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  • DAP 1522 power

    The network access point DAP-1522 takes in 5V power according to itself (back, next to the power plug), but on the Robot Power Distribution Diagram, it shows that it is power by 12V (on the power distribution board) through a "converter". I'm a little bit confused - if we want to directly connect the power cord to the power distribution board, should we use the 5V side or 12V side?

  • #2
    Re: DAP 1522 power

    You should not connect the DAP 1522 power directly to any connection on the Power Distribution Board. Per [R42-B] you must use the 12V-5V convertor and you must connect it to the regulated 12V supply located at the end of the Power Distribution Board.

    This method of connection is required because the 12V and 24V connections on the end of the Power Distribution Board (for the Robot Radio and cRIo respectively) are both designed to maintain their output despite significant sags in the battery voltage.
    FIRST®
    FRC Robotics Engineer

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    • #3
      Re: DAP 1522 power

      Thank you very much!
      I have another question about wireless network setup - our team number is 462, should we name set the "Wireless Network Name" to 462, or 0462, or it does not matter?
      Last year we had communication problem between driver station and robot on competition field, while it works fine off field (tethered of wireless using access point mode), and we never found out the reason. What is the best way to test the wireless communication off field, so we can mimic the situation on competition field before we go there?

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      • #4
        Re: DAP 1522 power

        The network name for practicing at your facility is not particularly important. Any name should work just fine as long as it is a name not already in use in your build space.

        The closest you could (easily) get to the field setup would be to connect your Driver Station computer, via ethernet, to a 5GHz router that is set to a static IP of 10.xx.yy.4 broadcasting a network with the SSID set to your team number (no leading zeroes) with WPA enabled (use whatever key you like). You would then set up the DAP-1522 to connect to this network by putting it in bridge mode and entering the SSID and WPA key that match the router. Then use the Practice Mode on the Driver Station software to simulate a full match.

        If you do find yourself having connection issues at any of your competitions this year please talk to your FTA (FIRST Technical Advisor), FTAA (FTA Assistant) or CSA (Control System Advisor), they are there to help and have all been trained on things to look for when debugging these types of issues.
        Last edited by Kevin O'Connor; 02-23-2012, 10:07 PM.
        FIRST®
        FRC Robotics Engineer

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        • #5
          Re: DAP 1522 power

          Originally posted by Kevin O'Connor View Post
          The closest you could (easily) get to the field setup would be to connect your Driver Station computer, via ethernet, to a 5GHz router that is set to a static IP of 10.xx.yy.2 broadcasting a network with the SSID set to your team number (no leading zeroes) with WPA enabled (use whatever key you like). You would then set up the DAP-1522 to connect to this network by putting it in bridge mode and entering the SSID and WPA key that match the router. Then use the Practice Mode on the Driver Station software to simulate a full match.
          Is there a typo in the router IP? It would conflict with the cRIO. In 2009, the instructions were for the router to be 10.xx.yy.4
          Team 330 beta tester

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          • #6
            Re: DAP 1522 power

            Originally posted by jross View Post
            Is there a typo in the router IP? It would conflict with the cRIO. In 2009, the instructions were for the router to be 10.xx.yy.4
            Yes the router IP was a typo, good catch. The router IP should be .4 not .2. I have edited my previous post to reflect this.
            FIRST®
            FRC Robotics Engineer

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