TSOP1838

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