Definitive Guide to IR

This is the code for this YouTube video: https://youtu.be/gADIb1Xw8PE

📥 Installation

1. Download this repository (Code → Download ZIP)
2. Extract the ZIP file
3. Copy the ESP32-IRremote folder to your Arduino libraries folder:
   • 🪟 Windows: Documents\Arduino\libraries\
   • 🍎 macOS: ~/Documents/Arduino/libraries/
   • 🐧 Linux: ~/Arduino/libraries/
4. Restart the Arduino IDE
5. Open the example sketch from File → Examples → IRremote

⚠️ Important: You need to copy the ESP32-IRremote folder itself, not the entire repository folder.

🔧 Platform Compatibility

Platform	Status	Library to Use
ESP32	✅ Supported	ESP32-IRremote (this repo)
ESP8266	⚠️ Use alternative	IRremoteESP8266

❌ Do NOT use IRremoteESP8266 on ESP32 with this project! It may cause crashes when sending IR signals. Use the ESP32-IRremote library from this repository instead.

📡 IRMQTT_ESP32

The IRMQTT_ESP32 folder contains an MQTT-enabled IR transceiver sketch that allows you to:

• Receive IR codes and publish them to an MQTT broker
• Send IR codes by subscribing to MQTT commands

Wiring

Function	GPIO Pin
IR Receiver	GPIO 14
IR Sender	GPIO 5
Status LED	GPIO 2

MQTT Topics

Topic	Direction	Description
IR/key	Publish	Received IR codes are published here
IR/command	Subscribe	Send IR codes by publishing here
IR/service	Publish	Status messages

JSON Message Format

{"type":"3", "value":"1303526340", "length":"32"}

Field	Description
type	IR protocol (1=RC5, 2=RC6, 3=NEC, 4=Sony, 5=Panasonic, 6=JVC)
value	The IR code value
length	Bit length of the code

Supported Protocols

NEC, Sony, Panasonic, JVC, RC5, RC6

⚙️ Configuration

Please comment out the credentials.h include if you have no such file in your library folder.

The credentials.h file contains your WiFi credentials:

#define CREDENTIALS 1
// WLAN
#define mySSID "your-wifi-name"
#define myPASSWORD "your-wifi-password"

Set your MQTT broker IP in the sketch:

IPAddress server(192, 168, 0, 203);