GateSec Wi-Fi access control system, unlocking by NFC 13.56 MHz and reconciliation of records in remote SQLite SQLite sec.db card_id user_info access_lvl TEXT TEXT INTEGER Move examples into right destination mv sec_example.db sec.db mv config_example.rb config.rb mv validator_example/* validator/ Change parameters in config.h config.rb to yours. Used requirements: MFRC522.h v1.2.1 WiFi.h ArduinoJson.h v7.1.0 HTTPClient.h v2.2.0 Server requirements: bundle install RED LED NodeMCU ESP32 DEVKITv1 cathode GND anode D12 BLUE LED cathode GND anode D32 BUZZER - GND + D2 RFID-RC522 SDA D22 SCK D18 MOSI D23 MISO D19 IRQ empty GND GND RST D4 3.3V 3V3 TP 4056 USB + VIN (5V) USB - GND