My TOTeM project

[humhum]

Originally Posted by Goldmaxx

In the next step I'm going to install the TX coil and calibration it.
Then my first PD would be finished already.

Hi GoldMaxx , in Which side of PD you Put this Tx Coil , Up-Down-Left-Right-Front or Back side.


Regards.

[Goldmaxx]

Originally Posted by humhum

Hi GoldMaxx , in Which side of PD you Put this Tx Coil , Up-Down-Left-Right-Front or Back side.


Regards.

Hi humhum

I put the TX coil to the front side of the PD.
Look at the picture.

Regards

[iron1944]

Dear Qiaozhi.

Can you help me? Installation of Totem Pistola's almost over. But I could not find Tx and Rx coil to wrap the coil wire 0.56. Gotta few rounds to wrap the coil wire coil Tx 0.55? Wire coil to coil 870 uH 0.55 for Rx Gotta few rounds? Waiting for emergency assistance.

Thank you.

[Qiaozhi]

Originally Posted by iron1944

Dear Qiaozhi.

Can you help me? Installation of Totem Pistola's almost over. But I could not find Tx and Rx coil to wrap the coil wire 0.56. Gotta few rounds to wrap the coil wire coil Tx 0.55? Wire coil to coil 870 uH 0.55 for Rx Gotta few rounds? Waiting for emergency assistance.

Thank you.

The wire diameter of 0.56mm is not important. You can use whatever you have available, as long as you achieve the same value of inductance.

[humhum]

Originally Posted by Goldmaxx

Hi humhum

I put the TX coil to the front side of the PD.
Look at the picture.

Regards

Thanks for information.

Regards.

[vali]

hi to all

[bureaupro2000@yahoo.com]

Hello Qiaozhi
What inductance should have, TX coil?
Bs.Reg.,

[Qiaozhi]

Originally Posted by bureaupro2000@yahoo.com

Hello Qiaozhi
What inductance should have, TX coil?
Bs.Reg.,

The TX inductance is approximately 1mH, which results in the tank circuit being tuned to about 50kHz. The 555 timer drives the coil at 65kHz, so the actual coil inductance is not critical. As mentioned in the text, it is left to the reader to experiment with tuning the TX and RX coils into resonance.

[bureaupro2000@yahoo.com]

Originally Posted by Qiaozhi

The TX inductance is approximately 1mH, which results in the tank circuit being tuned to about 50kHz. The 555 timer drives the coil at 65kHz, so the actual coil inductance is not critical. As mentioned in the text, it is left to the reader to experiment with tuning the TX and RX coils into resonance.

I'll build it so, then experimenting resonance coils.
Thanks for the reply

[Goldmaxx]

Originally Posted by humhum

Thanks for information.

Regards.

Hi humhum

Sorry for my late reply.

No problem for information, you're welcome.

Regards

[Goldmaxx]

Originally Posted by vali

hi to all

Hi vali
thanks for the note, but have already installed the TX coil.

Regards

[Goldmaxx]

And here is my status quo.
The TX coil is mounted, connected and it works well.
Thereby my TOTeM PD is completely, except for the calibration of the coils.
I have tried to calibrate the coils in the house, but has not brought satisfactory results.
At the spark test, I could locate the spark only on a distance of about 1.5 m.

Qiaozhi
In this setting I can detect a gold or silver ring in about 8 - 10 cm from the Tx coil.
Is this value okay, or must even be more?

Our weather is crazy, it's still very cold and it snowed again today.
I must calibrate the coils outdoors, in the house are too many interference sources. I hope that the weather will be better so I can get outdoors.

Here are the current pictures

[Qiaozhi]

Originally Posted by Goldmaxx

And here is my status quo.
The TX coil is mounted, connected and it works well.
Thereby my TOTeM PD is completely, except for the calibration of the coils.
I have tried to calibrate the coils in the house, but has not brought satisfactory results.
At the spark test, I could locate the spark only on a distance of about 1.5 m.

The spark test is only an indication of the sensitivity to external EMI. Since your main purpose is not detecting sparks, the actual distance is not important.

Originally Posted by Goldmaxx

Qiaozhi
In this setting I can detect a gold or silver ring in about 8 - 10 cm from the Tx coil.
Is this value okay, or must even be more?

I would consider this to be very good. If you watch some of the Mineoro videos, you will note that their pinpointing detection range (in air) is not as good. In Chapter 13, page 213, Carl shows a photo of his Mineoro FG80, and states that "FG" stands for "Fresh Gold", even though the device is incapable of detecting the test sample that comes with the unit.

Have you also noticed, when testing TOTeM, how the ring is only detected at the front-end of the ferrite, but there is no response from behind the unit?

In fact, you have a better sensitivity in the air test than my prototype. I switched on my TOTeM today and found that the meter was "zeroed" three-quarters of the way across the scale, so I probably need to recalibrate it.

[humhum]

Hi Friend Goldmaxx, How is Discrimination for All Metals,
Do have Real Disc. when you put kind metals to Front side of Totem ?

Congratulations for your best PD device.


Regards.

[Goldmaxx]

Originally Posted by Qiaozhi

The spark test is only an indication of the sensitivity to external EMI. Since your main purpose is not detecting sparks, the actual distance is not important.


I would consider this to be very good. If you watch some of the Mineoro videos, you will note that their pinpointing detection range (in air) is not as good. In Chapter 13, page 213, Carl shows a photo of his Mineoro FG80, and states that "FG" stands for "Fresh Gold", even though the device is incapable of detecting the test sample that comes with the unit.

Have you also noticed, when testing TOTeM, how the ring is only detected at the front-end of the ferrite, but there is no response from behind the unit?

In fact, you have a better sensitivity in the air test than my prototype. I switched on my TOTeM today and found that the meter was "zeroed" three-quarters of the way across the scale, so I probably need to recalibrate it.

Hello Qiaozhi

yes those are very good news.
I thought, because the book is in there, one could locate the spark test up to a distance of 3m. Then 1.5 m would be too little.
But if it is not so important, then is it better.

I must say that I myself was amazed because first he detected nothing, and when I calibrated the coils, he showed me in fact to gold and silver.
It is incredible that there really is a zero point and can only be located in this position noble metals. I must say that I was totally fascinated.
I'll watch the videos Mineoro definitely.

I have tested the rings unfortunately only on the front-end of the ferrite and not at the rear end. But I will test it in the next calibration, and report it you.
But unfortunately I'm going tomorrow for 4 days on vacation and only thereafter can you give the answer. That interests me now myself. Please be patience until then.

That's very good to hear that the sensitivity is good. I will try for the next calibration, if I can adjust it even more sensitive. Therefore I will try it outdoors to calibrate the device.
I think because the PD is so sensitive that it detect in passive mode in the house even if I turn on-off the light switch and it could be adjusted better outdoors.

But how can this happen with your Prototype that the calibration moved?

The red circle in the picture shows where I could detect the rings the best.

[Goldmaxx]

Originally Posted by humhum

Hi Friend Goldmaxx, How is Discrimination for All Metals,
Do have Real Disc. when you put kind metals to Front side of Totem ?

Congratulations for your best PD device.


Regards.

Hi humhum

Thanks for the congratulations.

The discrimination is surprisingly very good.
When I use the TOTeM in normal tune, he actually detected only gold and silver.
But if I him tune critical, so I have the best sensitivity, he showed me iron after a long delay.
I tried it with pliers, what has a much greater mass than the rings.
But if I take a gold or silver ring, and move it in front of the coil, the totem indicates him immediately.

Regards

[Morgan]

Originally Posted by Goldmaxx

Hi humhum

Thanks for the congratulations.

The discrimination is surprisingly very good.
When I use the TOTeM in normal tune, he actually detected only gold and silver.
But if I him tune critical, so I have the best sensitivity, he showed me iron after a long delay.
I tried it with pliers, what has a much greater mass than the rings.
But if I take a gold or silver ring, and move it in front of the coil, the totem indicates him immediately.

Regards

This is amazing results for the ToTeM

we waiting for the field test


regards

[Qiaozhi]

Originally Posted by Goldmaxx

But how can this happen with your Prototype that the calibration moved?

I don't know the answer at the moment, and will not be able to take a proper look at the prototype for a couple of weeks.
Keep up the good work.

[humhum]

Originally Posted by Goldmaxx

Hi humhum

Thanks for the congratulations.

The discrimination is surprisingly very good.
When I use the TOTeM in normal tune, he actually detected only gold and silver.
But if I him tune critical, so I have the best sensitivity, he showed me iron after a long delay.
I tried it with pliers, what has a much greater mass than the rings.
But if I take a gold or silver ring, and move it in front of the coil, the totem indicates him immediately.

Regards

I think that when you make critical Adjust with Coil , if found Iron, your device have problem with Zero point, and need again adjust.

Regards.

[Morgan]

Originally Posted by humhum

I think that when you make critical Adjust with Coil , if found Iron, your device have problem with Zero point, and need again adjust.

Regards.

i sugest he will try the totem like it is now,and if not work fine in the field,them make the other calibrations.
maybe it is good like it is.

[DrTech]

Can someone help me with a graph, such as adjusting the coil Ferrite TX and RX.

Distance, separation ....

Adjustments that I have to do???

Alguien me puede ayudar con una grafica, como ajustar la bobina TX y la Ferrita RX.
Distancia, separacion....
Que ajustes tengo que hacer????

[Goldmaxx]

Originally Posted by Qiaozhi

I don't know the answer at the moment, and will not be able to take a proper look at the prototype for a couple of weeks.
Keep up the good work.

Hello to all,

I came back from my vacation yesterday and have the same done some testing with my totem.

I have the PD re-calibrated and come back to the same result as before.

Qiaozhi
I can in fact detect the ring only at the front end of the ferrite.
I have no reaction behind the ferrite.
But I have to correct myself, I can detect the ring one at a distance of 6-7cm from the front end of the ferrite. I remeasured it again.


Maybe I found the solution for your problem from the TOTeM
When I tried to re-calibrate the TOTeM, I took a new 9V block battery.
The result was, I could not properly calibrate the PD and above all, he could not detect no ring or anything near the ferrites.
I took a battery holder with 6 x 1.5 V batteries with the same results.
After long try, I took the old 9V block battery and surprisingly, I was able to calibrate the PD very well again.
I then measured the voltage of the batteries and the result was:

9V block battery old : 8.22 V
9V block battery new: 8.94 V
6x 1,5 V battery : 8.73 V

Then I tested the TOTeM with 5x1,5V battery to operating (7.35 V), with the result that the PD worked.
So, I think that the problem is the voltage, unless I have an error on my PCB, but what I really do not think so.

Qiaozhi, could you please check with your TOTeM?
I would be interested if it is the same with your TOTeM.

[Goldmaxx]

Originally Posted by Morgan

i sugest he will try the totem like it is now,and if not work fine in the field,them make the other calibrations.
maybe it is good like it is.

Hi Morgan
you're absolutely right. The weather is getting better and I'm going with PD in the next few days with this calibration in the field testing.
As soon as I results, I will report here.

[Goldmaxx]

Qiaozhi
with the low voltage of + - 8V, can be calibrated the TOTeM esay by the yellow LED.

[Goldmaxx]

Originally Posted by DrTech

Can someone help me with a graph, such as adjusting the coil Ferrite TX and RX.

Distance, separation ....

Adjustments that I have to do???

Alguien me puede ayudar con una grafica, como ajustar la bobina TX y la Ferrita RX.
Distancia, separacion....
Que ajustes tengo que hacer????

Hi DrTech
sorry but you must the distance with calibrate find out yourself, because each ferrite coil reacts differently and most importantly,
you will be a different distance to the TX coil as I have.
I can therefore give you no distance, because I do not even know if mine are correct.
This will to prove only in the field test.
But you must the RX coil (ferrite) try to find the zero point to the TX coil.

Regards