Paul:

> Periodic polling is the best way.

So are you saying that if I have an iButton base on my network, I have to be 
constantly running through a 1-Wire directory search and looking for the button?

So if I wanted to use this to open a door, and wanted reasonable response time 
I’d have to be doing a 1-W directory search multiple times per second?  It 
sounds unreasonably CPU intensive.



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