Hi Guys, Just joined the list, so - hello everyone!
Last year I've had some custom PCB's made (min order of 100 actually) for the DS28EA00 sensor to use in my new house to monitor the floor/room temperatures and control my underfloor heating system, that's powered by a wood-fired hot water boiler with various distribution manifolds and pumps etc. Having a background in industrial automation and control system I thought I'd try and be a bit smarter with the controls side of things and sprinkle a bunch of sensors around the house to have a better idea of the thermal load characteristics of the house and hopefully control it a bit better than with just a simple thermostat on the wall. However I did run some mains cables to where thermostats on the wall could go in case my grand plans fail... :( I have run 2 separate microLAN's using Cat5e UTP cable that will have about 20-30 sensors on each LAN. These LAN's run back to my central comms rack. I decided to keep the LAN's simple and linear as I need robustness and so I avoided going down the path of hubs etc to manage what would become a star network with it's associated impedance problems. I have 3 x LinkUSB adaptors (1 spare for a while) and an old Compaq Thin Client with a 2.5" 80G disk and Debian LXDE Linux installed. I'll use this initially to get things going and host a web server to display the various room temperatures on a nice graphs to assist with commissioning the system. Hopefully I will be able to move some or all of this to a diskless NSLU2 once things are all working. I also have a Clipsal C-BUS Lighting control system in my house and so I'll probably interface the two systems some time although I think it's best to keep all the heating system control in one system from a robustness point of view. So I'll probably just interface the control of the pumps and control valves from the owfs system. In scanning the archives, I see references to the BAE0910 (which looks quite cleaver) and other references to an AVR based slave device which really interests me as I've also been tinkering with 8-bit AVR's for many years with my model railroad hobby. Most of my more recent AVR work has been Arduino based and so I'd be quite keen to collaborate on building an Arduino based 1-wire slave library that I could use to drive the pumps/valves I need to control and also use to interface a ultrasonic level sensor to sense the water level in my water tanks. I had found a few references to other AVR based 1-wire slaves on the Internet but haven't played with any yet. Anyway I hope that gives you some idea of what my project is. Initially I need to get my head around how to configure owfs to interface the 2 LinkUSB adaptors and get the temperatures stored in a database somewhere on my LAN and display the temperatures on graphs via a web browser. Once I get the measurement system in place I'll move on to controlling it. So it's a reasonably challenging task but hopefully I'll get it functional in the next month or two (hopefully not 3) as winter is rapidly coming to the southern hemisphere... Regards Alex Shepherd Hamilton, New Zealand ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Owfs-developers mailing list Owfs-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/owfs-developers
