[OT] iButton Help

["Jamie Bennett" <jamie.bennett@xxxxxxxxx>]

I know some on the list have/do use iButtons so I thought this would
be the best place to ask.

I've been reading about iButtons and their usage recently and I would
really love to use them around the home. My first project would be to
use an iButton on a keyfob for identification just as you enter the
house. The iButton would be used to retrieve relevant information for
that person such as how many emails are waiting for them, outstanding
appointments/tasks e.t.c. What is the best iButton for this? A
DS1990A?

My second use would be for temperature monitoring. I'm in the process
of installing CAT5e to the bedrooms for ip camera's and would love to
add temp monitoring as I am doing it. Am I right in guessing that I
need the DS1920 for this?

Also where do I get the hardware from? The US or is there somewhere
here in the UK that I can use?

Any help would be appreciated as I'm an iButton virgin ;)

Thanks,
Jamie.



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