elizarov wrote:I don't mind using multiple standards. My conundrum now, is to pick an easy-to-use RF module for my own projects, as a replacement for XBee Series 2.5 ZDNet. These modules I'm planning to use with my own code with my own arduino-based hardware. I don't really care what RF standard my utility company or my remote-controlled lamp is going to use. I'll bridge to them, not a bid deal. Moreover, I'm not really in the green camp. I'm solving my real-life home-automation problems. I'm looking to make my life more convenient, not necessarily cheaper or greener. I just want to be sure that the modules I pick now will be available and supported for 3+ years, because I'll have to support and maintain my own projects, and it's better done if they run on a supported products.
stevech wrote:I'd use XBee series 1 with 802.15.4 and do your own static mesh, if you will. In home automation, the nodes don't move.
stevech wrote:Or a proprietary module such as those from Nordic Semiconductor or Hope RF. The latter may be a good choice.
elizarov wrote:Thanks for insights into 802.15.14. I don't really need a mesh, but I don't want to imbue my nodes with an a priori knowledge of other nodes' MAC addresses. I have multiple data-gathering and device-control nodes, and multiple gateways to the outside world (couple of ethernet gateways are operational and working on SMS gateway). Of course, I can just broadcast everything (and that is what I do most of the time), but I also need point-to-point for over-the-air firmware updates. And its cumbersome to keep a track of MAC addresses for firmware updates. Mnemonic names are much easier to remember, and that is why I'd like to have some routing infrastructure that can, at least, find a node by its mnemonic name and then establish point-to-point connection.
stevech wrote:Over the air firmware upgrades to your micro are easy if you use an appropriate protocol, and one which either does not use, or virtualizes the means to reset the target microprocessor.
SFE-TS-Michelle wrote:The new XBee ZB modules have the same hardware as the Series 2.5 just different firmware. Basically this means that you can buy the new module and install the Series 2.5 firmware and they should fit into your existing network just fine (or you can upgrade them all).
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