2 layers

RFID
LeafCodes/esp32s3-rfid-attendance
Local-First & Offline-Resilient RFID Attendance System built with ESP32-S3, PlatformIO, Custom KiCad PCB, and FastAPI Backend.
28 parts
Boards in 1 GitHub repository, designed in KiCad, that use the BCV29 by Nexperia (1.3W 100nA 1V 20000 220MHz 30V 500mA NPN SOT-89 Darlington Transistors ROHS). See how each wires it, with its parts, size, README and files; the BCV29’s symbol, footprint and pinout are on its own page.

LeafCodes/esp32s3-rfid-attendance
Local-First & Offline-Resilient RFID Attendance System built with ESP32-S3, PlatformIO, Custom KiCad PCB, and FastAPI Backend.