TSOP1838
๐ก TSOP1838 IR Receiver Module โ Complete Guide with Infographic
๐ Overview
The TSOP1838 is an infrared (IR) receiver sensor used to detect signals from IR remote controls.
๐ Commonly used in:
๐บ TV remote systems
๐ค Arduino remote-controlled projects
๐ Home automation
๐ฎ IR-based control systems
๐ง 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
๐ Based on Infrared Radiation
๐ Infographic Summary
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โ ๐ก TSOP1838 IR RECEIVER โ
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โ ๐ฏ Detects: IR signals โ
โ ๐ก Frequency: 38 kHz โ
โ โก Voltage: 2.7V โ 5.5V โ
โ ๐ Output: Digital โ
โ ๐ Range: ~5โ8 meters โ
โ ๐ Noise filtering โ
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๐ Pin Configuration
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โ TSOP1838 (Front) โ
โโโโโโโโโโโโโโโโโโโโโโค
โ OUT โ Signal
โ GND โ Ground
โ VCC โ 3.3Vโ5V
โโโโโโโโโโโโโโโโโโโโโโ
๐ Always verify pin order (may vary by orientation)
โ๏ธ Key Specifications
โก Operating Voltage: 2.7V โ 5.5V
๐ก Carrier Frequency: 38 kHz
๐ Output: Digital (LOW when signal detected)
๐ Range: 5โ8 meters
๐ Built-in noise suppression
๐ Key Features
๐ก High sensitivity to IR signals
๐ Noise and ambient light rejection
โก Low power consumption
๐ง Easy interfacing
๐ฆ Compact size
๐งช Applications
๐บ Remote control decoding
๐ค IR-controlled robots
๐ Home automation systems
๐ฎ IR communication
๐ Security systems
๐ Interfacing
Compatible with:
๐ต Arduino
๐ก ESP32 / ESP8266
๐ Raspberry Pi
๐ Connect OUT โ digital input pin
๐ Working Example
๐ Remote Control Project:
Remote sends IR signal ๐ก
TSOP1838 receives signal
Outputs digital pulses
Microcontroller decodes command
โ ๏ธ Important Notes
โ ๏ธ Works only with 38 kHz IR remotes
โ ๏ธ Direct sunlight may affect performance
โ ๏ธ Needs proper decoding library (e.g., IRremote)
โ ๏ธ Output is inverted (LOW when active)
๐ TSOP1838 vs IR Sensor Module
| Feature | TSOP1838 | IR Obstacle Sensor |
|---|---|---|
| Function | Receive IR data | Detect objects |
| Output | Digital signal | Digital/Analog |
| Use | Remote control | Distance sensing |
๐ก Pro Tip
Use IR remote library for easy decoding
Place sensor away from strong sunlight
๐ Perfect for building remote-controlled electronics projects
