Robomart IR Based Digital Color Sensor(Black/white)

This Is An Ir Based Digital Proximity Sensor. These Sensors Can Be Used As An Obstacle Sensor, Edge Sensor, Color Sensor (Black / White), Light Sensor, Line Sensor, Etc. It Comes With Inbuilt Dual Operational Amplifier Ic That Converts The Analog Voltage Signal Into Digital Signal Making It Perfectly Suitable For Micro Controller / Processor Interfacing.Operational Amplifier : An Operational Amplifier (Op - Amp) Is A Dc - Coupled High - Gain Electronic Voltage Amplifier With A Differential Input And, Usually, A Single - Ended Output. In This Device It Has Been Used As A Comparator. The Use Of Comparator Makes The Device As A Digital Device Since It Converts The Incoming Signal From The Photo Diode Into Digital One. Or We Can Simply Say The Incoming Signals Are Amplified To Vcc.Ir Led : An Ir Led, Also Known As Ir Transmitter, Is A Special Purpose Led That Transmits Infrared Rays In The Range Of 760 Nm Wavelength. Such Leds Are Usually Made Of Gallium Arsenide Or Aluminum Gallium Arsenide. They, Along With Ir Receivers, Are Commonly Used As Sensors.Photo Diode / Ir Receiver : A Photodiode Is A Type Of Photo Detector Capable Of Converting Light Into Either Current Or Voltage, Depending Upon The Mode Of Operation. The Photo Diode Is Used As An Ir Receiver In This Device As It Is Used To Receive The Reflected Incoming Ir Rays.Potentiometer : A Potentiometer, Informally A Pot, Is A Three - Terminal Resistor With A Sliding Contact That Forms An Adjustable Voltage Divider. If Only Two Terminals Are Used, One End And The Wiper, It Acts As A Variable Resistor Or Rheostat. Here, The Potentiometer Is Used To Set A Reference Voltage For The Comparator To Compare The Incoming Potential From The Photodiode.