Motion sensors that detect a person walking in between two points.
The set up involves 5 plinths in between two walls in a room, in a line.
I would like to have this set up such that when some one walks through any of the spaces between plinths or walls, the motion sensor/s detect this, the data is sent to the arduino which in turn shows it on a graph.
So I think I would need a motion sensor detects a change when a light beam is blocked. I don't know much about motion sensors but Ill do some reading now.
Thank you very much for your replies.