I-button

Robert Harris bob at bobthecomputerguy.com
Wed Mar 13 20:48:35 GMT 2002


Has anyone had any experience with the Dallas Semiconductor I-button and
1-wire technology?

I-buttons are sealed weather proof memory chips - up to 64kbits of data - in a
stainless steel pill that are accessed by 1-wire communications.

1-wire communicates at up to 142 kbits off a single pin on a 68hc11 for
example.

I-button $ 20 or less, reader $-15 some wire.  App notes on programming free,
windows reader software free.   

Looks like a complete data extraction system for home made DIY-EFI for under
50 bucks.

1-wire to USB, Serial or CAN adaptors $ 20.

Also allows expansion devices like A/Ds and thermostats.


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