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Thread: Arena Networking/Robot Communication

  1. #11
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    Re: Arena Networking/Robot Communication

    Size wont make a difference. 1ft or 10ft same result will happen.

    The problem with a Faraday Cage in this case is the frequencies your working with.

    You can even try this and it should work.

    Put a simple am/fm radio in your setup it will give white noise as you you seal the cage. And should recieve a signal again once the top is pulled off. This way you know for sure your cage is working. A start point. If there is leak in the cage the radio would pick it up. Simplest way of testing this.

    But when you try to shut down a high frequency device like the routers it wont work. Your still going to read any signal out there. Aswell as transmit within, as your phone still had its carrier signal and you could place a call from within the cage.

    Its helping some as you can see. It might increase if you box of the bottom, as the sheet flaps around the bottom is hurting you some.
    Last edited by Quantum; 05-05-2010 at 11:52 PM.

  2. Re: Arena Networking/Robot Communication

    What is the level of hardcore? Are we talking about a plexiglass arena?

  3. #13
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    Re: Arena Networking/Robot Communication

    Quote Originally Posted by jeanlee411 View Post
    Masonite [boards - not siding] will stand up to the plastic bb's w/o a problem and they'll take spray adhesive easily - they won't stand up to metal bb's, but I don't think that they're used in hardcore?

    [EDIT] PS: Maybe these related posts should be relocated to a distinct thread for arena design? <shrugs>


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  4. #14
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    Re: Arena Networking/Robot Communication

    I was wondering what forms of communication with the robot are allowed. Are rf transmitters like ones for rc cars allowed as a means for controlling the robot? i was also considering adding 433 mhz transceivers to allow my mech to send information about which targets are being shot at to my computer. are those legal?

  5. #15
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    Re: Arena Networking/Robot Communication

    Quote Originally Posted by byi View Post
    I was wondering what forms of communication with the robot are allowed. Are rf transmitters like ones for rc cars allowed as a means for controlling the robot? i was also considering adding 433 mhz transceivers to allow my mech to send information about which targets are being shot at to my computer. are those legal?
    They're legal, but I sure wouldn't recommend them. Anything without a digital packet resend algorithm is basically going to be near useless given the RF interference we've seen at RoboGames.

    -Fergs

  6. #16
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    Re: Arena Networking/Robot Communication

    Quote Originally Posted by byi View Post
    I was wondering what forms of communication with the robot are allowed. Are rf transmitters like ones for rc cars allowed as a means for controlling the robot? i was also considering adding 433 mhz transceivers to allow my mech to send information about which targets are being shot at to my computer. are those legal?
    Most mech builders are using a set of 2.4GHz XBee modules for their wireless communication.

  7. #17
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    Re: Arena Networking/Robot Communication

    Quote Originally Posted by Upgrayd View Post
    Most mech builders are using a set of 2.4GHz XBee modules for their wireless communication.
    Oh. Thanks. Where can I find useful information on using these? I have heard of them, but have no experience with them.

  8. #18
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    Re: Arena Networking/Robot Communication

    Quote Originally Posted by byi View Post
    Oh. Thanks. Where can I find useful information on using these? I have heard of them, but have no experience with them.
    A tutorial here: http://forums.trossenrobotics.com/tu...e-basics-3259/

    -Fergs

  9. #19
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    Re: Arena Networking/Robot Communication

    Thanks. So, if i use Xbee, the microcontroller sends serial data to one pin and receives it from another pin? its that simple?

  10. #20
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    Re: Arena Networking/Robot Communication

    Quote Originally Posted by byi View Post
    Thanks. So, if i use Xbee, the microcontroller sends serial data to one pin and receives it from another pin? its that simple?
    You'll want to use the microcontroller's UART (Universal Asynchronous receiver/transmitter), which indeed has a TX and RX line that can be connected to an Xbee.

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