Help for PD3200

[Sean_Goddard]

I HAVE programmers (now, I bought one this weekend) and enought kit to build ANYTHING I want. I have THREE fully functional kits WITH fully programmed micros in them but.... YOU ARE WRONG..sorry

The Atmel AVR's in common with all single chip micros, have a CODE PROTECTION BIT in them which, when set STOPS you from reading the code. I DO know a way to POSSIBLY hack them, but it CAN, and usually does, DESTROY the chip.

Ergo, if I DO attempt to read the chip, in the way I would have to, I stand a 90% chance of destroying the device, and as it is not possible to get more, why would I risk that?

[Sean_Goddard]

Check this out >> http://www.cl.cam.ac.uk/~sps32/mcu_lock.html looks like the Atmel AVR are failrly easy to hack. MUCH easier than the PIC micro. so I'll have a go sometime.

I can email you the hex file so postage is not a problem.

[Nik]

I HAVE programmers (now, I bought one this weekend) and enought kit to build ANYTHING I want. I have THREE fully functional kits WITH fully programmed micros in them but.... YOU ARE WRONG..sorry

The Atmel AVR's in common with all single chip micros, have a CODE PROTECTION BIT in them which, when set STOPS you from reading the code. I DO know a way to POSSIBLY hack them, but it CAN, and usually does, DESTROY the chip.

Ergo, if I DO attempt to read the chip, in the way I would have to, I stand a 90% chance of destroying the device, and as it is not possible to get more, why would I risk that?

Dont know what Im wrong about, I was asking a question not making a statement with regard the kits you bought, thanks for answering anyway.

Ofcourse you wouldn`t want to destroy the chip, and if the method you use or know of gives you only a 90% success rate, then DONT do it, there are other ways that are safer.

Yes the article you mentioned is an interesting read.

Ill send you an email to establish contact.

Regards
Nik

By the way, great website(pulsar-elect.) you guys have there.

[Sean_Goddard]

Hi Nik,

Sorry if my answer seemed a little "off". I thought I'd explained the security bit thing in a previous post and the same question was being asked again. Reading your post again I see that you had asked a different quiestion. Sorry, my bad .

Tnx for the nice comments about my website. It needs updating badly, but I don't have the time.

I look forward to your email, I like to work with people to help them improve designs, although I don't always get things right, it's fun trying .

[Geo]

I am interesting for the PD3200 software

Hi Sean .
If you accomplish reading and to copy the data from the Atmel chip I would want from you to send it to me.
Regards

Btw........ do you have the details of the PD3200 coil ????

[kt315]

hi Geo, I have also the files from the site you need. the PCB photos, html etc. give me a link on files exchanger I could be transfer it to you.

[Leto]

..PD3200 -coil

Originally Posted by Geo
Btw........ do you have the details of the PD3200 coil ????

Hi Geo,
coil for PD3200 should have:
less than 1ohm resistance
less than 400uH inductance ->
If you go over this limits P-channel mosfet can become very hot.

I use usually 0.75mm2 threaded wire.

[Geo]

Hi KT315 . I need coil details and original software. Now i have pcb files .... schematic and demo software. If you have coil details or full software you can sent it to me at [email protected]
Thanks
Now for Leto.........
Hi Leto . Yes i know what you say but i want exactly the details of coil. At one PI detector all the coils must have the same industance but the dc resistance (and the wire) must change with the diameter of coil (other wire for 10in coil and other wire for 40 or 80 in).

My Regards

[Nik]

Cheers Sean, sent you email.

Any others need files or want to see the original PD3200 site, check the following links (while they`re still there I guess). there for all.

http://web.archive.org/web/200601120...s/demosoft.htm

http://web.archive.org/web/200601120...roject_eng.htm

http://web.archive.org/web/200601120...es/pcb_eng.htm

Regards
Nik

[Geo]

Thanks Nik ...... very good.
In the site that you post i found everything except this that i am interesting now. The coil details. But never mind ...... what to do. we know the other way........ experiment.
My regards

[Leto]

coils..

Geo,

You can use large variety of coils for PD3200 - depends on what you want.
.. there is no recipie for one and only best coil...

Kasnimir gave folowing data for suitable coils:
1) Diameter 38cm, 20 turns, 1mm-PVC insulated wire (390uH)
2) Diameter 25cm, 25 turns, 1mm wire (380uH)

I've made lots and lots of coils just for experimenting with PD3200,
and my best coil is spider-web wound, 25cm diameter, 310uH, threaded wire 0.75mm.
results -> 50 Eurocents at 35cm!

But as you say: experimenting will be the best to find out what you want.

[Shahab]

Geo,

You can use large variety of coils for PD3200 - depends on what you want.
.. there is no recipie for one and only best coil...

Kasnimir gave folowing data for suitable coils:
1) Diameter 38cm, 20 turns, 1mm-PVC insulated wire (390uH)
2) Diameter 25cm, 25 turns, 1mm wire (380uH)

I've made lots and lots of coils just for experimenting with PD3200,
and my best coil is spider-web wound, 25cm diameter, 310uH, threaded wire 0.75mm.
results -> 50 Eurocents at 35cm!

But as you say: experimenting will be the best to find out what you want.

Hi Leto.

Please write more about spider-web wound, 25cm diameter, 310uH,

threaded wire 0.75mm.

[Geo]

Hi Leto .
Thanks for your answer. Very very good .
Do you have the manual of PD3200
My Regards

[Geo]

Geo,

I've made lots and lots of coils just for experimenting with PD3200,
and my best coil is spider-web wound, 25cm diameter, 310uH, threaded wire 0.75mm.
results -> 50 Eurocents at 35cm!

But as you say: experimenting will be the best to find out what you want.

I think that is time to play again with coils .
My Delta Pulse detects a 2 euro at 28...30cm max ....max . Or i must modify it for lower delay (now it haw 30us) or both of them
Bye

[Leto]

Hi Geo,

For now I found only paper-copy of the manual for PD3200.
If someone has original .pdf file please post it here.

Normally the main time delay for PD3200 is 30..50us and depends on induction and Q of the coil, also the time of sampling is long (time to integrate the incoming signal).

Only change I made to the original were newer low-coss FETs.
Also the mosfet resistance Rds(on) should be as low as possible.
I used two paralleled ZXMP4A16G mosfets.

Another thing: flat wound coils (or spider-web, or Basket weave and alike) really
are much better for low frequency PI's as the shielding is not mandatory.