Comments on: Parts: 1K 1-Wire EEPROM (DS2431)

By: GCL

GCL — Wed, 09 Nov 2011 12:57:56 +0000

To reiterate.
There is no simple method to do that.

By: GCL

GCL — Wed, 09 Nov 2011 12:56:38 +0000

The only way you can do that is by connecting the both to your adapter, DQ leads go to the hot lead and GND to the ground one. The sheet for the adapter will say which ones they are. Software on the host should enable you to copy the contents from one to the other.

To explain completely is not possible here.

By: LaVa

LaVa — Wed, 09 Nov 2011 07:00:38 +0000

Hello guys.
I want to read data from one DS2431 and write it to another one. I have read this post but i can’t understand how i should connect the 1-Wire usb adaptor (and wich pin of it)to the circuit, what is the materials of the circuit, how they are connected between them and more or less how do i make happend and work this nice idea..
Exist somewhere these information for download them?
Regards friends

By: keith

keith — Sun, 23 Oct 2011 19:03:49 +0000

hiya gents
read this post with interest, has any work been done with the ds2502u
i have a ibutton which i need to replicate purely for lab purposes,does not have to be replicated in ibutton format
be very grateful as to know if i am chasing a dead duck or not

cheers
keith

By: Peter

Peter — Tue, 23 Aug 2011 06:35:46 +0000

One question, how to write second 8bytes, after sucessfully written first 8bytes in above example…how write to scratch pad and copy to eeprom commands should look like??? ofcourse with bus pirate interface… :)

By: Peter

Peter — Fri, 05 Aug 2011 04:52:59 +0000

Ok, thanx for quick reply :) At least data can be copied, so we will see what happens… :)

By: ian

ian — Thu, 04 Aug 2011 16:06:07 +0000

And the unique 64bit ID will never be duplicated.

By: GCL

GCL — Thu, 04 Aug 2011 15:57:03 +0000

Not without copying the data to the host computer and then writing to the next device in the chain.

By: Peter

Peter — Thu, 04 Aug 2011 05:50:56 +0000

Is there any chance to copy from one ds2431 to another, actually to clone them??? also is this possible with bus pirate??? or is it possible to resset ds2431 with buspirate??? thanx in advance :)

By: James

James — Mon, 13 Jun 2011 20:36:43 +0000

So I’ve got the data off my DS2431 (SN). Is there a way to just copy the data from one to another? I want to duplicate the card I already have. Do I just rewrite the memory from the one I have to the empty one?

By: KillerSpud

KillerSpud — Wed, 01 Jul 2009 04:52:50 +0000

@gcl
Half the reason HAD published this article is to publicize the bus pirate.
putting that aside, the bus pirate is designed to be capable of doing many types of serial formants. 1, 2, and 3 wire, as well as rs-232, and possibly some others with firmware updates.
Now, when I buy that nifty I2C widget, I don’t have to spend an hour or two programming a uC, I can just hook it up and manipulate the raw data directly from a terminal.

By: gcl

gcl — Wed, 01 Jul 2009 00:03:05 +0000

Hello!
Uh, I see I am still there, but here goes:
Why is the bus pirate used? Maxim makes excellent devices to access the bus, and naturally software is available. GPL covered for the http://www.owfs.org and of course Maxim publishes their own entries.

By: GCL

GCL — Thu, 01 Jan 2009 16:06:31 +0000

HAH!
Try using them under Linux, and an actual One-Wire adapter. http://www.owfs.org does that and more. I should know I happen to be a member.

By: andre

andre — Wed, 24 Dec 2008 23:21:53 +0000

hehe..now all they need to do is make a 1 wire PIC :-) with integrated RGB LEDs on the unused GPIO lines.

Call it the SmartLED, and use it for large area addressable displays. Bonus if you can program it using IR light while holding its Vcc at +11V (which the internal regulator steps down to +5V Vcc)

By: Curtisbeef

Curtisbeef — Wed, 24 Dec 2008 20:50:11 +0000

There are 3 wires in fact… But only 1 is used for Data. The other 2 being Vcc and Gnd. But it only uses 1 Wire for data so they call them 1 Wire…