Dear all,
I hope this message finds you well.
I am not very familiar with programming. etc but keen to learn ...I would like your opinion regarding how complicated do you believe this project can be.
I would like to have several hygrometer and thermometer sensors ( ideally 6) located in different places on the same.room ( floor, close to window, ceiling etc) and connected via WiFi in order to have on my phone the readings.
Is this something difficult to achieve?
For a complete beginner, this would be a very difficult project.
For someone with good programming skills and a lot of experience with Arduino, it might take several weeks to implement and work out the problems.
I guess if I wanted to do this I would start by choosing a sensor or sensors. You choose your sensors based on temperature and humidity range you want to measure and the sensor uncertainty (accuracy). Once you decide on a sensor which will give you the data you want you choose a micro-controller which will process your data and since you want to view the data on a smart phone you need WiFi capability.
A simple DHT 22 will give you temperature and humidity and an ESP 8266 will work assuming you already have a WiFi network. Start by reading this. ESP8266 DHT11/DHT22 Temperature and Humidity Web Server with Arduino IDE. That link covers only a single sensor so you will need to edit and or modify your code. You can see where how to do multiple sensors is covered here.
Unless you wish to take your project to the paid help section nobody here is going to build your project for you. You can get guidance but you are expected to do the work. I agree with:
Ron