Hi Todd, On 01/10/2012 09:47 PM, Todd Turner wrote:
> I'm looking at having temp sensors in different locations in the house > using the already existing cat 5e cable. > > I'm planning on using a twisted pair for 5V, Gnd, a pair for 1 wire/ > Gnd and a pair for the 1 wire / Gnd coming back from the remote > slave. > > I've got a reference for the master side of the circuit but not sure > what to do at the slave. Do I need any other components at the slave, > or can I get away with just the temp sensor? No components are needed on the slave side; the DS18x20 temperature sensor is enough. My home 1-Wire network uses my cat5 network infrastructure, and I connect the DS18B20s just like you describe, although all my sensors are parasitic powered, i.e. I am not sending 5 volts through one of the pairs of the cat5 cable. I use a LinkUSB master, though, so I don't know if you'd have problems with a homemade master. Cheers, Eloy Paris.- P.S. If you end up going with parasitic power then remember to ground the Vdd pin on the DS18B20s. ------------------------------------------------------------------------------ Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex infrastructure or vast IT resources to deliver seamless, secure access to virtual desktops. With this all-in-one solution, easily deploy virtual desktops for less than the cost of PCs and save 60% on VDI infrastructure costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox _______________________________________________ Owfs-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/owfs-developers
