Component Selection Analysis – ESP32 Multi Security Tool

This article analyzes the component selection for an ESP32-based portable multi-security tool capable of WiFi scanning, RFID/NFC reading, IR signal capture/replay, and data storage. Each module—VS1838B IR receiver, PN532 NFC module, ESP32 microcontroller, and Micro SD card module—is evaluated based on compatibility, capabilities, limitations, and alternative options. The design prioritizes real-world applicability, software ecosystem support, and multi-interface integration.