My TOTeM project

[Goldmaxx]

GoldMAxx

Analyzing the schematic and PCB are changed LED2 and D1.

PCB R19 TO LED2, SCHEME R19 TO D1.

PCB R25 TO D1, SCHEME R25 LED2.


What is the error in the PCB or Schematic totem

Hi DrTech
Oh yes you are right, this will be a transposed digits in the schematic.
But it is important that you build it according the PCB, thereafter I have built up my PCB and also works perfectly.
Although it is actually no matter, because they are both the same resistors and therefore not a real error.

Qiaozhi, can you check that please?

[Goldmaxx]

Today I have made a little test in the passive mode.
I can detect with the TOTeM in passive mode without any problems my TV on a distance of 5 meters and more.
How much more, I can not say, because the room is not larger than 5.5 meters.
I do not know at what distance it can detect with other PDs, but I find that it is already a very impressive performance.
But I must always say, the building of my TOTeM is not completely finished and the test conditions in the house are very bad.

[Qiaozhi]

GoldMAxx

Analyzing the schematic and PCB are changed LED2 and D1.

PCB R19 TO LED2, SCHEME R19 TO D1.

PCB R25 TO D1, SCHEME R25 LED2.


What is the error in the PCB or Schematic totem

It looks like the reference designators have been swapped over in the schematic, but as Goldmaxx pointed out, it doesn't make any difference as R19 and R25 are both 100R.

[Morgan]

Today I have made a little test in the passive mode.
I can detect with the TOTeM in passive mode without any problems my TV on a distance of 5 meters and more.
How much more, I can not say, because the room is not larger than 5.5 meters.
I do not know at what distance it can detect with other PDs, but I find that it is already a very impressive performance.
But I must always say, the building of my TOTeM is not completely finished and the test conditions in the house are very bad.

hello

very good TOTeM construction,and the performance seems to promise very good results when is time for the field tests. Hope the weather become better.

good luck

[Goldmaxx]

hello

very good TOTeM construction,and the performance seems to promise very good results when is time for the field tests. Hope the weather become better.

good luck

Hello Morgan

nice to hear from you, I hope you are well.

Thank you for your praise and good wishes, I will you any case tell how good the results are.
But I am very curious myself.

We any case hear from us.

best regards

[humhum]

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]

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]

I need you totem project

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]

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]

Hi humhum

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

Regards

Thanks for information.

Regards.

[vali]

Learn

hi to all

[bureaupro2000@yahoo.com]

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

[Qiaozhi]

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]

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]

Thanks for information.

Regards.

Hi humhum

Sorry for my late reply.

No problem for information, you're welcome.

Regards