ROBOT . HEAD to TOE
Product User’s Manual –SN-E18-B03N1
3. PRODUCT SPECIFICATION AND LIMITATIONS
3.1 Theory of Operation
The SN-E18-B03N1 contains infrared sensor for use as reflection of IR signal barriers. It
uses special sensor to detect the modulated IR signal reflected back from a nearby either or
a far distance of the object. The transmitter and the receiver between the light intensity of the
digital infrared sensor can change into for the purpose of current changes in order to achieve
the detection. The output signal of Digital Infrared Sensor is needed to be pull high as it is
NPN output. The module will output a HIGH if no object is detected and a LOW if an object
is detected.
Note: Although the specification stated it is NPN output, we notice the sensor itself is
being pull-up internally. Causing the output pin is being pull up to power pin. So if 12V is
supply, you will get ~12V at output when no obstacle is detected.
3.2 Pin Definitions and Ratings
Color
Name
Function
Brown
VCC
Connects to VCC (+6V to +36V)
Blue
Ground
Connects to Ground
Black
Output
Signal
Connect to an I/O pin of microcontroller which set to INPUT mode
Absolute Maximum Rating
Parameter
Min
Max
Unit
Operating voltage
6
36
V
Sensing meter
0
30
cm
Lab test result show even as low as 5V the sensor can still function. Yet, we do no test for
all sensor.
Created by Cytron Technologies Sdn. Bhd. – All Rights Reserved
5
