The TSOP1838 / VS1838B Infrared (IR) Receiver is a specialized miniaturized sensor designed to receive and decode infrared signals from remote controls. At Electrapac, we recommend this 3-pin module for hobbyists looking to add wireless control to their Arduino, Raspberry Pi, or robotics projects using standard TV or DVD remotes.

Product Overview

The 1838 is more than just a phototransistor; it is a complete IR receiver with an integrated preamplifier and a spectral filter. It is specifically tuned to the 38kHz frequency, which is the standard carrier frequency for almost all household remote controls. This means it is highly resistant to "noise" from ambient sunlight or indoor lighting, ensuring your project only reacts to intentional remote commands.

Key Features for Electrapac Customers

• Internal Filter: The built-in PCM frequency filter ensures that only 38kHz signals are processed, preventing accidental triggers from fluorescent lights or IR security cameras.

• High Sensitivity: Capable of receiving signals from across a large room, even when the remote is not pointed directly at the sensor.

• Digital Output: The sensor provides a clean TTL/CMOS compatible digital signal that can be connected directly to a microcontroller’s digital input pin.

• Epoxy Shielding: The sensor is encased in a black epoxy resin that acts as a physical filter for visible light, further enhancing its reliability in bright rooms.

• Standard 3-Pin Layout: Easy to use with breadboards or for soldering directly onto a PCB for Electrapac custom control units.

Wiring & Integration Guide

Connecting the 1838 IR Receiver to your Electrapac microcontroller is straightforward. Looking at the front of the sensor (the side with the "bulb" or mesh), the pins are typically arranged as follows:

1. OUT (Signal): Connect to a Digital I/O pin.

2. GND (Ground): Connect to the common ground.

3. VCC (Power): Connect to 3.3V or 5V.

Pro-Tip: When using this sensor with an Arduino, we recommend the IRremote library. Use the "IRrecvDump" example to see the hexadecimal codes of your remote buttons in the Serial Monitor. Once you know the codes, you can program your project to perform specific actions (like turning on a relay) when that specific button is pressed.

Primary Applications

• IR Remote Controlled Robots: Steering a DIY rover using an old TV remote.

• Smart Home Automation: Controlling lights, fans, or AC units via infrared commands.

• Wireless Data Transfer: Sending simple status codes between two microcontrollers over short distances.

• Universal Remote Testers: Building a device to check if a remote control is functioning correctly.

• Media Center Control: Adding IR input to a Raspberry Pi running Kodi or a custom PC build.

Why Shop at Electrapac?

We source our 1838 IR Sensors with high-quality internal shielding to ensure maximum range and minimal interference. Visit us at www.electrapac.com for the wireless components that bridge the gap between you and your technology.