Just curious if i'd be able to use one of the many arduino nanos i have lying around to control a Whiskey still. My thought was that i could have a vent controlled by an arduino to close after a certain temp to vent off the methanol instead of having to monitor it myself and basically im lazy and dont want to have to continuously throw away the first bit of shine produced, i'd rather just vent it off.
Sure you can. If all you need is one temperature sensor and one vent/motor, than any arduino will be able do that with its hands tied behind its back.
An ATtiny45 can do it too.