I'm planning to do a project at my workplace to count the number of boxes passing through on the conveyor.
Can anyone have any idea how to build it?
What all components needed?
Code for Arduino?
And Can I get data from Arduino to Excel in which it shows time in one column and Cunt in another?
If you want someone to build this for you, by all means post in the Gigs & Collaborations part of the forum.
Otherwise, do a search on this forum as this kind of projects come by on a rather regular basis. Lots of info is out there and which works for you depends on many parameters that you didn't give such as speed and size required.
Other than that, for sure it's possible.
Detect the boxes using maybe a break beam sensor or ultrasound as they pass; use an RTC to have actual time; store counts on on an SD card or send it directly to a connected computer; export CSV file that you can directly import in a spreadsheet application such as Excel.
Also posted to Gigs and Collaborations section:
http://forum.arduino.cc/index.php?topic=504593
I suppose if that thread is used only to discuss paying someone to do it and this thread is used for helping OP do the project then it's not cross-posting but if so it would have been better if they explicitly stated that. Generally it would have been better to move the thread to the other section by clicking the "Report to moderator" link on the bottom of the post and then asking nicely for the moderator to move it.