I like the ZigBee module from Microchip that I wrote about below. But theory and practice aren't always the same, so I've ordered two of the modules to try out.
In my spare time, I sometimes build little robots and I've wanted to try out wireless for some time now. I don't have enough time to dig into the low level stuff and figure out how to do it from scratch so these modules seem like they might just be the ticket.
I'm going to see if I can integrate some ZigBee into my robots with these modules and I'll keep you posted on the progress. The modules are backordered at Microchip until November 14th, but that will give me some time to dig out some of the old bot boards and get ready. I'll prototype up the software with my old boards and at the same time, I'll get PCB123, from Sunstone Circuits, out and do a re-design to use more surface mount and shrink the boards.
Check back here periodically to see my progress and if all goes well, I'll have the actual bots in our booth at Embedded Systems Conference, Silicon Valley in April 2009.
Wireless minds want to know