Modern Device Forum

Yes... ZigBee is to IEEE 802.15.4 what TCP/IP is to IEEE 802.3 - one of many network layer protocols. ZigBee is not a synonym for IEEE 802.15.4 XBee is a product name (Digi International) for one of/the most popular plug and play IEEE 802.15.4 module, with a different product in the XBee family supp...

FYI
There's also another RFM12 library out there - RFM12B in plain C, not C++ as Arduino uses. So it'll work with Atmel's free AVR Studio 4. And download with AVRdude to the on-chip Arduino bootloader.
http://www.das-labor.org/wiki/RFM12_library/en

Nicely done documentation too, using doxygen

ZigBee? For a simple point to point link? Or do you actually mean an XBee radio in 802.15.4 mode without ZigBee? -- Yes, I too got the 915MHz mode running with Arduino 1.0. There's also another library out there - RFM12B in plain C, not C++ as Arduino uses. So it'll work with Atmel's free AVR Studio...

No biggie to me- they're dirt cheap and are typically found in a hobbyist's kit.

Mine came with right-angle.
No biggie, you can use either straight or angled, depending on how you solder them to the board.

I should clarify earlier post

outside, receiving node: error rate too high at about 300-400 ft.

meaning the error rate, with the high data rate, is GOOD for the first few hundred ft. Range would improve with better antennas, lower data rate, narrower channel, etc.

HopeRF RFM12B. Uses SiLabs chipset. Range will vary by Band: 433 is best; 868/900 about 30% less (laws of physics) Antenna type your chosen data rate and channel bandwidth - halve the channel bandwith (and data rate), great increase in range due to ability to demodulate weaker signals your chosen se...

Work in process... AVR microprocessor, HopeRF RFM12B radios (433, 868/902-929MHz), 2mW. C/C++ code, initially Arduino, uses only Arduino base libraries. So far, the code can send/receive structured packets with a header. In the header is the packet length (variable), node IDs, and flags for "AC...