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Help! My BOE-BOT only stares at the computer screen — Parallax Forums

Help! My BOE-BOT only stares at the computer screen

EzsynnEzsynn Posts: 119
edited 2009-02-24 20:39 in Robotics
I have made my BOE-BOT look the computer screen (to his left) using the Ping))) Sensor and Bracket Kit
But how do you make him look at me? (to his right) without actually picking him up and to turn him around?
Can somebody give me the standard servo values?

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
BWIN ON DA POWAH WIFIN U!!!

Post Edited (Ezsynn) : 2/15/2009 4:52:58 AM GMT

Comments

  • GWJaxGWJax Posts: 267
    edited 2009-02-15 05:10
    750 is for center clockwise I think is 200 and counter clockwise is 1200

    Jax

    Please read the books on robotics and the servo download PDF for the servos!
    plus I did not look but I'm sure there's a PDF file on the scan head mount assy. down load this as well..

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    If a robot has a screw then it must be romoved and hacked into..
  • J. A. StreichJ. A. Streich Posts: 158
    edited 2009-02-17 15:35
    Tank drive works as follows, in a nut shell.

    Because the servos are back to back, for forward and back you send oppisite sides of the spectrum to get the wheel to turn "forward", that is looking at the side of the bot one will be clockwise one will be counter clockwise.
    To turn one wheel must turn "forward" and the other "back" , or look at the two sides of the bot the servos must both be turning the same direction. OR Only turn one wheel and leave the other stopped, this will turn more slowly and make a slightly "wider" turn.

    Forward - Left wheel counter clockwise, Right wheel clockwise
    Back - Left wheel clockwise, Right wheel counter clockwise
    Left - Either: Left wheel stopped, Right wheel clockwise OR both wheels clockwise
    Right - Either Left wheel counter clockwise Right wheel stopped OR both wheels counter clockwise.

    There is tons of sample code for how to write this, but given the info in this and Jax's post, you should be able to derive the right code. That said, it's a good idea to re-read the BOE-Bot manual section on servos. Really, it isn't long and it's simple to grasp.
  • EzsynnEzsynn Posts: 119
    edited 2009-02-22 02:09
    J. A. Streich said...
    Tank drive works as follows, in a nut shell.

    Because the servos are back to back, for forward and back you send oppisite sides of the spectrum to get the wheel to turn "forward", that is looking at the side of the bot one will be clockwise one will be counter clockwise.
    To turn one wheel must turn "forward" and the other "back" , or look at the two sides of the bot the servos must both be turning the same direction. OR Only turn one wheel and leave the other stopped, this will turn more slowly and make a slightly "wider" turn.

    Forward - Left wheel counter clockwise, Right wheel clockwise
    Back - Left wheel clockwise, Right wheel counter clockwise
    Left - Either: Left wheel stopped, Right wheel clockwise OR both wheels clockwise
    Right - Either Left wheel counter clockwise Right wheel stopped OR both wheels counter clockwise.

    There is tons of sample code for how to write this, but given the info in this and Jax's post, you should be able to derive the right code. That said, it's a good idea to re-read the BOE-Bot manual section on servos. Really, it isn't long and it's simple to grasp.

    We're talking about "standard" servo values here.

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    BWIN ON DA POWAH WIFIN U!!!
    (This means the Plutonium Isotope Nuclear Fission And Fusion Reactor Battery Pack you've been hiding inside your jacket!!!)
  • GWJaxGWJax Posts: 267
    edited 2009-02-22 02:22
    Ezsynn said...
    J. A. Streich said...
    Tank drive works as follows, in a nut shell.

    Because the servos are back to back, for forward and back you send oppisite sides of the spectrum to get the wheel to turn "forward", that is looking at the side of the bot one will be clockwise one will be counter clockwise.
    To turn one wheel must turn "forward" and the other "back" , or look at the two sides of the bot the servos must both be turning the same direction. OR Only turn one wheel and leave the other stopped, this will turn more slowly and make a slightly "wider" turn.

    Forward - Left wheel counter clockwise, Right wheel clockwise
    Back - Left wheel clockwise, Right wheel counter clockwise
    Left - Either: Left wheel stopped, Right wheel clockwise OR both wheels clockwise
    Right - Either Left wheel counter clockwise Right wheel stopped OR both wheels counter clockwise.

    There is tons of sample code for how to write this, but given the info in this and Jax's post, you should be able to derive the right code. That said, it's a good idea to re-read the BOE-Bot manual section on servos. Really, it isn't long and it's simple to grasp.

    We're talking about "standard" servo values here.

    Yes I gave you standard settings for the servos. Have you not tried to find the center value? If you have that then it's just testing out how far you can push it. If your not using continuous rotation servos, you must make a mod to them. If you don't know how to do this then give me the servo number and make and I'll find a mod that you can make it work..
    If thats not the answer your looking for the please post everything you are trying to do and we'll help you out.

    Jax

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    If a robot has a screw then it must be romoved and hacked into..

    Post Edited (GWJax) : 2/22/2009 2:28:01 AM GMT
  • EzsynnEzsynn Posts: 119
    edited 2009-02-22 04:21
    GWJax said...
    Ezsynn said...
    J. A. Streich said...
    Tank drive works as follows, in a nut shell.

    Because the servos are back to back, for forward and back you send oppisite sides of the spectrum to get the wheel to turn "forward", that is looking at the side of the bot one will be clockwise one will be counter clockwise.
    To turn one wheel must turn "forward" and the other "back" , or look at the two sides of the bot the servos must both be turning the same direction. OR Only turn one wheel and leave the other stopped, this will turn more slowly and make a slightly "wider" turn.

    Forward - Left wheel counter clockwise, Right wheel clockwise
    Back - Left wheel clockwise, Right wheel counter clockwise
    Left - Either: Left wheel stopped, Right wheel clockwise OR both wheels clockwise
    Right - Either Left wheel counter clockwise Right wheel stopped OR both wheels counter clockwise.

    There is tons of sample code for how to write this, but given the info in this and Jax's post, you should be able to derive the right code. That said, it's a good idea to re-read the BOE-Bot manual section on servos. Really, it isn't long and it's simple to grasp.

    We're talking about "standard" servo values here.

    Yes I gave you standard settings for the servos. Have you not tried to find the center value? If you have that then it's just testing out how far you can push it. If your not using continuous rotation servos, you must make a mod to them. If you don't know how to do this then give me the servo number and make and I'll find a mod that you can make it work..
    If thats not the answer your looking for the please post everything you are trying to do and we'll help you out.

    Jax

    It's 650

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    BWIN ON DA POWAH WIFIN U!!!
    (This means the Plutonium Isotope Nuclear Fission And Fusion Reactor Battery Pack you've been hiding inside your jacket!!!)
  • J. A. StreichJ. A. Streich Posts: 158
    edited 2009-02-24 16:51
    Alright, are these the servos that came with the BOE-Bot kit? I assume not.
    You are using 2 servos to tank drive or single servo for piviot?
    You say they are "650" but whose the manufacturer?
  • GWJaxGWJax Posts: 267
    edited 2009-02-24 20:39
    It's hard to help out someone when they don't give all information about their project. It also really does not matter if you built a boe from scratch, even I am doing that and I'm using modified futaba servos, its no big deal if you did that but just don't hide it from those of us that are trying to help. Post some code and we may be able to get you started in the right direction.

    Jax

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    If a robot has a screw then it must be romoved and hacked into..
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