I have a monitoring station that I would like to link into my LAN via wifi. The data being transmitted is relatively small, maybe 1 kB per week or so and the communication is two way, a monitoring center or control center might send info back to the microcontroller that changes its functions, etc. Any suggestions on a low-cost, low-power wifi module? I'd do something other than wifi except I need reliable two way data flow and easy integration into the network. That being said, if you can think of anything that would work in place of wifi, I'd be open to suggestions.
The RN-171 low power WiFi module is very simple to use. It uses high level ASCII commands such as "set wlan SSID name" so that in as few as 4 commands your module gets connected to an AP. Withe the RN-171-EK you can get started within a day.
A good example of the possibilities of this module, even in standalone mode is shown here .
You can chose between TCP, UDP or html client mode to exchnage data.