I have big LED screen (2 x 2 meters) and I want to change image on that screen when someone touches it.
Could you give me advise how to do it or some sensor names for further research?
i saw something like that on a street... behind a window...
they put something like a camera on the floor and when the finger approached the window the TV would show a menu...
enthusiast:
I have big LED screen (2 x 2 meters) and I want to change image on that screen when someone touches it.
Could you give me advise how to do it or some sensor names for further research?
Do you need to know what part of the screen they poked at or just that someone poked at the screen?
If you just need to know that someone has poked at the screen you could put a framed piece of clear plastic over the screen and have a button that gets pressed when someone pushes on the plastic.
For more detailed sensing you can shine IR lights across the screen to IR receivers. Scanning the lights and receivers will tell you when and where an object close to the screen interrupts the IR beams.