Every sketch I look at has the HC05 being used on the digital pins using one of the software serial libraries. Why is that? Aside from having to disconnect a pin while loading a sketch, wouldn't using the on board hardware serial be as good or better? Is there an advantage I'm missing? I may be adding a second HC05 in the near future, and will have to use software, but that's a totally different thing since the Nano only has 1 serial port built in.
Joe