On 02/11/2014 02:10 PM, Colin Reese wrote: > Yes, but I don't have to talk to the RFM. I can talk to the ATMega.
I am not following; what do you mean by "I don't have to talk to the RFM"? If you want to send data wirelessly then someone has to talk to the RFM. That'd be the microcontroller. So you (the RPi) talks to the uC and the uC talks to the RFM. On the other side (remote sensor side) the uC only talks to the RFM. I guess I'm missing something... Cheers, Eloy Paris.- > > > > > On Tue, Feb 11, 2014 at 11:05 AM, Eloy Paris <pe...@chapus.net > <mailto:pe...@chapus.net>> wrote: > > Hi Colin, > > On 02/11/2014 01:14 PM, Colin Reese wrote: > > > Crap. This thing runs on SPI? I've got all my SPI allocated. > > Yes, the RFM12B (and the new RFM69) has an SPI interface. > > SPI allows for multiple slaves; you do need an independent SS signal > from the master for each slave device, though. > > Cheers, > > Eloy Paris.- > > > > > > > On Tue, Feb 11, 2014 at 4:21 AM, Eloy Paris <pe...@chapus.net > <mailto:pe...@chapus.net> > > <mailto:pe...@chapus.net <mailto:pe...@chapus.net>>> wrote: > > > > Colin, Stuart, > > > > On 02/10/2014 10:30 PM, Colin Reese wrote: > > > > > Anybody chime in with status on this? I think this will be > where I > > > go. > > > > > > On 2/10/2014 06:47, Stuart Poulton wrote: > > >> To be fair, I would have thought this was the ideal > application > > >> for > > >> > > >> http://owfs.org/index.php?page=external-sensor-design > > >> > > >> Not sure where Paul is with support etc, if it even exits. > > > > I believe that what you are trying to achieve (small wireless > sensors > > that are cheap, can run on batteries for month or years, and can > > potentially be integrated with OWFS) is the holy grail of data > > collection in a small environment like our homes. We all have > done > > something similar with 1-Wire in one way or the other but > 1-Wire uses > > wires so sometimes we are limited in where we can place our > 1-Wire > > sensors. > > > > I also have been looking at ways to solve this. I've done > some work > > using ATmega 328 and RFM12B wireless transceivers and think > that it is a > > good and very cheap option (for new developments I'd look at > the RFM69). > > I think Xbee is too expensive, especially when considering > that the > > RFM12B is a very viable option. Raspberry Pi and anything > running Linux > > is overkill and too power hungry for this application, in my > opinion. > > > > I suggest you look at two options you can buy "off the shelf": > > > > 1. Moteino > > > > 2. JeeNodes > > > > These two have the RFM12B integrated with the ATmega on a > small board. > > > > That solves the hardware problem. The issue then becomes a > software > > issue... > > > > I do not think anyone has been successful in integrating a > non-1-Wire > > device with OWFS via owexternal. I can tell you that I tried > but didn't > > find that it was ready for prime time. I just couldn't get it > work and > > moved on to another way to build a wireless sensor network > (using xPL, > > which shows some promise, but I still think it would have > been nice to > > be able to integrate it with OWFS). > > > > Anyway, here's a discussion from July of 2013 when I was > trying to get > > owexternal work: > > > > > > http://owfs-developers.1086194.n5.nabble.com/External-sensor-support-td9779.html > > > > As you can see from the discussion, at the time I probably > was the first > > person to give this a try, and the discussion didn't end in > anything. > > > > Please keep us posted on this as it's a very important topic. > > > > Cheers, > > > > Eloy Paris.- > > ------------------------------------------------------------------------------ Android apps run on BlackBerry 10 Introducing the new BlackBerry 10.2.1 Runtime for Android apps. Now with support for Jelly Bean, Bluetooth, Mapview and more. Get your Android app in front of a whole new audience. Start now. http://pubads.g.doubleclick.net/gampad/clk?id=124407151&iu=/4140/ostg.clktrk _______________________________________________ Owfs-developers mailing list Owfs-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/owfs-developers
