ESP32 KY-005 Infrared Transmitter Module

🛠️ KY-005 Infrared Transmitter Module Troubleshooting

This guide outlines a systematic approach to troubleshoot and resolve common problems with the . Start by confirming that the hardware connections are correct, as wiring mistakes are the most frequent cause of issues. If you are sure the connections are correct, follow the below steps to debug common issues.

❌ Infrared Signal Not Emitted

🔥 Overheating or Damage to the Module

💻 Code Examples

Below you can find code examples of KY-005 Infrared Transmitter Module with ESP32 in several frameworks:

• Arduino IDE
• ESP-IDF
• ESPHome
• PlatformIO
• MicroPython

If you encounter issues while using the KY-005 Infrared Transmitter Module, check the Common Issues Troubleshooting Guide.

ESP32 KY-005 Arduino IDE Code Example

Example in Arduino IDE

Fill in your main Arduino IDE sketch file with the following code to use the KY-005 Infrared Transmitter Module:

#include <IRremote.h>

IRsend irsend;

void setup() {
    Serial.begin(9600);
    Serial.println("KY-005 Infrared Transmitter Test");
}

void loop() {
    for (int i = 0; i < 3; i++) {
        irsend.sendNEC(0xA90, 32); // Send NEC protocol with command 0xA90
        delay(40);
    }
    delay(5000); // Wait 5 seconds before sending the signal again
}

This Arduino code utilizes the IRremote library to send an NEC protocol infrared signal with the command 0xA90. The signal is sent three times with a 40ms delay between transmissions, followed by a 5-second pause before repeating. This setup is commonly used to control devices like TVs or other appliances that accept infrared commands.

Connect your ESP32 to your computer via a USB cable, Ensure the correct Board and Port are selected under Tools, Click the "Upload" button in the Arduino IDE to compile and upload the code to your ESP32.

ESP32 KY-005 ESP-IDF Code Example

Example in Espressif IoT Framework (ESP-IDF)

This ESP-IDF code sets up the KY-005 Infrared Transmitter using the RMT (Remote Control) peripheral of the ESP32. It configures GPIO17 as the output pin and initializes the RMT driver to transmit an infrared signal. The IR protocol can be customized to match the target device's requirements.

ESP32 KY-005 ESPHome Code Example

Example in ESPHome (Home Assistant)

Fill in this configuration in your ESPHome YAML configuration file (example.yml) to integrate the KY-005 Infrared Transmitter Module

remote_transmitter:
  - platform: gpio
    pin: GPIO17
    carrier_duty_percent: 50%

button:
  - platform: template
    name: "KY-005 Send IR Signal"
    on_press:
      - remote_transmitter.transmit_nec:
          address: 0x00FF
          command: 0xA90

This ESPHome configuration sets up the KY-005 Infrared Transmitter on GPIO17. It uses the NEC protocol to send an infrared command when a button is pressed, making it ideal for controlling TVs or other IR-enabled devices.

Upload this code to your ESP32 using the ESPHome dashboard or the esphome run command.

ESP32 KY-005 PlatformIO Code Example

Example in PlatformIO Framework

For PlatformIO, make sure to configure the platformio.ini file with the appropriate environment and libraries, and then proceed with the code.

Configure platformio.ini

First, your platformio.ini should look like below. You might need to include some libraries as shown. Make sure to change the board to your ESP32:

[env:esp32]
platform = espressif32
board = esp32dev
framework = arduino
lib_deps =
    z3t0/IRremote

ESP32 KY-005 PlatformIO Example Code

Write this code in your PlatformIO project under the src/main.cpp file to use the KY-005 Infrared Transmitter Module:

#include <Arduino.h>
#include <IRremote.h>

IRsend irsend;

void setup() {
    Serial.begin(115200);
    Serial.println("KY-005 Infrared Transmitter Test");
}

void loop() {
    Serial.println("Sending IR signal");
    irsend.sendNEC(0x00FF, 32);
    delay(5000);
}

This PlatformIO code initializes the KY-005 Infrared Transmitter using the IRremote library. It sends an NEC protocol signal every 5 seconds, making it suitable for testing IR communication.

Upload the code to your ESP32 using the PlatformIO "Upload" button in your IDE or the pio run --target upload command.

ESP32 KY-005 MicroPython Code Example

Example in Micro Python Framework

Fill in this script in your MicroPython main.py file (main.py) to integrate the KY-005 Infrared Transmitter Module with your ESP32.

import machine
import time

IR_TX_PIN = machine.Pin(17, machine.Pin.OUT)

def send_pulse():
    for _ in range(32):
        IR_TX_PIN.value(1)
        time.sleep_us(562)
        IR_TX_PIN.value(0)
        time.sleep_us(562)

while True:
    print("Sending IR signal")
    send_pulse()
    time.sleep(5)

This MicroPython script configures the KY-005 Infrared Transmitter on GPIO17. It simulates an NEC-like IR signal by toggling the pin on and off rapidly, mimicking the transmission of an infrared command.

Upload this code to your ESP32 using a MicroPython-compatible IDE, such as Thonny, uPyCraft, or tools like ampy.