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Holonomic roamer — Parallax Forums

Holonomic roamer

T-manT-man Posts: 24
edited 2009-02-04 22:08 in Robotics
OmniBOT is a three-wheeled platform using three holonomic wheels and a Basic Stamp mounted on a BOE.· The sensors are I.R. and Ping ultrasonic.· The code is revised from the autonomous roaming program originally writtin for the BOEbot.· This was an ideal and innexpensive platform for experimenting with holonomic movement.

Here·are the links:

http://www.youtube.com/watch?v=DXHf7BPDrK4

http://www.youtube.com/watch?v=0z9zwSuzyXU



T-man··· cool.gif··


OmniBOT
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OmniBOT 678.1K

Comments

  • Chris SavageChris Savage Parallax Engineering Posts: 14,406
    edited 2009-02-03 21:03
    This post is being moved to the Robotics Forum until it meets the criteria for a completed project.· If you have any questions about criteria please read the sticky thread in the Completed Projects forum.

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    Chris Savage
    Parallax Engineering
  • Cole LoganCole Logan Posts: 196
    edited 2009-02-03 22:08
    That looks pretty cool. I've always wondered how well those wheels work on carpet.
  • T-manT-man Posts: 24
    edited 2009-02-04 17:34
    Chris,

    My apologies about my posting in the wrong spot.· I actually knew better, just wasn't thinkin.· Thanks.· shakehead.gif


    Cole,

    Thanks for the comments.· Keep in mind that the Parallax continuous rotation servos offer plenty of torque for carpet roaming.· It's wheel diameter that matters in this case.· I could have done better with larger wheels...I simply used what I had laying around.· They run on carpet fine...it's traversing from hard floor to carpet and vice versa that could provide a bit of drag.

    T-man· cool.gif
  • Peter J. FischelPeter J. Fischel Posts: 28
    edited 2009-02-04 18:34
    Hmmm its kinda cute. Hate those wheels though, can't really say why though. I see them around a lot these days.

    Could you point me to where you got the robot parts. I like to see different components to build a robot body [noparse]:)[/noparse]

    Thanks.
  • T-manT-man Posts: 24
    edited 2009-02-04 21:44
    Peter,

    The wheels are 4cm holonomic rubberized for traction, available through Acroname Robotics.· You can also do a web search for holonomic wheels.· Again, a larger diameter would afford greater surface movement alacrity.· The chassis was constructed from components purchased from Budget Robotics.· There's also some scrap components I adapted for this prototype.· The brain, sensor, servos and modified code·are Parallax through and through.

    T-man
  • Cole LoganCole Logan Posts: 196
    edited 2009-02-04 22:08
    I found this 4 inch holonomic wheels. There made by VEX. There $25 for two

    heres a link.
    forums.parallax.com/forums/post.aspx?f=10&r=r&m=325502
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