Toward Autonomous Room Reservation

IoT-based solution using PIR_motion, M5StickC ESP32-PICO, Arduino, Adafruit WINC1500 WiFi Shield, 4G-Dongle, Raspberry Pi,

System Diagram

         (dhcp)         bridge
           ╱    wifi    ┌───────┐
mobile-phone <~.~.~.~.> │(wlan0)│
                        │    br0│RPi
      4G-Dongle <──────>|(eth1) │╲
           ╲    wired   └───────┘╱
         (dhcp)            192.168.66.1

References