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Thread: help needed

  1. #1

    Default help needed

    hi

    i'm planning to make a mini project that involves 2 motors which
    have to move clock wise or anti-clockwise separately

    the movement depends on 4 switches

    to decode the logic i'm using IC CD4067BE (CMOS MUX/DEMUX) as a DEMUX
    & the 4 switches act as the select lines to the IC and generate

    logic 1 for clock wise
    & logic 0 for anti-clockwise

    thus i have used 2 ic's one for generation of logic for each motor

    this logic is then given to the motors(24v 150rpm dc) through Ic L293D


    -> i'm unable to figure out how to connect the motors and L293D??



    [/b]

  2. #2
    Super Moderator T-1000 docel's Avatar
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    Default

    Why do you need a MUX???
    You idea, but you cna do this with 'simple' Inverters.....

    Unless. ofcourse, you want to show this "complex solution" as a Project to your Profs........ :evil:

    I appreciate your 'original" thought for a project ( instead of Buying' a Ready project and claiming you did it all on your own), or 'downloading ' a Ready Net project....., but somehow, a very simple project is unbecoming of an Engineer :cry:

    Seeing you want to be a 'true' engineer, May I suggest something else, a little more interesting???
    docel
    ^Anything is possible..
    after YOU prove it!!

    http://bangalorerobotics.tripod.com

  3. #3

    Default

    hi docel

    i need the mux as there is logic
    for example out of the 4 switches(A, B, C & D) only one or 2 or three or all r pressed there is different logic for all of them and hence to simplify them according to me the MUX was the best solution instead of using a number of other gates

    use of MUX also alllows me to keep the logic decoding flexible

    nyways logic decoding is not the problem, the problem is that how do i connect the L293D with the dc motors
    [/b]

  4. #4
    Super Moderator T-1000 docel's Avatar
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    For 2 motors there cant be more than 10 combinations. Anyway....There are more than one way of doing the same thing.

    The L293 Datasheets are quite clear about the motor connection. What is the difficulty?
    docel
    ^Anything is possible..
    after YOU prove it!!

    http://bangalorerobotics.tripod.com

  5. #5

    Default

    what is the use of mux in this case
    4 switches?? for two motors there are four inputs(L293D), then what is the need of MUX when u have 4 switches.


    Bibin John
    www.bibinjohn.tk

  6. #6
    Super Moderator T-1000 docel's Avatar
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    Default

    :lol:
    :lol:
    :lol:
    docel
    ^Anything is possible..
    after YOU prove it!!

    http://bangalorerobotics.tripod.com

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