate for capacitively coupling the coils with the ability to balance and adjust the threshold. Is shielding the sensing phase binding? What is the correct direction of the current in the two coils? presented to you the idea and the path others took in developing it, and it seems that they succeeded in the operation process. Now it's up to you to try it. I hope that whoever succeeds with this amendment will help the rest of the members.

[Anwar2]

Frankly, this modification needs the support of someone who has successfully tried the device with a similar modification. For example, how much transmission power is appropriate for capacitively coupling the coils with the ability to balance and adjust the threshold. Is shielding the sensing phase binding? What is the correct direction of the current in the two coils? presented to you the idea and the path others took in developing it, and it seems that they succeeded in the operation process. Now it's up to you to try it. I hope that whoever succeeds with this amendment will help the rest of the members.

hello Omar imade this TOTEM but its prduce the 65khrz frequincy but i cant balance tx and rx its work with sparks need some one show as by vedio how to balance it imade:https://youtu.be/9xdu1eedKZk

[aft_72005]

Hi

does the totem really work in practice as a long range.. Has anyone discovered old metal with the totem?
there isn't any report totem work as long range

[abdou2014]

must change the TX circuit

[aft_72005]

must change the TX circuit

totem TX without problem .. why transmitter must change ?

[omar]

Hi

does the totem really work in practice as a long range.. Has anyone discovered old metal with the totem?
there isn't any report totem work as long range

Hello my friend .
Anyone who wants to try this device.
First, he must make a receiving circuit with only the receiving coil and test the device according to the operating instructions in the file attached to the first post in this topic, such as sensing the electric spark... etc. After making sure your device works very well and there are no problems or errors in assembly or parts. You go to the second step, which is manufacturing the transmission circuit and adding it to the receiver. I do not advise anyone to manufacture this device, but there are people who want to try this device (for them I am providing this information) to help them and make things easier for them and to make the appearance of the device more dynamic and acceptable. Because I think something useful can come out of this device. I will post pictures and links explaining my idea regarding the device?s narrow-band antenna. And manufacturing methods.

https://youtu.be/9gjUlqH9dTQ?si=ZddyPDx97yvPaMZF

I wish everyone good luck and thank you