User Manual

6
4. BOARD OR PRODUCT LAYOUT
Optical sensor at “A” will detect the missing slot of disc when the disc rotate, further
generate pulses at signal pin.
Header pin at “B” is input supply. User should connect 5V (+) to this pin.
Header pin at “C” is ground of 5V supply, or in other words, the negative terminal of supply.
Header pin at “D” is signal output of sensor board. This pin is internally pull-up to 5V, thus
no extra component is needed for this sensor to be connected to controller.
LED at “E” is an indicator. This LED will light ON if the disc does not block the optical
sensor.
Label Function Label Function
A
Optical Sensor
D
Signal output/pulse output
B
+5 input supply
E
Indicator LED
C
Ground/Negative of supply
B
A
C
D
E