Helpful Links
A few helpful links:
2008-2009 EE Senior Design Webpage
2007-2008 EE Senior Design Webpage
Data Sheets:
Microcontroller: Michochip PIC18F4525
ZigBee Transceiver: ATMel AT86RF231
Temerature Sensor: Microchip TC72
PIR Sensor: Parallax PIR Sensor
Serial-USB UART: FTDI FT232R