:01s4:
dear Brothers
I Am A Mechanical Engineering Student, And I Have A Project Which I Have To Finish But I Am Facing A Small Electronic Problem Which I Will Be Thakfull If You Help Me To Solve It


The Problem Is That: My Project Is A Coins Sorting And Counting Machine
The Machine Has To Sorrt (tosannif) The Coins According To Their Types And To Count The Number Of Each Kind

My Problem Is That After I Sorte The Coins I Have To Count Them So I Used A Counting Circuit Bases On (74ls192 Counter + 74ls47 Coverter + 7 Segments Led) And My Mai Problem Is That I Have To Find Another Circuit Which Consists Of Light Sender And Light Reciever (detector) In Such A Way That Each Time A Coin Pass Or Cross The Light The Circuit Will Send A Cubic Signal To The 74ls192 Counter To Add 1

I Hope U Can Provide Me With Circuit Which Can Solve This Problem

Note: The Coin Will Cross The Light With High Speed

do u mean a laser beam?
maybe this will help