While the devices haven't yet been released, I feel compelled to say that there is surprising new interest in (3rd party) 1-wire devices. I know of some that will have PWM, motion, barometers, ADC and the like. Wait a few weeks.
Paul Alfille On Thu, Jan 7, 2010 at 6:01 PM, njh <[email protected]> wrote: > On Fri, 8 Jan 2010, Rob Conway wrote: > > > Why doesn't dallas have any analog type output chips ? Does anybody > > actually control anything which requires an analog style output ? > > I get the feeling that 1-wire has not been the success desired outside a > few small niches (battery montoring, electronic barcoding and security > tokens I think). As we have discussed in the past, the signalling system > is marginal for the applications it is promoted for (remote sensing) due > to the common ground and low tolerances. These issues are magnified > greatly for output applications resulting in any practical 1wire output > requiring its own powersupply, at which point you wonder why not just use > a more standard protocol such as 422 or ethernet with far greater > robustness. I've also found that the advantage of using just two wires > isn't great in practice as the cheapest wire tends to be cat 5. If you > have 4 twisted pairs there are many better options available. > > For short runs i2c is vastly more available. I think the biggest loss was > losing the dual ported memory 1wire which allowed for arbitrary pic or > arduino slaves. dallas seems keen to prevent that kind of application. > Another useful output device would have been an i2c master 1wire slave. > > So I suggest that if you want to do output look for a different protocol. > On that note, perhaps owfs should start thinking about generalising to > support other networks? We have a beautiful design which would be useful > for other applications. > > njh > > > ------------------------------------------------------------------------------ > This SF.Net email is sponsored by the Verizon Developer Community > Take advantage of Verizon's best-in-class app development support > A streamlined, 14 day to market process makes app distribution fast and > easy > Join now and get one step closer to millions of Verizon customers > http://p.sf.net/sfu/verizon-dev2dev > _______________________________________________ > Owfs-developers mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/owfs-developers >
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