sudo apt-get install minicom
By default the Minicom program will attempt to use /dev/tty8, and will also attempt to initialize the device (expecting a modem) by default.
minicom: cannot open /dev/tty8: Permission denied
Run the program so that it starts the program on the USB converter that is connected by adding <tt>-D /dev/ttyUSB0</tt>, and specify that it should skip initialization by adding <tt>-o</tt>.
You can also specify from the command line that it use the baud rate and '8N1' settings specified below by including <tt>-b 115200 -8</tt>.