Design and simulate an IoT device for a smart home, using the MQTT protocol for asynchronous communication that employs a publish/subscribe model where devices can publish messages to an MQTT broker and subscribe to specific topics to receive relevant messages.

• ESP32 card
• Pir sensor
• LDR sensor
• Relay
• DHT22 sensor

This is the link of wokwi project simulation: https://wokwi.com/projects/389532735027299329

Our system is controlled by two applications: a Python desktop application and a Flutter mobile application.