Hi!





I'm building a PIC-based circuit that must communicate data with other PIC circuits talking the same binary language...



My current design iteration is using an I2C bus, and I'm very impressed with the result... but the final product is to
operate wirelessly with a range of at least 50-100 feet for operation in a home or small business...



What are the possible choices for wireless data communication and which one do you suggest?  I'm considering RF (AM &
FM), BlueTooth, 802.11b, whatever does the trick...



But most importantly (being a small shop), I don't have the resources / time / expertise to design a complex wireless
transceiver and am examining all possible solutions before picking one.



My goals are:

-    Cheapest possible electronics (hopefully under $20 / circuit)

-    Small physical footprint to fit in a small casing.  (hopefully under 4 square inches)

-    Reasonably secure against cracking.  (I'll implement suitable encryption in my PIC firmware)

-    Can be easily approved by the FCC and other RF monitoring bodies.  (Any of the above choice wouldn't need FCC
approval?)

-    Technology that has a future!  It'd be nice to later write a driver for a Bluetooth-equipped laptop or 802.11b
PocketPC to control my boxes.



Any good web sites / resources you could recommend to get me started?



Many thanks for any hints you may offer!



    Jean-Pierre


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