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P6
220
Ω
P3
Ω
220
To Servos
15 14
13 12
Vdd
Red
Black
X4
X5
Vdd
Vin
Vss
X3
P15
P14
P13
P12
P11
P10
P9
P8
P7
P6
P5
P4
P3
+
P2
P1
P0
X2
Board of Education
Rev C
© 2000-2003
Chapter 6: Light Sensitive Navigation with Photoresistors · Page 207
0.01 µF
Vss
0.01 µF
Vss
To Servos
(916) 624-8333
www.parallax.com
www.stampsinclass.com
Vdd
Vin
X3
P15
P14
P13
P12
P11
P10
P9
P8
P7
P6
P5
P4
P3
+
P2
P1
P0
X2
HomeWork Board
Figure 6-8
Schematic - Two
Photoresistor RC
Circuits
For measurement
of resistance that
varies with light.
Rev B
Figure 6-9
Wiring
Vss
Diagrams for
Photoresistor
Circuits
Board of
Education
(left) and
HomeWork
Board (right).
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