TSOP1838 IR Infrared Remote Control Receiver

TSOP1838 IR receiver module – an infrared receiver for remote control signals.

TSOP1838 IR Receiver Module Complete Guide with Infographic

Overview

The TSOP1838 is an infrared (IR) receiver sensor used to detect signals from IR remote controls.

Commonly used in:

• TV remote systems

• Arduino remote-controlled projects

• Home automation

• IR-based control systems

Working Principle

• Receives infrared light signals from a remote

• Tuned to 38 kHz frequency (standard IR remotes)

• Filters noise and ambient light

• Outputs a clean digital signal

Based on Infrared Radiation

Infographic Summary

< Detects: IR signals Frequency: 38 kHz Voltage: 2.7V 5.5V Output: Digital Range: ~58 meters Noise filtering

Pin Configuration

TSOP1838 (Front) OUT Signal GND Ground VCC 3.3V5V

Always verify pin order (may vary by orientation)

Key Specifications

• Operating Voltage: 2.7V 5.5V

• Carrier Frequency: 38 kHz

• Output: Digital (LOW when signal detected)

• Range: 58 meters

• Built-in noise suppression

Key Features

• High sensitivity to IR signals

• Noise and ambient light rejection

• Low power consumption

• Easy interfacing

• Compact size

Applications

• Remote control decoding

• IR-controlled robots

• Home automation systems

• IR communication

• Security systems

Interfacing

Compatible with:

• Arduino

• ESP32 / ESP8266

• Raspberry Pi

Connect OUT digital input pin

Working

Microcontroller decodes command

Important Notes

• Works only with 38 kHz IR remotes

• Direct sunlight may affect performance

• Needs proper decoding library (e.g., IRremote)

• Output is inverted (LOW when active)

TSOP1838 vs IR Sensor Module

Pro Tip

• Use IR remote library for easy decoding

• Place sensor away from strong sunlight