OWFS on $WRT-router

Chris lists at proquariat.de
Mon Feb 4 00:11:23 CET 2008


I tried this: http://owfs.sourceforge.net/WRT54G.html and it doesn't 
work for me.

It looks really weird how the author connected the DS2480B, which runs 
at 5V directly to the UART, which provides only 3.3V. I think this would 
need some level-shifting.
The datasheet also says the POL-Pin (Pin6) has to be tied to +5V if 
directly connected to the UART.

I made a small schematic with some resistors as level shifters: 
http://img228.imageshack.us/img228/4611/ds2480bwrtmp0.png but I don't 
think I like it. It's said that doing level shifting is very power hungry.

Any better ideas?


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