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jcarmody

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Posts posted by jcarmody

  1. [...] Style: Did not use local variables, used producer consumer and display loop, was comparitively neater. But used many references in the

    consumer loop and property nodes in the display loop. Are these acceptable?

    I recall that a P-C architecture was more complicated than necessary for my exam and the practice problems. It might have led you into using references/property nodes unnecessarily.

    [...] Personally, I think that your consumer should not be interacting with controls at all. The producer should read values, and pass the data with the command to the consumer. Since you have a display loop, the consumer loop shouldn't have any terminals, references, locals or property nodes in it. For example, you have a subVI which uses a references to change the blinking property of the Pilot boolean.

  2. Cross-posted on NI here.

    I just witnessed a 4-wire resistance measurement across the barrel of a metalized connector made with a standard set of alligator clip-like probes.

    FC_2009102217348.jpg

    One operator makes this particular measurement with the clips only slightly opened, and the resistance exceeds the test limits. This triggered the Manufacturing Engineer to get involved and his habit is to make this measurement with the clips almost fully opened. The resistance, when doing it this way, is about 1/3 of the first operators method.

    I tried to imagine why this might occur, but I'm stumped. I thought about the length of the current paths through the material and how the corresponding change in distance would increase the resistance when the probes are closer together, but this doesn't explain the 3x factor. This would also imply that turning one clip 180 degrees should result in a change in the opposite direction, but this isn't observed. I'll keep guessing.

    Have you seen this? Can you explain it?

  3. I'm one of those people that won't open Word documents from people I don't know. As of this posting, however, I can see that (at least) two people don't have the same concerns. If you'd post the questions instead of the attachment...

    • Like 1
  4. Here's an absurd scenario:

    Me to LAVA: How do I do something?

    LAVA to me: Like this.

    Me to LAVA: Oh, thank you so much! That's just what I was looking for. :worshippy: That was fast; you folks are the best.

    .

    .

    .

    <some time later...>

    Me to myself: I can't use that code, because the author has a copyright... :nono:

  5. Here's an article that explains the difficulties, inherent in copyright laws, for even the most libertarian among us to give away our work.

    Well, then, why don’t you just “make it public domain,” some then, a bit unreflectively, retort. The problem is, there is no clear and good way to do this.If you use a Creative Commons license, you are actually employing the copyright the state grants you–you are putting conditions or limitations on what others may do with your works. Even if you use the least restrictive type, “Attribution,” you are requiring others to do something to avoid being liable for copyright infringement.
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