I keep hearing people saying "you can't power a servo straight from the Arduino" or "you can't power a relay directly through the Arduino".
In my experience this just isn't true. I've triggered relays, flipped servos, and turned steppers straight from the +5V pin. One of my Unos had 30 amps fed through the VIN pin once and it still works. All three of them survived a defective prototyping shield which shorted out any Arduino it was connected to.
Am I going crazy? Are the boards I have just weirdly resilient? They are from three different manufacturers and they're all here.