All I did was follow instructions, but hey… it worked! Of course, it didn’t work at first since I put the wrong resistor on the LCD’s contrast pin. Lesson learned: use a good light when reading resistor color codes.
As a software engineer by training, I had a handful of electricity and magnetism and circuits courses, but to be honest, I’ve forgotten most of that. So while working through the hands-on guide, I’ve tried to refresh myself on some of the basics of Electronics 101.