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“I thought this was interesting. Up till now, ZigBee was only available as a chipset or some rudimentary modules. Now regular schmucks like me that don’t want to mess with a soldering iron can use ZigBee and see if it sucks or not. These radios have a range of almost a mile and cost less than $100. Not bad since nobody else seems to offer anything like this (yet). Now I can get my laptop to communicate with some of my robotics projects without an RS-232 umbilical cord.” (WikiPedia’s page on ZigBee a is a good way to figure out whether this is interesting to you; in short, a low-power, medium-range radio spec for all sorts of interesting uses.) Link.
I have bought several similar units from Aerocomm (www.aerocomm.com) and I have to say that their service department is extraordinarily gracious. I actually purchased the units from Mouser, and Aerocomm called me after to see how well it went. Their 900 MHz RS-232 serial radios are $110 retail, with a client/server pair going for $220, including antennas, power supplies, serial interface cable, instruction manual, and configuration software. (Aerocomm also makes them in 2.4 GHz, and in RS-485 and Ethernet versions, as well as modules and PCI boards)I am using them to set up an emissions monitoring network around a hazardous waste site undergoing remediation (11 different remote clients and one server). Previous products I have used (Rae Systems) were prepackaged with proprietary software for collecting and displaying the data, and each piece cost $2500. Feel free to contact me (vince.daliessio@gmail.com) if you have any questions (or answers!) for me.