We thought that you’d like to see all the cool stuff that makes up our new controller.
Of course, we had to have a microprocessor. A microprocessor controls all the sequencing and logic. It also does a lot of work serving up web pages and communicating with the switches, remote controls, and motor.
Optoisolators provide protection against stray (or man-made) voltages.
The Clock crystal gives us a “tick” every 1/32,000,000 th of a second. That’s the basis for all timing functions.
A programming port – that’s where the programmer downloads his program for the 50th time after a series of mistakes 🙂
Relays are electrical switches (listen to them click) that control higher power loads (like the door actuators) that would burn out a microprocessor if connected directly.