After being able to prove that my Java DMX tester code worked on the old hardware, it's now time to test it out with my new MacBook, which is where I do all my work. It's useful to be able to control DMX devices in order to test out sequences as I'm building them. MacOS is more Unix-like, and thus, connected serial devices don't appear on a Comm Port list. Instead, they appear as file handles under the "/dev/tty.*" folder structure. I'll need to identify which on the DMX dongle is and put that in the Java DMX Text project code. Test 1: Identify the USB Serial Device that is the DMX Dongle This should be a matter of plugging in the DMX dongle USB cable and approving the popup dialog to allow it. And it was, except that it took about 90 seconds for the dialog to appear and during that time I worried that it wouldn't work. But it showed up in the list: Test 2: Connect to the Dongle Here, I'll update the Java DMX Test project to connect to the named se...