hello ...i am a newbei to arduino....i am working on proximity sensor.
I want to make a project using arduino that counts object passed from it and displays on LCD.
I need some help??any suggestion
A sensor like this (or similar: the come indifferent distance sensitivities) is basically just a switch, so it goes "on" when it sees something.
If you're really brand new at Arduino, you should work through the examples on the site, here before you get into an actual project.
When you've done that, you'll look into state changes. If you don't monitor the state of the sensor, it will count the same object a gazillion times as it passes. There's an example about that here, but work through the others first.