counting system

Discussion in 'The Projects Forum' started by ramphisaj, Mar 12, 2007.

  1. ramphisaj

    Thread Starter New Member

    Oct 18, 2006
    7
    0
    my project is as follows:

    i have to bould a system that can eb able to count a number of objects and display using 7 segments the number counted. if a certain number of objects is reached, the circuit should switch off using a relay and turn on again after 10 seconds to count again.

    my ideas:
    -i will use a phototransistor to detect the object
    -use a counter to count the object
    -use 7 segment to display the number of objects
    -use a time switch (relay) to switch off the system

    i need some suggestions and tips in order to complete the project


    what i need exactly is : the type of circuit elemets and maybe circuit diagrams for the porject
     
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    This project seems quite simple and straightforeward.

    Can you stae what specific problems you are having? It would be helpful if you can post up the schematic for the circuit you propose to use.
     
  3. sameerphadke12345

    New Member

    Sep 18, 2008
    3
    0
    I HAVE DONE THIS PROJECT IN MY COMPANY FOR COUNTING NO OF CHOCALATE BARS
    IT IS RUNNING SUCCESSFULLY
    I AM FACING FOLLOWING PROBLEMS
    RESET PULSE WHICH I HAVE USED IS NOT FULL PROOF CAUSING PROBLEM
    AND SIGNAL FOR SHORT COUNT IS NOT COMMING
    SO NOW INSTED OF MECANICAL RELAYS I AM TRYING IT WITH LOGIC GATES AND TIMERS
    I WILL BE BACK TO YOU IF IT SUCCESSFUL
    THANKS SAMEER
     
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