CAN Shield send from Uno voltage inputs

I have a Arduino uno and have connected 0-5v signals on the board. I would like to take that input and retransmit that value on the a CAN bus. I have a shield and can not find any code or explanation to understand how to translate it.

Is someone interested in making a sketch that would do it or is there a place that has it done.

Any direction is appreciated.
Thank you

Can you describe it in detail, for example, which shield do you use? What modules are used in your project?
Here is an article, I wonder if it can give you enough help you need.