🔶 KY-022 / TSOP1838 Infrared Receiver Module — IR Remote Detector for Arduino / ESP32 / ESP8266

📦 Overview

Compact IR receiver module based on the TSOP1838 demodulating IR sensor. Receives infrared remote signals (≈38 kHz) and outputs clean digital pulses suitable for decoding by microcontrollers. Ideal for remote control decoding, WLED / lighting triggers, home automation inputs and general IR-based control with Arduino, ESP8266, ESP32 or Raspberry Pi.

✅ Key Benefits

• TSOP1838 demodulating receiver for robust remote decoding
• Simple 3-pin wiring (VCC / GND / OUT)
• Works across 3.3V–5V modules (use 3.3V signal on ESP boards)
• Use with Arduino / IRremote libraries or ESPHome remote_receiver
• Perfect for remote control projects, automation triggers and testing

🔌 Quick Wiring

KY-022 Pin   -> Microcontroller
-----------------------------
VCC          -> 3.3V or 5V (module dependent)
GND          -> GND
OUT          -> Digital input (e.g. GPIO4 on ESP32, D2 on Arduino UNO)

For ESP32/ESP8266 use 3.3V signalling. Point the IR receiver at the remote, avoid direct sunlight/strong IR sources while learning codes.

🧩 ESPHome — IR Receiver (Discovery + Action)

esphome:
  name: ir_receiver
  platform: ESP32
  board: esp32dev

wifi:
  ssid: "YOUR_SSID"
  password: "YOUR_PASS"

logger:
  level: DEBUG

api:
ota:

remote_receiver:
  pin:
    number: GPIO4        # <- change to your KY-022 OUT pin
    inverted: false
  dump: all              # prints received codes/protocol (use for discovery)

switch:
  - platform: gpio
    pin: GPIO5           # relay / device to control
    id: relay_output
    name: "IR Controlled Relay"
    restore_mode: RESTORE_DEFAULT_OFF

# Example: trigger action for NEC protocol (replace address/command after discovery)
remote_receiver:
  pin:
    number: GPIO4
  on_nec:
    - address: 0x00FF00   # replace with discovered address
      command: 0xA25D     # replace with discovered command
      then:
        - switch.toggle: relay_output
        - logger.log: "NEC code received — relay toggled"
  

🧩 Arduino — IR Receiver (Discovery + Action)

// Arduino UNO — KY-022 using IRremote library
// Connect KY-022 OUT -> D2 (INT0). Install "IRremote" via Library Manager.

#include <IRremote.h>

const int RECV_PIN = 2;      // KY-022 OUT
IRrecv irrecv(RECV_PIN);
decode_results results;

const int RELAY_PIN = 8;     // relay output pin

void setup() {
  Serial.begin(115200);
  irrecv.enableIRIn();
  pinMode(RELAY_PIN, OUTPUT);
  digitalWrite(RELAY_PIN, LOW);
  Serial.println("IR receiver ready. Press remote buttons to discover codes.");
}

void loop() {
  if (irrecv.decode(&results)) {
    Serial.print("Raw value: 0x");
    Serial.println(results.value, HEX);
    // Example: match a discovered code (replace 0xA25D with your discovered value)
    if (results.value == 0xA25D) {
      digitalWrite(RELAY_PIN, !digitalRead(RELAY_PIN)); // toggle relay
      Serial.println("Matched code - toggled relay");
    }
    irrecv.resume(); // receive next value
  }
}
  

💡 Possible Uses

• IR remote input for smart lights, WLED, and LED strips
• Remote-control receiver for TV/AV emulation projects
• Trigger relays, scenes or automations in Home Assistant via ESPHome
• Hands-free remote controls for robots and DIY devices
• Learning IR protocols and embedded input handling

📦 Package & Notes

• 1 × KY-022 / TSOP1838 Infrared Receiver Module
• Example ESPHome YAML and Arduino sketch included in description

Tip: Use the ESPHome dump: all feature or the Arduino serial monitor to capture remote codes. Replace the example hex values in the code above with your discovered values to trigger actions.

KY-022 TSOP1838 Infrared Receiver Module — IR Remote Detector for Arduino ESP32 ESP8266

✨ Fast Shipping • 🔒 Secure Checkout