Project Overview

This project is an open-source Smart Home Infrared Receiver & Learning Module built around the Sony SBX-1610-52 IR receiver module.

The primary goal is to provide a reliable, low-cost solution for capturing, decoding, and processing infrared signals from standard remote controls (such as TV, AC, or audio equipment remotes). By interfacing the SBX-1610-52 with an ESP32 microcontroller, this board bridges legacy infrared-controlled appliances with modern smart home ecosystems like Home Assistant via MQTT.

Key Features

• High-Sensitivity IR Reception: Utilizes the Sony SBX-1610-52 module for optical filtering and noise suppression.
• Smart Home Integration: Communicates with home automation platforms over Wi-Fi / MQTT via ESP32.
• Protocol Support: Supports standard protocols including NEC, RC-5, RC-6, and Sony SIRC.
• Low Component Count: Simple peripheral circuit with power filtering to prevent false triggers.

Hardware & Circuit Design

1. The board circuit is minimal yet robust:
2. Power Supply Filtering: An RC filter (100Ω resistor and 47µF capacitor) stabilizes the Vcc supply to the SBX-1610-52 module to reduce high-frequency power noise.
3. Signal Line: The output pin (OUT) of the SBX-1610-52 connects directly to a GPIO pin on the ESP32 (e.g., GPIO 15) with an internal/external pull-up resistor.
4. Status Indicator: An onboard LED connected to a dedicated GPIO provides visual feedback whenever an IR signal is actively received.

Software & Firmware

The firmware can be easily compiled using the Arduino IDE or PlatformIO using the IRremoteESP8266 library.

Basic Arduino Code Snippet:

C++

#include <Arduino.h>

#include <IRrecv.h>

#include <IRutils.h>

const uint16_t RECV_PIN = 15; // Connected to OUT of SBX-1610-52

IRrecv irrecv(RECV_PIN);

decode_results results;

void setup() {

 Serial.begin(115200);

 irrecv.enableIRIn(); // Start the receiver

 Serial.println("IR Receiver Initialized.");

}

void loop() {

 if (irrecv.decode(&results)) {

  // Print received IR code in hex

  serialPrintUint64(results.value, HEX);

  Serial.println("");

  irrecv.resume(); // Receive the next value

 }

}

How to Use

Assemble the PCB components according to the BOM.

Upload the IR receiver code to the ESP32.

Point any standard remote control at the SBX-1610-52 module and press a button.

Open the Serial Monitor (115200 baud) to view the decoded signal format and hexadecimal code.