Application 6 was the last major project in my Real-Time Systems course at UCF! In this project, I chose to build a room availability tracker for office buildings. This tracker would show whether a room was occupied and/or booked for a meeting. To prototype this, I implemented an ESP32 device along with some sensors and LEDs on Wokwi, a popular online simulator.
If the heat sensor read high enough (above the threshold for a human heat signature) and the light sensor read low enough (below the threshold indicating something obstructed a main chair in the room), the room's blue status LED would light up. If either the room's physical check-in/check-out button or a server webpage's check-in/check-out buttons were pressed, the red room availability LED would light up. Additionally, if all people in the room left while the room was booked, the room would automatically become free and turn off the blue and red LEDs.
You can find my Wokwi implementation here!