Component Selection Analysis – ESP32 Multi Security Tool

Designing a portable, multi-functional embedded system requires more than just assembling hardware—it demands careful component selection based on compatibility, real-world applicability, and software support. This project presents an ESP32-based device capable of: WiFi network scanning and basic security classification Read RFID/NFC cards Infrared (IR) signal capture and replay Store and analyze data The following analysis explains the rationale behind selecting each component, along with alternatives and limitations. Understanding the Design Requirement To build a multi-purpose tool, the system must support: Feature Required IR communication Capture and replay signals NFC interaction Read card UID WiFi analysis Scan and classify networks Storage Save card UID'S data UI Display and navigation These requirements guided the selection of each module in the system. IR System Selected Components VS1838B IR Receiver 38 kHz IR Transmitter Module Rationale Most consumer electronics operate us