The problem is at some point your can_message has len < 5 thus the index error
what is the output from print(message_split) just before the error?
what is the output from print(message_split) just before the error?
If you can't explain it to a six year old, you don't understand it yourself, Albert Einstein
How to Ask Questions The Smart Way: link and another link
Create MCV example
Debug small programs
How to Ask Questions The Smart Way: link and another link
Create MCV example
Debug small programs