ID      desc

R1      470ohm resistor
R2      5kohm linear potentiometer
R3      100kohm resistor
R4      120kohm resistor
R5,R6   10kohm resistor
S2      tactile switch ("pushbutton")
LDR1    A fast LDR with range around 500ohm...5Mohm, e.g. VT935G
LED1    green led
DIS1    HD44780 compliant character display
IC1     ATMEGA88PA
C1      10uF electrolytic capacitor
C2,C3   22pF ceramic capacitor
Q1      16MHz crystal

other:
VGA extension cable
AVR programmer
5v DC power supply (regulated)