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Thread: Sensor bot

  1. #1
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    Sensor bot

    This is a sensor robot and as the name implies it has a number of sensors.
    [1] IRPD sensor
    [2] GD2P12 IR sensors
    [3] bump micro switches
    [4] PIR
    [5] Ping Ultra sonic
    [6] CDS for LED headlights

    None sensor
    [7] Emic text to speech
    [8] Pan/tilt
    [9] Co-Processor [Bluebell design]

    This project took about 6 months to complete and is not yet finished programing wise.

    Check out the CO-Processor specs here:
    http://www.bluebelldesign.com/CoProcessorFeatures.htm




    Below is a tutorial on how it was built

    Pics to come
    Last edited by 4mem8; 04-24-2008 at 03:25 PM.
    People yearn after this robotic dream, but you can't strip your life of all meaning, emotion and feeling and expect to function.


  2. #2
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    Re: Sensor bot




    Holes drilled for the servos,casters and main cpu boards.





    Paper removed from acrylic sheet.







    Placement of main CPU board



    Bluebell design co-processor board, The start of inserting components, Ic sockets and header pins.




    Bluebells co-processor board, Electrolytic caps installed.




    Bluebells co_processor board, Resistors installed.



    Bluebells co_processor board, Underside.



    Parallax BS2P40 Demo board underside and alloy stand off brackets.



    Parallax BS2P40 Demo board with stand off alloy brackets.



    Parallax BS2P40 main board and BS2 syntax manual



    Two alloy brackets for holding the servos, Servos are continuous rotation type.



    Servos and casters mounted.



    Wheels mounted to servos.



    Next a set of casters that match the height of the bottom of the servo wheel so that when the base sits flat on a table there is NO rocking of the base.



    Right side up and all mounted.

















    Last edited by 4mem8; 04-24-2008 at 06:10 AM.
    People yearn after this robotic dream, but you can't strip your life of all meaning, emotion and feeling and expect to function.


  3. #3
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    Re: Sensor bot




    Soldering LED wires to co-processor board.



    Next we have fabricated an alloy bracket for the battery box which is fixed between the servos. The batteries are 2,500mah Enegizer recharghables.



    Next we have to make a bumper, this is fabricated from 1mm alloy with a SQ LEGO 4x4 block glued to the back of bracket and it uses the hole through the center for the rod support.



    These are our IRPD infra red distance sensors { Phillips ] Center one is the receiver and two outer ones are transmitters.




    LEGO Technics parts used for the housing of the IRPD transmitters.



    The sensors are a perfect fit into the Technic parts.



    Receiver IRPD fitted center top, the four LEDS below are the headlights 8,000 MCD. [ Brightness]



    This is my ping ultra sonic system with pan/tilt servos and Lynxmotion pan/tilt brackets, Ping from Parallax. 5mm acrylic base to mount pan/tilt on.



    Side view of pan/tilt sensor.



    Top view showing pan/tilt fitted to the front and co-processor board.



    Front view of pan/tilt.



    GD2P12 IR distance sensors and alloy brackets.



    PIR [ passive infra red ] from Parallax and mounting bracket.



    Bumpers and sensors in place.




    Main BS2P40 Demo board and sensors in place.




    Rear view of GD2P12 sensor.



    Another rear view.

    People yearn after this robotic dream, but you can't strip your life of all meaning, emotion and feeling and expect to function.


  4. #4
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    Re: Sensor bot



    Scm [ servo control module ] top left and Emic speech processor mid left, most wiring now complete.



    Battery pack for LED headlights [ blue ] Top right is a future add on, Line following circuit board.



    Left view



    Work completed to date

    More to come

    2007 4mem8
    People yearn after this robotic dream, but you can't strip your life of all meaning, emotion and feeling and expect to function.


  5. #5

    Re: Sensor bot

    Fantastic! I really like the step-by-step you provided too.
    It is far better to grasp the universe as it really is than to persist in delusion, however satisfying and reassuring. --Carl Sagan

  6. #6
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    Re: Sensor bot

    Archcvd: your welcome, Hope everyone enjoys it.
    People yearn after this robotic dream, but you can't strip your life of all meaning, emotion and feeling and expect to function.


  7. #7
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    Re: Sensor bot

    Very nice write up, I like that you did a step by step, I should really do something similar on my next bot.

  8. #8
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    Re: Sensor bot

    Tyberius: Many thanks for your comment, It is time consuming doing a detailed write up but I think well worth it for the viewers. As they can see what is involved in building a robot, whether simple or complex. I would love to see a detailed tutorial of your bots. Although your J5 is pretty good.
    People yearn after this robotic dream, but you can't strip your life of all meaning, emotion and feeling and expect to function.


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