I plan to use the onboard regulator to accept 12vdc from a lead acid battery. The battery actually has 12.5 volts. Is this going to be a problem? I want to attempt to use this onboard regulator instead of a separate linear regulator. The pro mini will be controlling a relay. That is all. Possibly an LED. I am not sure of the current draw on the relay board I have but should be minimal.
Will the onboard regulator handle the current requirements of the pro mini and relay?