Application  Proximity Sensor  Object Near detection  Tachometer (Measure Fan Speed)  Obstacle Detector Sensor  Line/Wall Follower Sensor  Object counter over conveyer belt

1. STARLIT ELECTRONICS
PROXIMITY
IR SENSOR
Proximity IR Sensor Module
This Proximity IR Sensor give Digital output and can be used in multiple areas for designing electronics
projects.

2. Introduction
Proximity IR Sensor is used to detect objects and obstacles in front of sensor. Sensor
keeps transmitting infrared light and when any object comes near, it is detected by the
sensor by monitoring the reflected light from the object. It can be used in robots for
obstacle avoidance & line follower robot, for automatic doors, for parking aid devices or
for security alarm systems, or contact less tachometer by measuring RPM of rotation
objects like fan blades.
Features
 IR transmitter LEDs
 3 pin easy interface connector
 Indicator LED
 Up to 20cm range for white object
 Can differentiate between black and white colors
 Active High on object detection
Application
 Proximity Sensor
 Object Near detection
 Tachometer (Measure Fan Speed)
 Obstacle Detector Sensor
 Line/Wall Follower Sensor
 Object counter over conveyer belt
Specifications
 Power Supply : 5V DC Power Consumption: 50mA max
 Detection range 20 cm
 Operation range varies according to color of the object, light color has more range.
 Detection Indicator LED
 Digital output. Active with logic “1”
 Dimensions : 41x27 mm

3. How to Use
To use sensor you only need power the sensor by connect two wires +5V and GND to
Pin’1’ & Pin’2’ respectively. Leave middle output pin for interfacing with any controller.
When LED is off the output is Low.
Bring any object nearby the Sensor and the LED will lit up and output becomes High.
The output is active High and can be given directly to microcontroller or using current
limiting 1K resistor in series for interfacing applications.
When their is "NO BOJECT" or "DARK OBJECT" present, than Transmitted IR will not
reflect back to RX(Photo Diode) and Vout (Output) wil be LOW.
When "LIGHT -COLOR OBJECT" is present, than Transmitted IR will reflect back
andVout (Output) will be HIGH.

4. Interfacing
Proximity IR Sensor Module & Microcontroller, through which it is interface, should
have common GND & VCC +5V. Current limiting resistor of 220ohm to 1K can be used
to connect Vout pin of Proximity IR Sensor Module with any digital I/O pin of
controller.
NOTE: Please ensure polarity of power supply before connecting to module.