Infrared Transmitter with Arduino
Create an Arduino IR Remote
Written By: Madeleine Schappi
Difficulty
Easy
Steps
6
Introduction
Today, we're going to learn about the Infrared Transmitter.
In this guide, we will program an Arduino and use it with an IR transmitter to play a prank! We will get it to turn a TV off.
After completing this guide, you will gain familiarity with the IR transmitter and can go on to use it in further projects!
Step 1 Insert your IR Transmitter into the Breadboard
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Insert your Infrared Transmitter into your breadboard so that the cathode (short leg) is on the left-hand side and the anode (long leg) is on the right-hand side.
Step 2 Insert Your 220 Resistor into the Breadboard
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Insert your 220 Ohm resistor so that one of it's legs vertically in line with the LED's anode (long leg).
Step 3 Connect Arduino GND to the Cathode
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Run a jumper wire from an Arduino Ground Pin (GND) to the IR Transmitter cathode.
Step 4 Connect Arduino Pin 3 to the Resistor
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Run another jumper wire from pin 3 so that it's vertically in line with the resistor's other leg.
Step 5 Install the IRremote Library
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Install the IRremote Library.
Step 6 Upload the code
#includeIRsend irsend; void setup() { } void loop() { for (int i = 0; i < 3; i++) { irsend.sendSony(0xa90, 12); //irsend.sendSAMSUNG(0xE0E040BF, 32); //irsend.sendNEC(0xF4BA2988, 32); //irsend.sendPanasonic(0x4004, 0x100BCBD); //irsend.sendLG(0x880094D, 28); delay(40); } delay(5000); //5 second delay between each signal burst }
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This code will by default send a command to turn on and off a Sony television. Uncomment out your brand of Television to make the code work for your TV.
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Upload the code to your Arduino and bring your Arduino close to your TV (you might want to use the battery connector).