You first need to remove the modemmanager as follows:
Next, you need to add your user to the dialout group as follows:
Finally, reboot your machine. Now your user should be able to load minicom without root.
Every time I use sudo I am prompted for my password. Here is how to configure not to be propmpted again. You first need to open a terminal and at the command line use visudo to edit the sudoers list.
At the end of the file (prior to the "#includedir /etc/sudoers.d" line) add the following:
Be sure to replace username with your specific username.
“Live as if you were to die tomorrow. Learn as if you were to live forever.”