Hello,
I will provide you Hardware connections step by step along with coding so you can also understand what I am doing (which is easy for students to explain the professors ).
I have checked the block diagram that you have attached.
Please confirm me following things
- What do you want to display on LCD - Temp, Humidity, Fan ON, Any Alerts?
- What is the name (like DS18B20, DHT11 etc) of Temperature, Humidity, Gas Sensor and LCD type you have?
I can complete this project on deadline which is depend on your availability to Test the codes with me on your Hardware.
Thanks,
Chanchal k