complete project

[sido]

Hi Ian, thank you for that. Will shortly get in touch with you early next week. My small work bench is slowly taking shape now, just about up and running, bar a few test gear missing (still in storage).

Hi Tinkerer, thanks for posting the schematics. Looks interesting. Ground balancing could be a issue here, but worth a try. Will look into them soon.

BTW, will be offline for a few days, because my network provider (Voda) decided again to do some network changes here in Melbourne and not to happy. Time for a new provider me thinks. Talk to you all soon.

Regards Sido

[Tinkerer]

TINKERERS_SB_NM_PSU&TX

Below is the schematic of the TINKERERS_SB_NM_PSU&TX.

So we have now a complete metal detector design.

Tinkerer

[Tinkerer]

TINKERERS_SB_NM

Here is the RX of the TINKERERS_SB_NM.

SB_NM stands for SIMPLE BASIC NON MOTION.

This detector would be good for underwater use or very large coils and other uses where it is not practical to sweep the coil at a specific sweep speed.

A very simple design, no frills, bells and whistles, but deep searching, sensitive and reasonable iron discrimination.

Enjoy

Tinkerer

[Tinkerer]

Hi Tinkerer
Im also looking forward to seeing your two projects, if you or anyone here has sorted layfiles for it would be interested in making my own pcb for it to get the ball rolling so to speak.
Will the hex files be flash type or do we need to write them?
Anyways thank you very much for all your hard work put into this project.

Regards
Dave

There will be DESIGNSPARK PCB and Gerber files eventually, but there is still some work needed on that.

You can download the DESIGNSPARK software for free: http://www.designspark.com/ and give it a try yourself.

Tinkerer

[satdaveuk]

Hi Tinkerer
Im also looking forward to seeing your two projects, if you or anyone here has sorted layfiles for it would be interested in making my own pcb for it to get the ball rolling so to speak.
Will the hex files be flash type or do we need to write them?
Anyways thank you very much for all your hard work put into this project.

Regards
Dave

[IBGold]

I can supply the PCB component overlay and circuit and you are correct no solder mask on the Prototype boards and the supplier in Melbourne is where I get my boards from the power/supply board will I think be about a month or so away.

Regards, Ian. VK5KIB

Hi Ian, thank you for the generous offer, will take that up with you pending Tinkerer's approval.

I had a look on the net and found a reasonable priced supplier in Melbourne i think. Asking price for that size board around $5.00 each.

Not an issue with creating my own vias. Just wanting to know, will i receive the overlay parts placement documents if created or would i have to figure it out by comparing the schematic with the board......i am assuming there will be no solder mask.

How far off is the power supply PCB? Would most likely wait for that too.

Tomorrow i am digging out all my electronic parts and equipment, from storage, shed, garage etc. Got parts all over the place., so unorganized due to reno's.

Thanks again, all of this pending permission.

Regards Sid

[6666]

Thanks Tinkerer it will be interesting to see your basic design
thanks for sharing
6666

[Tinkerer]

Hi Sido,

With Tinkerers permission I could do a set of our prototype boards for you as I have all the art work and transfer envelopes for printing to Kalex Photo board only downside is they don't have vias so you have to solder links in if you want to send me 3 Kalex 150 x 100 D/Sided boards I will print and etch them for you all you will have to do is drill them the fourth board the Power-Supply is currently being laid out I am in S.A. so not that far away and being retired I have the time to play.

I also run a much modified SD2000M.

Regards, Ian.

Hi Ian,

of course you have my permission to make all the prototype boards you want.

I the next days I will also post the schematics and HEX files for a very SIMPLE BASIC detector, it comes in 2 versions:

The TINKERERS_SB-NM, for NON-MOTION or static detection.

And the TINKERERS_SB-M, for the MOTION detector.

The TINKERERS_SB's still go very deep and are very sensitive, but the FE discrimination is less perfect. They have a very simple GB, with just a 20 turn pot.

All the best

Tinkerer

[sido]

Hi Ian, thank you for the generous offer, will take that up with you pending Tinkerer's approval.

I had a look on the net and found a reasonable priced supplier in Melbourne i think. Asking price for that size board around $5.00 each.

Not an issue with creating my own vias. Just wanting to know, will i receive the overlay parts placement documents if created or would i have to figure it out by comparing the schematic with the board......i am assuming there will be no solder mask.

How far off is the power supply PCB? Would most likely wait for that too.

Tomorrow i am digging out all my electronic parts and equipment, from storage, shed, garage etc. Got parts all over the place., so unorganized due to reno's.

Thanks again, all of this pending permission.

Regards Sid

[IBGold]

Hi Sido,

With Tinkerers permission I could do a set of our prototype boards for you as I have all the art work and transfer envelopes for printing to Kalex Photo board only downside is they don't have vias so you have to solder links in if you want to send me 3 Kalex 150 x 100 D/Sided boards I will print and etch them for you all you will have to do is drill them the fourth board the Power-Supply is currently being laid out I am in S.A. so not that far away and being retired I have the time to play.

I also run a much modified SD2000M.

Regards, Ian.

[sido]

Got to get my desk/bench set up again to build the sub circuits. Have most parts at hand, just no room.

Regards Sid

[sido]

Hi Tinkerer, the last attachment is not clear, but is one of your circuit designs forgotten among many of your previous designs.

Yes a all rounder simple design would be ideal for the majority, but without a decent G/B, well here in Australia will become unusable, maybe ok at the beach, but on land will not work.

The audio circuit from the Sd2000 could possibly be simplified if using Paul's audio output pin of the UNIPI. In fact i remember Paul saying that the audio pitch increases in frequency with respect to target strength......

Regards Sid

[sido]

And this circuit done by yourself might work as a manual G/B.

[sido]

Hi Tinkerer, i am referring to the below circuit.

[Tinkerer]

Forgot to mention that Paul's UNIPI chip has a dedicated audio output with user frequency adjustment. Maybe we should work on the rest of the audio circuit based on that.

Regards Sid

Hi Sid,

thanks for the feedback.

could you post the circuits you are talking about? It would be a great help.

What and how is the SD audio circuit?

Which Tinkerer GB are you talking about?

The UNIPI and the Tinkerers circuits are mostly meant for experimenting and tinkering with a great multitude of variables. This can be very interesting to the experts and engineers familiar with the art.

I realize that there might be many others who would prefer to see a basic version of the detector, just to try the new technology.

If there is sufficient interest in it, I could be convinced to design a very simple, basic version and let somebody distribute it in kit version, including a pre programmed PIC.

Tinkerer