K8028 suggestion

Hi!

I’ve got a couple of 8028’s. I want to control them from a Arduino (AVR). So I basically want the microprocessor to replace the shortening button.

Is there a standard solution for replacing a shortening button with a microprocessor? Maybe a optical device like a 4N27 as in the 8064?

regards, Per

Edit:
I noticed that some uses a Vactrol optocoupler for similar purposes. Maybe that’s a viable way to take µP control over the 8028?