How to use serial port module to assemble a remote control to control home devices?

[tracyyun]

Hello everyone, I would like to ask a question about home automation and serial port modules. I've been thinking about how to make a custom remote that would allow me to control various smart devices in my home, such as smart TVs, speakers, lights, and temperature controls, from a central point. I've heard that a serial port module might be a good option, but I'm not sure how to get one.

I wanted to be able to create a remote that was functional at a reasonable cost and ideally could communicate with a variety of devices. I also wanted to make sure the remote was easy to use and maintain. Here are some of my key requirements for this project:

Choose the appropriate type of serial port module to communicate with your home devices.
Determine appropriate communication protocols to meet the needs of different devices.
The serial port module needs to be programmed and configured to ensure that the remote control can identify and control each device.
Build a user-friendly interface so family members can easily use the remote.
Consider remote control security and privacy to protect home devices from unauthorized access.
If possible, I'd like to be able to support remote control so I can control home devices when I'm out and about.

Can anyone give me some advice on how to start this project, or share some relevant cases and parameters? thank you all!