I need a precision pulse generator. I want a PIC to generate a precision low output exactly once a second. The active low pulse needs to be about 120 microseconds long and must occur exactly once a second. Well pretty darn close to exactly. Is this possible with Picbasic?

Which PIC has a built in high stabillity oscillator by the way to keep component count down?

Also, later I may input an external GPS pulse into the PIC to keep it more accurate. How hard would that be?

Matt