Hello, everyone!
Now, with the current situation and all, we are doing remote education on uni. I have an arduino kit that I want to use as some ways of demonstration for my digital electronics lab, so I don't only send in schematics with no ways of demonstrating at least how things should work, and with the lack of ICs, I'm trying to use Arduino as a tool to help me in this sense (and hopefully get better grades in the process).
Now, one of my tasks would be to use a bi-color LED both ways, achieving green, red and yellow lights in a sequence. But that would mean that if I only use an arduino, I have to use two output pins, one as voltage and one as ground. I really don't want to fry my precious new toy, especially since I could barely afford this one. Can I do this? If I can, how? If not, I'll skip this one, but it would be nice to achieve it somehow.