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Parts:
#1: http://www.rohm.com/index.html
Sensors:
#1: PIR Sensor
Circuits:
#1: http://www.pyroelectro.com/projects/vga_test_box/conclusion.html
#2: http://www.pyroelectro.com/tutorials/l298_stepper/software.html
#3: http://robots.freehostia.com/Circuits/CircuitsMain.html
Stepper Motor:
#1: http://www.pyroelectro.com/tutorials/stepper_motor/index.html
#2: http://home.cogeco.ca/~rpaisley4/Stepper.html
#3: http://www.cs.uiowa.edu/~jones/step/
Package Reference:
http://www.standardics.nxp.com/packaging/handbook/pdf/pkgchapter1.pdf
http://sma-www.cfa.harvard.edu/private/file_view/parts_lib/index2.html
http://scv.bu.edu/GC/shammi/ir/
Project for controlling a PC with a remote control