Next week I need to put all wires on my house's walls before plasters. I need to decide how I'm going to link my wall push buttons to my arduino board. The best way, a direct wire from the button to the arduino, would be the most reliable and simple way. But for some reasons I have to make a bus for places where I can't put enough wires.
I saw that the DS2408 One wire component would do the trick (see http://www.maxim-ic.com/app-notes/index.mvp/id/4849), but as far as I know One Wire suffers from slow speed. Could somebody tell me wether the latency of a DS2408 would be acceptable for a ceiling light push button use (in normal mode, not the parasitic one) ? Is there another "cheap" component that could do the trick?
Thanks by advance