Proxmark3 community

Research, development and trades concerning the powerful Proxmark3 device.

Remember; sharing is caring. Bring something back to the community.


"Learn the tools of the trade the hard way." +Fravia

You are not logged in.

Announcement

Time changes and with it the technology
Proxmark3 @ discord

Users of this forum, please be aware that information stored on this site is not private.

#601 2014-05-09 08:53:57

benoit37000
Contributor
From: France
Registered: 2013-10-10
Posts: 21

Re: proxmark3 gerbers and bill of material

Received my PM3 from Gaucho

Thanks a lots for you work and the community help smile
Perfectly working

Offline

#602 2014-07-18 03:38:44

gbhuk
Contributor
Registered: 2012-09-20
Posts: 33

Re: proxmark3 gerbers and bill of material

gaucho wrote:

just for exercise i modified the board shematic, to see if i can do it cheaper.
You find it here: proxmark3.1.pdf
Here what i did:
-removed C8 (it was only 1nF and it's in parallel with a 4,7uF capacitor C9!!)

Hello gaucho. I'd be interested in collaborating on an alternative h/w version of the PM3 (if you're still planning it after your marathon build!).

I'm an electronics engineer by education and training but the time I have available to work on personal projects may be limited.

The link to your proposed alternative schematic is broken. Is there an alternative link?

Also - with regard to your proposal to remove C8 I'd advise against it. The two capacitors are in parallel and one may therefore seem to be redundant, but they perform slightly different tasks. The 4.7uF cap smooths the PSU but can't really decouple HF noise from the power line.  That's done by the 1nF cap.

A quick explanation here: http://www.capacitorguide.com/coupling-and-decoupling/

Offline

#603 2014-07-19 08:15:17

gaucho
Contributor
From: France
Registered: 2010-06-15
Posts: 444
Website

Re: proxmark3 gerbers and bill of material

Gbhuk, interesting.
Please read this all. http://www.proxmark.org/forum/viewtopic.php?id=1607&p=2
I have to find the pdf but on that thread there is the description of my idea.

Offline

#604 2014-08-19 04:40:47

kwx
Contributor
Registered: 2013-11-26
Posts: 46

Re: proxmark3 gerbers and bill of material

Hi all.
I am working on manufacturing some PM3s; the factory is unable to obtain some parts:

1. Can the AT91SAM7S512-AU be replaced by its successor, version B?
2. Can the OMRON Relay in RLY1 be replaced with Panasonic TQ2SA-5V?

Thanks in advance smile

Offline

#605 2015-04-13 05:04:17

perimbean
Member
Registered: 2015-04-13
Posts: 6

Re: proxmark3 gerbers and bill of material

Hi gaucho!

   Reading through the posts I understand you've spent considerable time and effort in getting the boards made.

   Will there be any chance that you'd be letting go of any/reproducing any? I'm interested to get my hands on a unit.

   Thanks!

Offline

Board footer

Powered by FluxBB