MPP Beach REV-E

[ivconic]

Qiaozhi's clam that this can detect single coin in soil at 30cm attracted my attention.
So i want to see the schematic.
PROPERLY drawn Q. !!!


Like this one:


Sweet.
Only need GEB channel.
When?

Also offered pcb design is true war crime!
I will draw my own.
It will take time.
In meantime Q. if you have GEB update; feel free to let me know!

[Qiaozhi]

Schematic and Gerber files are here -> MPP Beach REV-E

[ivconic]

Schematic and Gerber files are here -> MPP Beach REV-E

Yes i know, you misunderstood me.
I went on that page and downloaded all.
Than i don't like the way how schematic is drawn; so i drawn my "vision" of how schematic should look like.
Schematic i posted above is the schematic you posted on that link, just is drawn on my way. The way much easier to see and analyze it... at least for me. Can't tell about the others.
I drawn that schematic today, between two posts.
Also i don't like the pcb design (war crime it is), and decided to draw my own pcb too.
It is shame that this design is not having GEB feature.

[ivconic]

I could steal GEB part from GS/TDI schematics and add to this one, the MPP.
But problem is; i don't like how the GEB is done at GS/TDI, at all.
So i will have to figure out something better.

[6666]

I could steal GEB part from GS/TDI schematics and add to this one, the MPP.
But problem is; i don't like how the GEB is done at GS/TDI, at all.
So i will have to figure out something better.

How would you add geb what is your idea , very interested !

and yes I like the way you draw your schematics.

[green]

Change gain of second sample not sample time. Use same time for target and ground samples.

https://www.geotech1.com/forums/show...059#post264059

[ivconic]

How would you add geb what is your idea , very interested !

and yes I like the way you draw your schematics.

That's though one.
Easiest would be to add what's missing from GS/TDI circuitry.
Not possible on existing pcb.

[ivconic]

It would go something like this:



This is just adhoc Copy&Paste "projecting".
Now i would need real help from Qiaozhi or any other conversant fellow member to correct this schematic and make it proper.
This is just a suggestion.

[6666]

It would go something like this:

[ATTACH]49014[/ATTACH]

This is just adhoc Copy&Paste "projecting".
Now i would need real help from Qiaozhi or any other conversant fellow member to correct this schematic and make it proper.
This is just a suggestion.

Oh, wow I did not expect you to draw anything but thanks, so looks like we will be useing something like TDI, 4 sample system

[ivconic]

Let's face it; without GEB option: MPP still belongs to "small PI" projects like SurfPi and Barracuda ... and many other lookalikes.
Once you add it GEB; it will become serious PI.
Only correct and tested approach to do this so far is what Eric did on Gold Scan.
So i was skim adding that part, doubling the first channel.
Adhoc Copy&Paste, like i said.
Now it need more conversant expert to analyze this and correct few points.

[Polymer]

Yes i know, you misunderstood me.
I went on that page and downloaded all.
Than i don't like the way how schematic is drawn; so i drawn my "vision" of how schematic should look like.
Schematic i posted above is the schematic you posted on that link, just is drawn on my way. The way much easier to see and analyze it... at least for me. Can't tell about the others.
I drawn that schematic today, between two posts.
Also i don't like the pcb design (war crime it is), and decided to draw my own pcb too.
It is shame that this design is not having GEB feature.

Hello Ivconic.

Thank you for making a real & good schematic of the MPP that is easy for my mind!
The "modern" schematics I usually find make knots in my brain.

I also agree with your perception of the layout crimes - the finished PCB so far is a good start to get going though.

With what program do you make your schematics and PCB layout?

I am asking, because the last PCB software I used was 20 years ago and called Protel 98.
That was very easy for me to learn and I made very good PCBs for production.

The modern programs I have looked at for layout 20 years later - I find them very, very complicated.
I am more geometric designer (by sizes and shapes) than by part numbers etc ...

I would also like to have a new MPP PCB with other size, layout & changes, but have not found a software I can do this with easily.

Cheers, Polymer

[ivconic]

Hello Ivconic.

Thank you for making a real & good schematic of the MPP that is easy for my mind!
The "modern" schematics I usually find make knots in my brain.

I also agree with your perception of the layout crimes - the finished PCB so far is a good start to get going though.

With what program do you make your schematics and PCB layout?

I am asking, because the last PCB software I used was 20 years ago and called Protel 98.
That was very easy for me to learn and I made very good PCBs for production.

The modern programs I have looked at for layout 20 years later - I find them very, very complicated.
I am more geometric designer (by sizes and shapes) than by part numbers etc ...

I would also like to have a new MPP PCB with other size, layout & changes, but have not found a software I can do this with easily.

Cheers, Polymer

In time i picked pretty uncommon combination of software to work with.
Good is my witness; i tried them all.
In DOS time i struggled indeed much with DOS version of Eagle.
Later on with Protel too, several versions, ending with EDA Client.
And just as i lost any hope; i stumbled on Sprint Layout 3 (at the time).
Soon after there was version 4 release. And soon after version 5.
Sprint Layout 5 is totally perfect for all my amateur works.
In meantime appears version 6 too.
So now i am having 5 and 6 installed on my system.
Mostly using version 5 and rarely version 6.
Version 6 opens all the previous versions and i am using it only when manipulate with gerbers.
For drawing still using version 5.
As for schematic layouts... this is weird; i am using SCH part of ExpressPCB 7.5 package (separate pcb and sch layout in the package).
Don't ask me how come and why; i simply founded myself in those software.
ExpressSCH is just easy that can not be easier. Sprint Layout 5 too.
Probably the best feature at both is in possibility to easy and fast make your own macros and components.
So in time i generated pretty decent libraries mostly with customized macros and components.
If it works alright; why change it?
Especially if it fulfills all the needs in process of making documentation.
Easy and fast. Compatible outputs. Etc.
It is just matter of personal preferences. And habits.
Most important; simpler software is giving you much more freedom. Simple as that.
...
As for the schematics... i got used on one standard form of drawing schematics and i simply can not stand to watch in something which is done differently.
Simpler the schematic is drawn - the better.
When you have "block" (principal) diagram of some electronic circuit in front of your eyes; easiest for brain is to see the same logic in schematic layout.
Open just any patent and see the first few figures in it; usually drawn as "block diagram". Divided stages and functionalities.
Than imagine schematic layout with exactly the same logic... and voila!
I think my method is easiest one. Although i am pretty sloppy and never do it completely "by the rules" (which rules? btw).
On the other side; there are schematics drawn such horribly that makes me immediately sick on first look.
Too many crossed lines, all the power and ground points connected with lines etc... Total mess. Crazy spider net!
On second thought; that's very effective way to obfuscate the document.

[Polymer]

Ivconic, thank you so much for your detailed and passionate reply!

I'm back from travelling and can now start testing the softwares you mention.

I am still wondering why the "modern" schematics made by software(?) (not human) are often so difficult to read ... grrr

Right now I'm trying a new way of making fully waterproof coils with shield for my MPP. More when I finish testing.

How are your experiment with GEB for MPP going?

Cheers, Polymer

[Polymer]

Ivconic, Sprint Layout is great for me and the price is very, very reasonable.

Thank you for that tip!

[Polymer]

Qiaozhi's clam that this can detect single coin in soil at 30cm attracted my attention.
So i want to see the schematic.
PROPERLY drawn Q. !!!


Like this one:
[ATTACH]49005[/ATTACH]

Sweet.
Only need GEB channel.
When?

Also offered pcb design is true war crime!
I will draw my own.
It will take time.
In meantime Q. if you have GEB update; feel free to let me know!

Had a closer look at your well drawn schematic.

I have found maybe a mistake/betterment/other version of the MPP?

Take a look at the resistors around R24 (220k pot) AUDIO.

I am comparing this to version E of the MPP.