Firmware Setup

Firmware Setup (Arduino IDE)

1. Copy the entire RFID_Access_Control/ folder. Do not rename it -- the folder name must match RFID_Access_Control.ino or the sketch won't open correctly in the Arduino IDE.
2. Open RFID_Access_Control.ino in Arduino IDE.
3. Tools > Board -> "ESP32S3 Dev Module".
4. Board options under Tools:
   • USB CDC On Boot: Disabled
   • Flash Size: 16MB (128Mb)
   • Partition Scheme: Custom (uses partitions.csv from sketch)
   • PSRAM: OPI PSRAM
   • Upload Speed: 2000000
5. Install libraries listed in Hardware and Wiring.
6. Sketch > Upload.

If upload fails, some ESP32-S3 boards need the BOOT button held during upload.

Serial Port Configuration

The firmware uses 2000000 baud (SERIAL_BAUD in Config.h). The Python CLI auto-matches this rate. Mismatched rates cause garbled output.