IR Receiver Module (KY-022)

IR Receiver Module (KY-022) Overview

The IR Receiver Module (KY-022) is a compact, high-sensitivity infrared receiver designed for remote control and IR communication applications. With an integrated demodulation circuit and a simple 3-pin interface, the KY-022 converts modulated infrared signals into digital pulses ready for decoding by microcontrollers and single-board computers.

Key Features of the KY-022 IR Receiver Module

• High-sensitivity IR sensor for reliable reception from remote controls.
• Wide receiving angle for flexible mounting and operation.
• Integrated demodulation circuit (typically 38kHz) to output decoded digital pulses.
• Standard 3-pin connections: VCC, GND, OUT for easy wiring.
• Operates from 3.3V to 5V, compatible with most microcontrollers.
• Compact and power-efficient—suitable for battery-powered devices.

Technical Specifications

• Module Type: IR Receiver Module
• Model Number: KY-022
• Operating Voltage: 3.3V to 5V
• Frequency: Typically 38kHz (compatible with most consumer remotes)
• Output Type: Digital pulse output (TTL/CMOS compatible)
• Receiving Distance: Up to 18 meters (varies with remote output and environment)
• Connections: VCC, GND, OUT

Pinout and Wiring

• VCC: Connect to 3.3V or 5V supply (check your board logic level).
• GND: Common ground with your microcontroller or SBC.
• OUT: Digital signal output. Connect to a digital input pin to read demodulated pulse codes.

Recommended best practice: place a 0.1uF decoupling capacitor close to VCC and GND to reduce supply noise. The OUT pin provides demodulated pulse sequences compatible with IR decoding libraries.

Compatibility and Integration

• Works with Arduino, Raspberry Pi, ESP32, STM32 and other platforms that can read digital input pulses.
• Common libraries: Arduino “IRremote” library, LIRC on Linux-based SBCs, and other IR protocol decoders.
• Typical use: connect VCC and GND, then attach OUT to a digital input and use an IR decoding library to interpret NEC, RC5, Sony and other protocols.

Applications

• Remote control systems for consumer electronics and prototypes
• Home automation and smart device control
• IR communication projects and signal detection
• Robotics for remote commands and sensor triggers
• DIY electronics and hobbyist projects

Integration Tips and Best Practices

• Mount the module with a clear line of sight to the remote for best range and reliability.
• Avoid direct sunlight or strong IR sources that can reduce sensitivity or cause false triggers.
• Add a small decoupling capacitor (0.1uF) between VCC and GND near the module to improve stability.
• Use proven IR libraries to decode pulses and handle protocol timing—this avoids manual timing errors.
• Test reception distance and angle in your final enclosure to verify performance under real conditions.

Ordering and Notes

Images are for illustration only and the actual product appearance may vary. Check module dimensions and pin spacing if precise mechanical fit is required. The KY-022 is an economical, reliable option for adding remote control functionality and IR reception to your projects.

The KY-022 IR Receiver Module combines high sensitivity, onboard demodulation, and simple wiring to make IR signal detection straightforward for makers, engineers, and hobbyists.