Noob / getting started : driving a digital tach

I have had an idea for a small project and while i’ve had some experience with electronics it has been YEARS. I was looking around and came across this cute little thing:) Seems like it would save me a lot of hassle. What I would like to look at doing is driving a digital tach from a car (I’m assuming a fairly standard signal drives this). I want to drive this with the cpu readings from a mobo through the arduino.

Any quick thoughts on the feasibility of this?

Cheers in advance!

It sounds like it can be done. First you need to find out what the tach needs for an input, what levels, speed and form. Then you can have the arduino output that to the tach. After you get that working then start on the control.