So I just destroyed my Macbook Pro by unintentionally putting 15 V through my Arduino analog port. While I know that one shouldn't change wiring while powered, this was still a bit of a surprise (not to mention a huge bummer!). I now understand a bunch of rules for avoiding this, but I'd like to be doubly safe in the future to avoid frying another laptop. Is anyone aware of a failsafe way to protect one's USB ports? I've tried looking for something like a surge protector for a USB port without any luck.
Thanks for any suggestions!