| General > General Technical Chat |
| Software guys, please, no. |
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| fourfathom:
--- Quote from: coppice on September 21, 2022, 07:34:27 pm ---Where do people get the idea there is current limiting. Are they confusing this with variable drive strenth? --- End quote --- Well, it is current limiting, of a sort. This doesn't make it right, or safe for the IO pin. |
| coppice:
--- Quote from: fourfathom on September 21, 2022, 07:37:22 pm --- --- Quote from: coppice on September 21, 2022, 07:34:27 pm ---Where do people get the idea there is current limiting. Are they confusing this with variable drive strenth? --- End quote --- Well, it is current limiting, of a sort. This doesn't make it right, or safe for the IO pin. --- End quote --- Any wire is a current limiter of a sort, unless its superconducting. Some people are making comments like there is true current control on these pins, rather than a selection between vague and temperature dependant impedances. |
| fourfathom:
--- Quote from: coppice on September 21, 2022, 07:43:46 pm --- --- Quote from: fourfathom on September 21, 2022, 07:37:22 pm --- --- Quote from: coppice on September 21, 2022, 07:34:27 pm ---Where do people get the idea there is current limiting. Are they confusing this with variable drive strenth? --- End quote --- Well, it is current limiting, of a sort. This doesn't make it right, or safe for the IO pin. --- End quote --- Any wire is a current limiter of a sort, unless its superconducting. Some people are making comments like there is true current control on these pins, rather than a selection between vague and temperature dependant impedances. --- End quote --- Of course, and that was my point. The current is limited by the Rds (etc) of the output driver. Not a great current limiter, but not a piece of copper wire. Not worth arguing about -- he should have used a resistor. |
| SiliconWizard:
Uh yeah. You could discuss current limits and wire resistance to no end, just because, but it appears completely pointless here IMHO. What's wrong with what this guy is conveying here is that 1/ it's just not how you should teach beginners, if that was at all the intended purpose - sane basics are better than ugly hacks especially since it would have not taken more than a few seconds to explain it and add a fricking resistor on a breadboard, and 2/ with this kind of "I dare you to convince me otherwise" attitude, it just sounds like someone full of themselves, laking minimum humility on a topic they don't fully grasp, and it also sounds like the typical "software guy" (the stereotype) whose mantra is "but it works on my own machine". So for those 2 reasons, even if that was a detail in the video, it's just bullshit conveying the wrong ideas. And as someone else mentioned, it's not about the guy who I don't know, it's all about what he *says*. Now for the last thought, as he is apparently a seasoned Youtuber with fancy equipment, let's not ignore the fact that he possibly said that *exactly* knowing that it would trigger a lot of reactions, just to get the buzz and maximum number of views. I would seriously consider this here. That may all have been right on purpose just to generate more traffic. And it appears to work. Yes, Youtube is a sad game but it's just a business. |
| tggzzz:
--- Quote from: SiliconWizard on September 21, 2022, 08:11:09 pm ---Uh yeah. You could discuss current limits and wire resistance to no end, just because, but it appears completely pointless here IMHO. What's wrong with what this guy is conveying here is that 1/ it's just not how you should teach beginners, if that was at all the intended purpose - sane basics are better than ugly hacks especially since it would have not taken more than a few seconds to explain it and add a fricking resistor on a breadboard, and 2/ with this kind of "I dare you to convince me otherwise" attitude, it just sounds like someone full of themselves, laking minimum humility on a topic they don't fully grasp, and it also sounds like the typical "software guy" (the stereotype) whose mantra is "but it works on my own machine". So for those 2 reasons, even if that was a detail in the video, it's just bullshit conveying the wrong ideas. And as someone else mentioned, it's not about the guy who I don't know, it's all about what he *says*. Now for the last thought, as he is apparently a seasoned Youtuber with fancy equipment, let's not ignore the fact that he possibly said that *exactly* knowing that it would trigger a lot of reactions, just to get the buzz and maximum number of views. I would seriously consider this here. That may all have been right on purpose just to generate more traffic. And it appears to work. Yes, Youtube is a sad game but it's just a business. --- End quote --- Precisely, on all points :( Clickbait. It is why it is not worth my time to watch yootoob vids unless I know in advance the video gives me visual information that I can't get by other means. The "convince me otherwise" is a classic charlatan ploy. No, if You make extraordinary claims, it is not up to Me to disprove them. Rather, it is up to You to prove the claims. That's the way science and engineering works. (Political, religious and disreputable shills are the opposite). |
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