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Thread: Simple & Cheap Decoder Circuit Diagram for Rotary-Encoder

  1. #1
    Indo_FS Guest

    Default Simple & Cheap Decoder Circuit Diagram for Rotary-Encoder

    [font size="1" color="#FF0000"]LAST EDITED ON Apr-12-02 AT 03:44AM (EDT)[/font][p]
    This will accept mechanical or optical rotary encoder :

    http://www.geocities.com/indo_fs/encoder.jpg

    or try this address :

    >http://www.geocities.com/indo_fs/encoder.jpg<

    Indo_FS


  2. #2
    Indo_FS Guest

    Default RE: Simple & Cheap Decoder Circuit Diagram for Rotary-Encoder


    Or this pictures :

    http://indofs.freewebsitehosting.com/encoder.jpg

    Francisco

    Indo_fs

  3. #3
    Indo_FS Guest

    Default RE: Simple & Cheap Decoder Circuit Diagram for Rotary-Encoder

    [font size="1" color="#FF0000"]LAST EDITED ON May-06-02 AT 08:48AM (EDT)[/font][p]Or this :

    http://www.angelfire.com/linux/indofs/encoder.jpg


    Francisco

    Indo_FS


  4. #4
    sewells Guest

    Default RE: Simple & Cheap Decoder Circuit Diagram for Rotary-Encoder


  5. #5
    Indo_FS Guest

    Default RE: Simple & Cheap Decoder Circuit Diagram for Rotary-Encoder

    [font size="1" color="#FF0000"]LAST EDITED ON May-11-02 AT 09:36AM (EDT)[/font][p]
    Then goto this website :

    http://indofs.tripod.com/

    That site is for the scematic only...

    IndoFS

  6. #6
    badfish Guest

    Default RE: Simple & Cheap Decoder Circuit Diagram for Rotary-Encoder

    Where did you get that diagram?

  7. #7
    badfish Guest

    Default RE: Simple & Cheap Decoder Circuit Diagram for Rotary-Encoder

    incase you havent notice... the diagram you posted wont work... because the pin #14 is grounded. it's supposed to be connected to the Vcc(5volts).

    correct me if im wrong...



  8. #8
    Indo_FS Guest

    Default RE: Simple & Cheap Decoder Circuit Diagram for Rotary-Encoder

    [font size="1" color="#FF0000"]LAST EDITED ON May-15-02 AT 08:01PM (EDT)[/font][p]Yes, you are wrong :) , and the circuit works fine.

    Although I forgot to add Vcc marking, but if you know (or have the data sheet for those ICs) that pin 14 is for Vcc then it explain everything...

    See the NOT gate of IC1 of pin 10-11, there.. you see? It clearly show between the Vcc and Ground (up-line for Vcc, down-line for Ground).

    And yes the rotary common pin is connected to Vcc, unless you have a different type of Optical Rotary Encoder that requires grounded common pin then you should easily convert/change/modify the input part.

    The greatness of this circuit is the IC2 part, because it's simple, you can even eliminate IC1 if you'r using Mechanical-Rotary-Encoders.

    http://indofs.com/images/encoder.gif


    Indo_FS

    http://indofs.com/images/indofs.jpg



  9. #9
    badfish Guest

    Default RE: Simple & Cheap Decoder Circuit Diagram for Rotary-Encoder

    thats a better circuit now...:D but im confuse... what is that grounded connection between 11-10 and then connected to the vcc? can that short circuit the vcc and ground? can you explain more? because i want to use your circuit but i cant understand how you make it work? By the way, im using a mechanical rotary encoder.

    Thanks

  10. #10
    Indo_FS Guest

    Default RE: Simple & Cheap Decoder Circuit Diagram for Rotary-Encoder


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