Marc MERLIN <[email protected]> writes: > On Tue, Aug 02, 2011 at 03:23:54PM +0200, Steinar Midtskogen wrote: >> Hello >> >> A lightning strike recently fried a couple of my 6 port 1-wire hubs, >> so I need to do some shopping. Since owfs (still?) has some issues >> with these hubs, I'm considering a new approach: to use big USB hubs >> and loads of DS9490R adapters instead. By "loads" I mean around 16 or >> so. > > What's wrong with the hub support, I haven't quite noticed problems with > mine yet.
It's been discussed on the list before (a couple of years ago?). It got better, but is still there I think (I tried the latest version a couple of months ago). It seems quite timing dependent and related to frequent requests and big networks. I have a program using the C api which creates a lot of traffic to owserver. My problem has been that devices suddenly become unreadable and eventually owserver dies. I have weather stations at three different location, and have had the problem at all three locations. Eventually I've found a combination of owserver version and network topology that is stable for each location and managed. You probably need quite a few devices to get the problem. Unfortunately, my big 1-wire networks are all production systems, so I haven't been able to spend much time to debug this. > I know this also doesn't answer your question, but I recommend you go > wireless for your weather stuff. Yes, wireless is great for isolating the effects of lightnings, but I have a lot of custom sensors using 1-wire. It's only three years ago another lightning fried my 1-wire network and computers, so what I did after that was to add surge protection on every wire leaving the house, and to run owserver on a device connected to my network by wifi only. Now I've a lot of broken surge protectors and a dead wifi box, but at least some 1-wire devices survived (about 40 out of 60), my computers are ok and the house didn't burn down. [Paul Alfille] > Sorry about the blown hubs. Good news about owserver with multiple buses, > however. Great! Another advantage of using multiple buses is that a short on one bus then wont affect the others as it would using a hub. -- Steinar Midtskogen http://voksenlia.net/met/ ------------------------------------------------------------------------------ BlackBerry® DevCon Americas, Oct. 18-20, San Francisco, CA The must-attend event for mobile developers. Connect with experts. Get tools for creating Super Apps. See the latest technologies. Sessions, hands-on labs, demos & much more. Register early & save! http://p.sf.net/sfu/rim-blackberry-1 _______________________________________________ Owfs-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/owfs-developers
