W dniu 19.11.2012 o 22:18 Steinar Midtskogen <[email protected]> pisze:
> [email protected] writes: > >> There's a MS-Windowsprogram coming with the device which shows the >> distances nicely, so in principle this should work. >> I assume that measuring snow depth should not be much of a problem, but >> cannot verify at present time :-) > > If I had read the item description better, they claim that it can be > used to measure snow depth. Or rather the Sensorbus-cm-IP64 module. > It seems that the only difference between the Sensorbus-cm and > Sensorbus-cm-IP64 is the housing, but I find the price difference a > bit too large to jusitfy that, 79 vs 239 euro. My German isn't the > best, though. Do I miss something? > >> Btw, how many write cycles would the DS18S20 scratchpad withstand ? > > I think it's 100,000? But the DS18S20 is cheap and probably easy to > replace. So there is a microcontroller that reads data from the ultrasonic sensor and then somehow writes it DS18S20? It has to have some kind of switch to temporarily disconnect it from 1-wire bus while writing. There can't be 2 masters on one network. But I think that making an microcontroller just emulate DS18s20 would be an easier(and cheaper) solution so probably there is no real DS18S20 inside. All above are just my suspicions maybe it works some other way. -- p4trykx ------------------------------------------------------------------------------ Monitor your physical, virtual and cloud infrastructure from a single web console. Get in-depth insight into apps, servers, databases, vmware, SAP, cloud infrastructure, etc. Download 30-day Free Trial. Pricing starts from $795 for 25 servers or applications! http://p.sf.net/sfu/zoho_dev2dev_nov _______________________________________________ Owfs-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/owfs-developers
