ITMD3 is now available on Amazon

[Repwoc]

Just a minor thing - the url in the footnote at the bottom of page 113 is no longer valid - the page seems to have moved to https://accelinstruments.com/Magneti...alculator.html .

[Carl-NC]

The book link still works but if you include the end-of-line hyphenation that will mess it up. Your link is for their coil calculator, the book link is for the field calculator.

Add: I just edited the footnote so the URL completely fits on the line, for the 3.04 update. Thanks.

[Repwoc]

I did omit the end-of-line hyphen. I just tried it again and got a 404 error. Then I corrected the case, ie capitalised Magnetic/Coil-Calculator instead of all lower case. Amazingly that worked. I've worked in IT for 34 years and didn't know that URLs could be case-sensitive. I suppose Linux/UNIX file systems are case-sensitive so in hindsight perhaps it's not surprising.

The link I posted goes to a page entitled "Magnetic Field Calculator for Coils and Solenoids".

[Carl-NC]

Hmmm, I've never known URLs to be case sensitive either.

[Repwoc]

Are there Gerber files available for the Magnetic Field Probe?

[Zephyr]

Amazing book, I wish I had known of it earlier. Thanks for sharing your knowledge!

[dbanner]

What I make from this book won't even buy bus fare to Tahiti

Your book should be in every public and state library around the world. Both public and state libraries routinely purchase books in various formats (physical and digital).
These acquisitions are crucial for maintaining and expanding library collections.

Libraries often purchase books in bulk from publishers, agents, and sometimes even local bookstores.

Your book (ITMD series) is very unique. It is a fantastic book.

You need to call your agent and get on it ASAP.

Whoops, he might be on vacation in Tahiti.

[Carl-NC]

You need to call your agent and get on it ASAP.

I keep calling myself but the phone is always busy.

[BostonBrooks]

Are there Gerber files available for the Magnetic Field Probe?

Hi all,

I've just finished reading ITMD3. This is an excellent book. I'm not entirely new to electronic engineering but I am new to designing metal detectors. I think I should make the Magnetic Field Probe first. Has anyone completed this project? Can you please provide design documents?

Kind regards,
Boston

[rickodetrader]

Just received a copy from Amazon $88 AUD. Bargain. Worth every cent in that it saves you time searching and figuring out how it all fits together., bringing you "up to speed". In that respect it is priceless for anyone wanting to learn and learn quickly. The book pieces togther the different concepts found on this forum and the internet/youtube into one place. Mostly every topic is explained in great detail with plenty of hints, suggestions and pictures.

You have done a great job Carl and George, cannot thank you enough! It's simply a masterpiece!

To anyone thinking about buying but not sure, I say buy it. You will not be dissapointed one bit, you will be glad you did and maybe (like me) regretful you didn't buy it sooner If you are a metal detectorist with an interest in engineering your own detector this book will be one of your greatest finds!

[mustafayilmaz]

Hi, can I buy or read the digital version of this book?

[Qiaozhi]

Hi, can I buy or read the digital version of this book?

The encryption on e-books is too easily hacked.
As Carl will no doubt tell you, there will never be an ITMD3 e-book.

[ivconic]

I agree, that wouldn't be fair to our more than good and hardworking friend Carl.
If it were someone else, whom I don't respect so much; "e-book" would have appeared in the world a long time ago!
Just kidding of course, this didn't sound right of course.
But I didn't want to say that, but you, George, provoked a "light bulb" in my head and I got an idea!
For several years I have developed a code, an algorithm and a whole library (which I regularly update) for encrypting any text or even meaningless processions of symbols.
It is a (hopefully) very advanced encryption method (no hacks so far) but written in such a way that it does not consume too many hardware resources.
I wonder... if that encryption could be applied to E-books, Kindles, etc.
The strong encryptions known so far are too demanding on resources and this is perhaps the only reason why they have not been used often.
I don't know, this is just my guess and thinking out loud... maybe something could be achieved there?

[ivconic]

And then I continue to analyze the situation... potentially a hacker; he wouldn't have to hack the data, it's enough to take a picture of the registered text with a camera... hmm... problem!
Because it is a book, a regular customer has to see it in order to read it.
So the decrypted text will be visible on the display, right?
Then in that case encryption doesn't make any sense.
This becomes interesting for further analysis!
The combination of such encryption with some advanced hardware technology, for example; a display that when a picture is taken with the camera; it will not give a clear or even visible picture!
The question is, are there things that the human eye can easily and clearly see and the camera cannot?
And another question; if it were possible to make such technology: could it be produced very cheaply?

[ivconic]

There is one crazy solution, but it's more interesting than useful.
And it's easy to overcome.
Any PC monitor can be "remade" so that it gives a "white" image on which nothing is visible.
It is enough to disassemble the monitor and remove one of the background layers (I don't remember the exact details, it was a long time ago).
And then stick part of that material on ordinary glasses and only the person wearing those glasses can see a clear image on the monitor.
It's an interesting gag dating back 20 years or so... But useless in this case.