I am thinking of building an auto-greeting circuit for my final project.
My idea for the project is using two sensors A and B.
A message will play when both sensors A and B detected a signal.
If sensor A detected a signal first then B, message 1 displays.
If sensor B detected a signal first then A, message 2 displays.
Both sensors are down, offline when either message is playing
and back, or online after finish playing.
Any ideas are appreciated
Once again Thank you.