Nathan Schmidt wrote:
>
> Hello all,
>
> Has anyone looked into using the iButton cans (www.ibutton.com) from Dallas
> Semi? They use a 1-wire interface which probably would work with a PIC,
> though there may be some issues dealing with the 115kbit/sec transfer rate.
> These things seem like a great application of the PIC, which could provide
> a gateway to real-world elements using the DS1990 as an authentication
> tool. Am I totally wrong here? Sorry, I've been lurking in this group for a
> while, and haven't made the leap from Stamps to PICs, so I'm not really
> familiar with the throughput possible with an entry-level PIC.
>

I already done that .
if you need any info , code or such stuff drop me a line
btw the 115 kbit /s is not a big deal because you literally have to pull
every
single bit out of that can .
so it's as fast as you wish it to be . at 4MHZ a pic16c84 can handle all
the
protocols needed by those little creatures
if you don't need many button online even the addressing can be stored
in eeprom


bye
charley