LED
LCD
Product Description
The HX1838 (often featuring the high-performance VS1838B sensor) is a miniaturized infrared (IR) receiver module designed for wireless remote control applications. This module consists of a high-speed, high-sensitivity PIN photodiode and a specialized preamplifier IC integrated onto a single compact PCB. It is designed to receive and filter modulated IR signals at the industry-standard carrier frequency of 38 kHz, making it highly immune to ambient light interference from household lamps and sunlight.
Mounted on a tiny breakout board, this module includes an onboard status indicator LED that flashes briefly when an IR signal is detected, making debugging your remote codes incredibly straightforward. With its simple 3-pin interface, it connects directly to any microcontroller digital input pin, allowing you to easily add wireless remote control capabilities to your DIY home automation projects, smart appliances, or robotics.
⚠️ Receiver Placement Note: For optimal range and reliable signal decoding, ensure the metal-shielded dome of the sensor is pointing towards your IR remote’s line of sight. Avoid placing the receiver directly behind thick, non-IR-transparent plastics or near high-frequency fluorescent lighting, which can occasionally desensitize the sensor.
Pinout / Layout Connections
The module breaks out a straightforward 3-pin interface:
OUT (Signal): Digital output pin. Connect to any digital input pin on your microcontroller (e.g., Pin 11 on an Arduino Uno).
GND: Connect to your system’s common ground (0V).
VCC: Power supply input. Connect to 3.3V or 5V DC.
Applications
IR Remote Control Systems: Controlling home appliances, smart lights, and relays wirelessly using standard TV or DVD remotes.
Robotics Navigation: Designing simple obstacle detection grids or beacon-following systems for mobile robots.
Interactive Media Displays: Utilizing a handheld IR remote to change slides, adjust volume, or toggle modes on computer-driven kiosks.
Technical Specifications
| Parameter | Value / Specification |
| Carrier Frequency | 38 kHz (Standard for most consumer remotes) |
| Operating Voltage | 2.7V to 5.5V DC (3.3V and 5V compatible) |
| Current Consumption | 0.35mA typical (highly energy efficient) |
| Receiving Distance | Up to 15 meters (depending on transmitter power and alignment) |
| Reception Angle | +/- 45 Degrees |
| Output Logic | Active Low (outputs 0V when 38 kHz carrier is detected, VCC when idle) |
| Onboard Features | Red power/signal status LED |
| Dimensions | 20mm x 15mm |
