Matthias Urlichs via Owfs-developers > This might be a stupid question, but I do wonder why that board would > need a DS2409 in the first place. > > Do you have a circuit diagram? > > I'd simply skip that chip. Just connect pads 2, 3 and 4.
I don't have the circuit diagram, but I think you have a good point. I only need to access the DS2438Z whih is on the main channel, so connecting pin 2 and 3 should suffice. (I haven't yet tested whether the DS2438Z is working, though, and that one might have to be replaced as well). As far as I can tell, the only reasons why the board includes a DS2409 would be for grouping the installed sensors (temperature, humidity, solar), and to use pin 5 (CTRL) to light a led to indicate traffic. There is one catch, however, I use pin 5 as well to trigger the ultrasound sensor so that it only measures the distance when the DS2438Z is accessed. I can work around this, however, by making triggering the ultrasound sensor continously. I have a partial diagram, just showing what I did with the LP-THS when I built the snowdepth sensor: http://voksenlia.net/met/snow.php -- Steinar _______________________________________________ Owfs-developers mailing list Owfs-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/owfs-developers
