A Wireless XBee Pan/Tilt Servo System For Cameras. It uses a pair of XBee modules to build a simple wireless interface which will be used with PIC 18LF4520′s to control a servo based pan and tilt system which can move my camera 45 degrees in any direction, left-right-forward-backwards.
Wireless XBee Pan/Tilt System - [Link]
Chris from PyroElectro has posted this tutorial on interfacing with XBee.
Getting started with XBee can be tricky, even though it shouldn’t be. Here is a drop-dead simple guide to using XBee modules out of the box. The tutorial shows you how to build a wireless interface with XBee modules between two PIC 18LF4520 microcontrollers.
XBee wireless interface tutorial - [Link]
PICtris project is a tetris game using dot led displays controlled by a PIC microcontroller. PIC18LF4520 is drawing 2D graphics on LED display and four buttons control and rotate the blocks. Find schematics and source code on the link below.
PICtris: Tetris on a PIC MCU - [Link]