Section 4.6 - Infrared Sensors


TV Remote Tech!

This lesson introduces you to the fundamentals of IR (infrared) emitters and receivers, focusing on using IR input to control an LED. Beginning with an overview of IR sensor technology, you'll learn how emitters differ from receivers and see how IR communication mirrors a TV remote’s functionality. In the hands-on portion, you’ll wire an IR receiver to your Arduino, set up a compatible remote, and understand its operation before diving into the code. Using an IR library, you’ll program the receiver to capture signals and display them via the Serial Monitor. Finally, you'll take on a guided exercise to wire three LEDs of different colors and use specific IR remote buttons to control which LED turns on or off, reinforcing your understanding of IR communication in real-world applications.