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

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…

By: Maj

Maj — Wed, 24 Dec 2008 20:25:25 +0000

Excuse me for not being an electrician but wouldn’t one wire for ground and one for power make it two wire?

By: Jerome

Jerome — Wed, 24 Dec 2008 16:30:34 +0000

Maxim has a super nice java base program to test directly your on wire device via the web. You need to have the serial to iWire converter. It is a integreted chip.

http://www.maxim-ic.com/products/ibutton/software/1wire/OneWireViewer.cfm

click the “Launch the oneWireViewer”

I have tested a iButton with some temperature and a switch. REally neat.