I’m starting to use xbee modules, and I want to make a project. This project consists of communicating 2 pic one of them will have a sensor and the other an lcd. My question is which way to use api or at, if I use at you can connect a third module as a repeater ?.
With what you have mentioned, I would use transparent all the way around. Simply being that your PIC is doing the conversion so there is no reason to do API.
Yes depending on which version of the Xbee products you choose, you could use a repeater or router.