Hi Attila! My network is about 50 meters long and I've got 22 sensors (currently). I don't use diodes or resistors for connecting. My Connectors are 4-pin (mostly from cd-audio cables) with this layout:
- 5V - N/C - GND - 1Wire The not connected pin is used as key to prevent wrong insertion of the plug. Each device has a 2x4 pin header, so I can daisy chain them. (but of course, this requires soldering). I use prototyping PCBs such as [1] To solder the ds2406 and ds2408 I use old floppy/ide cables, they have just the right size to connect to the pins of the chips. I also think it's time to make some images of my boards ;-) This is my current list: * ds18s20 temp sensors * ds2406 switches for sensing (using relays, schmitt triggers) * ds2406 switches for switching 230V using solid state relays * ds2408 switches to sense if my windows are open (using reed relays) * ds2408 switches to drive two LCD displays Still to come: * ds2450 or ds2438 adc to measure light (using a small solar panel) * ds2423 counter which should get connected to a rain sensor best regards, Markus [1]: https://www.ssl-id.de/leds-and-more.de/images/Zubehoer/Lochraster-Platine160x100.jpg On Nov 8, Attila <[email protected]> wrote: > Hi Guys, > I'm just creating my 1-wire bus, and looking for some practical advices here > - how to connect the devices to the bus? > 1-wire recommendation says that a schottky diode and a resistor is highly > recommended to use for each "leg" (which has to be as short as possible, > <1m). I'm planning to build a 30m long, 20 sensor bus based on CAT5E. Will I > need to > use the diode and resistor, or will it enough for me to just plainly connect > them without any additional electrical components? > > And what kind of connector do you use to add the devices? Which is easy to > build, and easy to repair - and robust enough. In my prototype I use a > wall-mount UTP connector, with 2 UTP slots. Bus comes in one slot, and goes > forward on > the other using normal UTP pach cables - of course, I connected the > appropriate pins of the two slots on the back of connector PCB. When I want > to add a new sensor to this "node", I just insert these wires to the knives > (where > normally the wall UTP cable connects). I can install up to 6 sensors to one > node with this. > However, I'm not completely satisfied with this solution. I'd like to avoid > soldering - how you do it, what do you recommend? > > Thank you, > > Attila > > -- __________________ /"\ Markus Gaugusch \ / ASCII Ribbon Campaign markus(at)gaugusch.at X Against HTML Mail / \ ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_nov _______________________________________________ Owfs-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/owfs-developers
