I want them to show CPU and GPU temp. In this post a guy shares how it to show them in a LCD https://projecthub.arduino.cc/zakrzu/f73c6780-5b6d-43e3-8f71-7ca992daa858
OK, Have you confirmed that your operating system will provide an actual temperature value or just a number from 0 to 10?
What? I guess it will send the actual temperature as seen in the code
OK, first things first. You are running a Windows operating system correct?
Next the link you provided is similar to others I have seen. The author seems to skip quite a bit of information. Yes, you can download the .dll file mentioned but his images reflect a Solution Explorer which looks to me like taken from Microsoft Visual Studio for C#. The author is creating a form for C#. In his image the solution explorer is showing what he has on the form. Combo Bax, Labels, Buttons and so on.
Then we have
The latter being the form with two drop down combo boxes and a few labels. The author covers none of this?
What's going on here is you download and load a .dll file (Dynamic Library Link) . The program calls on that .dll to get your system information. The executable file actually looks like this:
Those are my system numbers. All of this gets a little complicated and the author leaves out extensive information. Unless you have extensive programming skills I would not even think about using that link.
Read up on WMI. Even then your project will not be simple or a walk in the park.
Click my images to expand and make them readable.
Ron
This is basically what im doing with the voltmeter, no need to get any kind of converter, it just works the way I thought
Also I have already found a python program to send the temps to the arduino.
Thanks for your help 
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