Delta Pulse Sniffer X71 Working PCB

[Chamath]

I have spent the last few days with a number of questions about the Delta Pulse Sniffer X71. Of course it is still not resolved. Can anyone here provide a working pcb or schematic? I got the pcb online so I think there might be a defect in it.

However, I am still thinking about this question

I designed the pcb based on the image below . What is wrong here?

[GeoMax]

Hi Chamath,

the easiest way for you, since you are not experienced in electronics, is the following. Either to buy a ready made PCB with components soldered or the better option would be to buy a cheap oscilloscope and learn how to use it. A cheap new Hantek oscilloskope you can get already below USD 70,-. If you build a delta pulse from scratch, it is mandatory to have access to an oscilloscope. Without it is like let a blind person sort hundereds of resistor values by colour.

[Carl-NC]

GeoMax is correct. You have 2 things working against you: no oscilloscope, and little knowledge of electronics. Unless you get a proven design with a proven PCB and carefully assemble it, the odds of getting something to work are low. Even with a proven design, the chances of an assembly mistake are still pretty decent.

I have no idea if any of the schematics & PCBs you have posted are correct or not. I've never built a Delta. But even with a schematic that looks correct, it often requires building it to find any nuanced design defects, and that requires knowledge of what you are doing and proper tools (oscope).

[kt315]

i can certainly give pics, but why you Cham does not want to use SEARCH engine knob? this is not a design of mine. turkish guy did it. so i am not able to seek troubles in pcb.

[kt315]

..... ....

[Chamath]

i can certainly give pics, but why you Cham does not want to use SEARCH engine knob? this is not a design of mine. turkish guy did it. so i am not able to seek troubles in pcb.

Dear Mr.kt315,

I have seen devices designed like this before..

Can you provide details of a successful circuit? ( PCB )

[Chamath]

i can certainly give pics, but why you Cham does not want to use SEARCH engine knob? this is not a design of mine. turkish guy did it. so i am not able to seek troubles in pcb.

SEARCH engine knob? What does this mean? I'm not clear

[Chamath]

i can certainly give pics, but why you Cham does not want to use SEARCH engine knob? this is not a design of mine. turkish guy did it. so i am not able to seek troubles in pcb.

I saw that this device is well designed in the pictures you provided. The pcb is also visible. I compared it with the pcb I have.. I don't see any difference.

I still can't figure out what's wrong


All of the following are similar, right?

[kt315]

Dear Mr.kt315,

I have seen devices designed like this before..

Can you provide details of a successful circuit? ( PCB )

sorry, not. i am not following all projects that flying up around. no time on all.

[kt315]

All of the following are similar, right?

i give you a Manual. you have to read it.

[Chamath]

All of the following are similar, right?

i give you a Manual. you have to read it.

I read this article before and followed it. I also published this same article on this website at one point

[Chamath]

sorry, not. i am not following all projects that flying up around. no time on all.

Dear Mr.kt315

Give me the details of a successful device. I can follow it

[kt315]

I read this article before and followed it. I also published this same article on this website at one point

on every my pic/PDF you answer "i see/read this before". abnormal. so why you yet have not working DP if you have full data?
IMHO your way now is to buy soldered good working board and close this matter. no another way for you.

[Qiaozhi]

I saw that this device is well designed in the pictures you provided. The pcb is also visible. I compared it with the pcb I have.. I don't see any difference.

I still can't figure out what's wrong


All of the following are similar, right?

You seem to have a very masochistic approach to building a metal detector.
With minimal knowledge of electronics and no oscilloscope your chances of success are extremely low.

IMHO you should either buy a working detector, or take several steps back and start learning electronics from the beginning. It might even be fun ... and buy an oscilloscope.

[Chamath]

on every my pic/PDF you answer "i see/read this before". abnormal. so why you yet have not working DP if you have full data?
IMHO your way now is to buy soldered good working board and close this matter. no another way for you.

That's the problem Mr.kt315 I have.. even though everything is fine on the board, the problem is that it is not working properly.. I don't know if there is a problems with all ic. I have to get help from a friend of mine who has an oscilloscope