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OSEPP IR Line Sensor Module
The OSEPP IR Line Sensor Module differentiates the reflections between dark and light surfaces. It utilizes the Fairchild QRE1113GR miniature reflective object sensor and the NXP PCA9691 A/D converter. The 8-bit A/D converter digitalizes the sensor output. The sensor operates by emitting an IR signal via an LED, and then measuring the amount of reflection to determine the blackness of the surface.
The module uses the I²C interface for data communication. The I²C lines are packaged with the power and ground lines into a modular connector, which allows easy plug and play operation. There are two connectors on the module to enable daisy chaining of multiple I²C devices together.
This sensor module is ideal for designs that required to track black line on a white surface (or vice versa), such as in a line-following robot, or used to detect the outer perimeters of a competition ring.

I²C Addresses (7-bit)
0×48, 0×49, 0x4A, 0x4B
Form Factor
23 mm x 36 mm
Power Consumption
400 mW
Connector Pin Definition
Pin 1: Power
Pin 2: I²C Data
Pin 3: Ground
Pin 4: I²C Clock

Plug and play with OSEPP I²C Expansion Shield
Two IR sensors per board with independent outputs
Flexible blackness threshold that can be set via software setting
8-bit ADC for digitizing sensor output, sample rate up to I²C frequency
Support I²C interfacing with 4 programmable 7-bit address: 0×48, 0×49, 0x4A, 0x4B
Provides pass-through connector to support daisy chaining of multiple sensors from the OSEPP Sensor Module family
Provides 0.1 breakout points for power and I²C interface pins access
Stock Code
Product Name
OSEPP IR Line Sensor Module

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