Quote Originally Posted by HankMcSpank View Post
Probably better for you to define track for your "0.7V" being presented to the PIC....

1. Immediately being notified when the switch is pressed? - use a comparator with PIC's comparator interrupt.

2. hopefully catching someone pressing a switch while polling the ADC Result very frequently? - use ADC and a tight main loop.
Both would probably work, although #1 is probably better for my project. Having said that, I'm using this project as a learning experience, so I will try both.

Thanks everyone