So I heard about this package on today’s Amp Hour podcast.
Autodesk owns a electronics simulation package (cloud based) that includes Arduino simulation. What this means is that you can build your circuits in a virtual way, program the virtual arduino, and then simulate how it will run. This includes serial monitoring. Seeing the waveforms, etc… Seems to be worth looking at for those interested in learning Arduino’s and electronics
Note: it requires you create an account to use