IDX-PRO+VDI

[Carl-NC]

I think so.

[h9361]

Try adding a switch from U7-pin1 to ground.

Thanks dear Carl
Is that correct?

[h9361]

this help?

Dear sir
Please forgive me
I want to add a switch between two/one tones.
Do you think it is correct?

[Carl-NC]

Try adding a switch from U7-pin1 to ground.

[h9361]

And finally, this schematic shows a 2-tone mod incorporated into the whole circuit.

Hello Dear All
I want to add a switch for selecting one/two tones in this schematic.
Do you have any suggestion?
Thanks

[h9361]

this help?

Thank you dear kt315

[Nightryder]

Hi everyone, I’m having trouble finding a White’s coil at 6.59 kHz for this project. Does anyone know if Chinese copies exist?

Wouldn't it work if you get any coil, a White made maybe for the sake of the plug, with higher frequency and just add more capacitors on the board to tweak it to the desired frequency? For some reason, I'm assuming the tuning capacitor is inside the coil. Otherwise, I would say just replace the tuning capacitor.

That was me learning through asking questions. Anyway, I think these models of White's run at 6.59 KHz : XLT, DFX, Classic series, TM 808 and coinmaster (I believe Google AI can name you more models that run at that certain frequency) Some of which you can have coils for from Detech or Mars websites

Also, you can order any specific coil from nexus official website but I think it's going to be pricey not to mention the coil plug might be different if you don't ask them to install a specific plug. So, I would make this my last option. Good luck!

[kt315]

this help?

[h9361]

Hello
Dear All
Please share a correct pic from nulling TX and RX.
I only could find the attached, is that true?
I can not find a correct picture on scope for adjusting phase TX and RX.
Pin-6 from U1 = Rx
Collector Q1 or Tx pin = Tx

[growdude]

Where do i find idx pro kit with vdi

[Cristiano]

Hi everyone, I’m having trouble finding a White’s coil at 6.59 kHz for this project. Does anyone know if Chinese copies exist?

[Carl-NC]

I'm confused... what will it detect, and what will it NOT detect? Do you have an oscope?

Edit: Try reversing the lead connections to the RX coil.

[Artyom]

Good evening, Mr. Carl, as I already wrote on the forum, gold is not detected; any metal can be discriminated. It seems that only aluminum, iron, and silver are not detected. The two sensitivity and discrimination potentiometers are not working. I don't know where to look for the problem.

Hi. There must be a phase shift in the device. Set the ground balance regulator to the middle position and by selecting containers up or down on the receiving coil, achieve a complete cut-off of the reaction to the ferrite target. I hope I explained it clearly.

[dgm]

Good evening, Mr. Carl, as I already wrote on the forum, gold is not detected; any metal can be discriminated. It seems that only aluminum, iron, and silver are not detected. The two sensitivity and discrimination potentiometers are not working. I don't know where to look for the problem.

[dgm]

Yes