Smart Home Cooling/Heating System

1- Short description

• Broker.py starts broker and establishes connection with publishers/subscribers clients. Although connections are successful, subscribers fail to invoke the on_message method.
• Thermostat.py is an MQTT subscriber that monitors, and adjusts home temprature based on the smart home system model. The temprature is set based on FIFO entry priority inside the household.
• SmartDoorLocker.py is an MQTT publisher simulation of people enetring or leaving the house.
• ManagementApp.py is an MAQTT publisher that manages personel that are members of the household. It also allows view of household members and reset of members.

2-Software libraries

• hbmqtt (https://hbmqtt.readthedocs.io/en/latest/).

• paho-mqtt (https://pypi.org/project/paho-mqtt/).

• asyncio (https://pypi.org/project/asyncio/).

• pymongo (https://api.mongodb.com/python/current/installation.html).

3- OS information

• Python program can be run by vriaty of OS including Windows and Linux systems.

• On Linux:

python versions 2.7.9+ or 3.4+ and corresponding pip.

pymongo version 3.10.1.

Supports MQTT protocol version 3.1 and 3.1.1.

• on windows:

python version 3.8.1.

pip version 19.2.3.

pymongo version 3.10.1.

4- Required tools

Installing of libraries:

Windows: In terminal, on code directory where the program folder was cloned, write the following lines

1- pip3 install hbmqtt paho-mqtt asyncio

• installs libraries to support for hbmqtt, paho-mqtt and asyncio

2- python3 -m pip install pymongo

• installs necessary libraries for the Mongodb (NOSQL)

5- How to run the programs

Windwows:

On terminal where the code directory is, three terminals need to be open for the whole programs to run:

First terminal

• python3 Thermostat.py

Second terminal

• python3 ManagementApp.py

Third terminal

• python3 SmartDoorLocker.py

Fourth terminal (not fully functional, but implemented)

• python3 Broker.py

To establish connection successfully to the broker instead of the open source broker used for the project, then:

1- Open program in any IDE

2- Find broker_address = "test.mosquitto.org" variable in Thermostat.py, ManagementApp.py, and SmartDoorLocker.py, and comment them

3- Right below these variables, there are another commented broker_address = "localhost" that connects to localhost broker and un-comment them

4- Run Broker.py, then run Theromostat.py, ManagementApp.py and SmartDoorLocker.py