A couple of questions 1 - How are you going to handle sleeping nodes, OWFS by its nature polls the 1-wire bus. 2 - You may want to consider sample frequencies, obvious I know the faster you sample, the shorter the battery life.
Based on my own work with a combined atmega328 and RF module, and TMP112 i2c sensor, with a 60 second sample time, I can easily get 2 years of life of 2xAA Alkaline. I'm testing the same setup with a DS18B20, which interestingly was still returning readings at 2.72v until the BOD on the 328 sent the sensor node into a reboot loop. Stuart On 2 Jan 2014, at 19:12, Colin Reese wrote: > From what I've read, the series 2 are capable of mesh networking and low > power mode, provided the unit is not a router or coordinator. I believe > anything in a mesh that is not an end node cannot go down to a low-power > state, by virtue of it needing to listen and relay from other nodes. > > I understand that I don't 'need' 1wire for many purposes, but I like the > flexibility, and am convinced that without too much pain I can get an > attiny85 to do the legwork and make it happen. The price point is about $17, > which (given other options) I find quite reasonable. > > I'll let you know how I get on. Please do the same. > > Colin > > >> On Jan 2, 2014, at 9:53, Pedro Côrte-Real <[email protected]> wrote: >> >>> On Fri, Dec 20, 2013 at 7:58 PM, Colin Reese <[email protected]> wrote: >>> Hello all, >>> >>> I've seen fragments here and there about wireless 1wire networks, but >>> nothing that sticks out as developed and/or inexpensive. Anybody have >>> success with IO over wireless, be it zigbee, sdr, or otherwise, to >>> something like an RPi? >> >> A while ago I looked over the same fragments and bought two Xbees and >> tried to do it. I could never get the Xbee UART to work with 1wire and >> haven't touched it since. I'll probably not go back to Xbee/Zigbee >> unless they make mesh networking much better. Last time I checked >> Zigbee doesn't support it and Xbee has a proprietary setup that >> requires boards to be always on which makes it unworkable for >> low-power situations. >> >> My next approach is actually WiFi. There are these wifly modules with >> a xbee footprint: >> >> https://www.sparkfun.com/products/10822 >> >> They talk wifi and have much the same ports as the Xbee (UART, ADC, >> DAC), so you can also do a bunch of stuff directly without 1wire at >> all. They also support a mode where the connection is initiated by the >> module. So you can have a server on AC power and have the battery >> powered module periodically connect to the server. Whenever the module >> is not talking to the server it powers itself down to a very low >> consumption. Make the cycle long enough and you can use this for low >> power situations even though it uses Wifi. >> >> I see that Xbee itself has wifi modules now: >> >> https://www.sparkfun.com/products/12569 >> >> So maybe those allow the same kind of setup as well. >> >> Pedro >> >> ------------------------------------------------------------------------------ >> Rapidly troubleshoot problems before they affect your business. Most IT >> organizations don't have a clear picture of how application performance >> affects their revenue. With AppDynamics, you get 100% visibility into your >> Java,.NET, & PHP application. Start your 15-day FREE TRIAL of AppDynamics >> Pro! >> http://pubads.g.doubleclick.net/gampad/clk?id=84349831&iu=/4140/ostg.clktrk >> _______________________________________________ >> Owfs-developers mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/owfs-developers > > ------------------------------------------------------------------------------ > Rapidly troubleshoot problems before they affect your business. Most IT > organizations don't have a clear picture of how application performance > affects their revenue. With AppDynamics, you get 100% visibility into your > Java,.NET, & PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! > http://pubads.g.doubleclick.net/gampad/clk?id=84349831&iu=/4140/ostg.clktrk > _______________________________________________ > Owfs-developers mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/owfs-developers ------------------------------------------------------------------------------ Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, & PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831&iu=/4140/ostg.clktrk _______________________________________________ Owfs-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/owfs-developers
