I have an LM358 that I'm using now for a very simple comparator. I just set it at 3v and have it go high (5v) when it exceeds the 3v. Aren't there some simple DIP 8 chips that can do the same thing and are designed to be comparators? Maybe with more precision and schmitt trigger output etc? (I can't remember). I'm a hobbyist so these things aren't always on the top of my head. -- thanks for any help.