GBC Counter




GBC module which counts balls as they pass through. The module uses a mechanical approach to counting i.e. no electronic parts to count.
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Name GBC Counter
Designer djm
Designed 2017
Inventory 1297 parts
Theme Technic
Old Trafford


  • 8 months, 1 week ago tuga_bricks Level 7
    IiThis was a cool build this similar to another I build (had to do steps on that one) but uses tires with numbers....... 
    Still have to run it in a line to see how effective it is counting
    Thanks for sharing
  • 2 years, 4 months ago LTG Level 4
    Hello I have a problem with opening it in LDD. It downloaded as a mpd file so I renamed it to a lxf file and then imported it in LDD, it came up with this error 440 bricks were not placed correctly and have been removed from the model. Please help.
    • 2 years, 4 months ago djm Level 10 Designed this MOC
      The LDraw model is a multiple, non-flat MPD file. I believe (though I can't put my finger on the appropriate reference at the moment) that LDD can only import "flat" LPR files.

      Given that the model was designed using LDraw tools (specifically LDCAD), my suggestion would be to use LDCAD to examine the LDraw file.


      • 2 years, 4 months ago LTG Level 4
        Thanks for the help, I've opening it in Ldcad but I can't actually see the pieces its appearing as lots of red dots how do I see the parts? I'm new to cad.
        • 2 years, 4 months ago djm Level 10 Designed this MOC
          I suspect that would be because the LDraw parts are not in the expected directory. Try the following:
          1) in LDCad, open the menu item "Prefs/LDraw/Search (library) paths"
          2) in the dialog window that opens, there should be a list of directories in "Search order". The first one should be something like "C:\Users\Public\Documents\LDraw\".
          3) In Windows explorer, navigate to C:\Users\Public\Documents\LDraw\ Check whether there are sub-directories called "p" and "parts". If so, do they have any files in them.

          Reply to this comment and say what you see.


        • 2 years, 4 months ago djm Level 10 Designed this MOC
          There are two conceptual components to LDraw. The programs (e.g.  executables, DLLs) and the libraries. The programs are normally installed in something like "C:\Program Files\Ldraw\". The libraries are normally installed in "C:\Users\Public\Documents\LDraw\ ". From your screenshots, it appears that you have installed the library in another directory. In my experience, this can be problematic for some of the tools in the LDraw suite.

          How did you install LDraw e.g. using the All-in-one-Installer or by some other means.

        • 2 years, 4 months ago djm Level 10 Designed this MOC
          Alternatively, you may want to read
        • 2 years, 4 months ago djm Level 10 Designed this MOC
          Based on your screenshots, it looks like your LDraw installation is incomplete. LDCad uses the LDraw parts library so if your LDraw install is incomplete, LDCad is unlikely to function. You can try this link to see if it resolves your issues. If it doesn't, it would be more appropriate for you to take this issue to the LDraw forums (which will require you to register there).


  • 2 years, 4 months ago djm Level 10 Designed this MOC
    2017-09-25 Building Instructions were updated to correct one incorrect building step image. Link to Building Instructions points to updated instructions.
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Help Guide - BI File Types

This MOC also has a 3D digital file available (eg LDD, MPD, etc): 3D Model