• Video: What is a PID Controller?

    From Tim Wescott@21:1/5 to All on Wed May 4 16:48:13 2016
    XPost: comp.dsp, sci.electronics.design

    Just posted a video. It's my first real effort and, as videos go, rough
    as a cob -- but I think the information is solid.

    I have a 15-minute time limit -- trying to fit an informative video into
    that is kind of like explaining General Relativity with a book of haiku.

    https://www.youtube.com/watch?v=2elEXcv0AV8

    YouTube time limit
    complex subject, 15 minutes
    very hard.

    --

    Tim Wescott
    Wescott Design Services
    http://www.wescottdesign.com

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  • From Eric Jacobsen@21:1/5 to seemywebsite@myfooter.really on Wed May 4 21:58:22 2016
    XPost: comp.dsp, sci.electronics.design

    On Wed, 04 May 2016 16:48:13 -0500, Tim Wescott
    <seemywebsite@myfooter.really> wrote:

    Just posted a video. It's my first real effort and, as videos go, rough
    as a cob -- but I think the information is solid.

    I have a 15-minute time limit -- trying to fit an informative video into
    that is kind of like explaining General Relativity with a book of haiku.

    https://www.youtube.com/watch?v=2elEXcv0AV8

    YouTube time limit
    complex subject, 15 minutes
    very hard.

    --

    Tim Wescott
    Wescott Design Services
    http://www.wescottdesign.com

    At first glance it looks a lot better than the vids I've made!
    Kudos.

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  • From Les Cargill@21:1/5 to Tim Wescott on Wed May 4 18:30:24 2016
    XPost: comp.dsp, sci.electronics.design

    Tim Wescott wrote:
    Just posted a video. It's my first real effort and, as videos go, rough
    as a cob -- but I think the information is solid.

    I have a 15-minute time limit -- trying to fit an informative video into
    that is kind of like explaining General Relativity with a book of haiku.

    https://www.youtube.com/watch?v=2elEXcv0AV8

    YouTube time limit
    complex subject, 15 minutes
    very hard.



    Nicely done.

    --
    Les Cargill

    --- SoupGate-Win32 v1.05
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  • From Martin Riddle@21:1/5 to seemywebsite@myfooter.really on Wed May 4 19:43:26 2016
    XPost: comp.dsp, sci.electronics.design

    On Wed, 04 May 2016 16:48:13 -0500, Tim Wescott
    <seemywebsite@myfooter.really> wrote:

    Just posted a video. It's my first real effort and, as videos go, rough
    as a cob -- but I think the information is solid.

    I have a 15-minute time limit -- trying to fit an informative video into
    that is kind of like explaining General Relativity with a book of haiku.

    https://www.youtube.com/watch?v=2elEXcv0AV8

    YouTube time limit
    complex subject, 15 minutes
    very hard.

    Well done. Your well spoken, I heard just one heavy sigh before you
    add the I. 14min seemed to go by quickly.

    The demo is nice, maybe a Tach display and a angle display.

    And better lighting, maybe you can shrink your self into a PIP and
    just show the demo.


    Cheers

    --- SoupGate-Win32 v1.05
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  • From Tim Wescott@21:1/5 to Martin Riddle on Wed May 4 18:57:25 2016
    XPost: comp.dsp, sci.electronics.design

    On Wed, 04 May 2016 19:43:26 -0400, Martin Riddle wrote:

    On Wed, 04 May 2016 16:48:13 -0500, Tim Wescott <seemywebsite@myfooter.really> wrote:

    Just posted a video. It's my first real effort and, as videos go, rough
    as a cob -- but I think the information is solid.

    I have a 15-minute time limit -- trying to fit an informative video into >>that is kind of like explaining General Relativity with a book of haiku.

    https://www.youtube.com/watch?v=2elEXcv0AV8

    YouTube time limit complex subject, 15 minutes very hard.

    Well done. Your well spoken, I heard just one heavy sigh before you add
    the I. 14min seemed to go by quickly.

    The demo is nice, maybe a Tach display and a angle display.

    And better lighting, maybe you can shrink your self into a PIP and just
    show the demo.

    I've been fiddle-farting around with this for ages, starting about a year
    ago with "what would it take to make professional quality video". Not
    having infinite money, I didn't go that route. I finally managed to
    whittle my expectations down to something I could actually _do_.

    I am partially trying to sell myself here, but better lighting would
    certainly be a Good Thing -- there's some known cheap ways of doing
    these, which I'll probably employ next time.

    --

    Tim Wescott
    Wescott Design Services
    http://www.wescottdesign.com

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  • From Clifford Heath@21:1/5 to Tim Wescott on Thu May 5 09:07:58 2016
    XPost: comp.dsp, sci.electronics.design

    On 05/05/16 09:57, Tim Wescott wrote:
    On Wed, 04 May 2016 19:43:26 -0400, Martin Riddle wrote:
    And better lighting, maybe you can shrink your self into a PIP and just
    show the demo.
    I've been fiddle-farting around with this for ages, starting about a year
    ago with "what would it take to make professional quality video". Not
    having infinite money, I didn't go that route

    If you have (access to) a Mac, I can highly recommend "ScreenFlow".
    It can record multiple screens, multiple cameras and audio at the same
    time, and provides a really good post editor for mixing down the video,
    with slo-mo replays, transitions and many other effects, PIP, etc.

    All for $100. Excellent value, even just for the post facilities (i.e.
    even if you never make a recording).

    --- SoupGate-Win32 v1.05
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  • From Tim Wescott@21:1/5 to Clifford Heath on Wed May 4 19:52:57 2016
    XPost: comp.dsp, sci.electronics.design

    On Thu, 05 May 2016 09:07:58 +1000, Clifford Heath wrote:

    On 05/05/16 09:57, Tim Wescott wrote:
    On Wed, 04 May 2016 19:43:26 -0400, Martin Riddle wrote:
    And better lighting, maybe you can shrink your self into a PIP and
    just show the demo.
    I've been fiddle-farting around with this for ages, starting about a
    year ago with "what would it take to make professional quality video".
    Not having infinite money, I didn't go that route

    If you have (access to) a Mac, I can highly recommend "ScreenFlow".
    It can record multiple screens, multiple cameras and audio at the same
    time, and provides a really good post editor for mixing down the video,
    with slo-mo replays, transitions and many other effects, PIP, etc.

    All for $100. Excellent value, even just for the post facilities (i.e.
    even if you never make a recording).

    I'm using KdenLive for editing, and it's pretty good -- at least, its capabilities are well beyond mine. And at $0, its price is infinitely
    better.

    The muy-expensivo camera is my cell phone. It was realizing that I had something ON HAND that would take adequate video that really pushed me
    over the edge.

    As for simple recording and editing mistakes, the points that will be
    different next time are:

    1: I'm working off of (essentially) a bunch of slides, and you can see me looking at them as I talk. I certainly don't like the looks of it.

    2: There's a number of places where swear words, tongue-twists, and nose- scratching was edited out on-the-fly, causing jumps in the video. Again,
    they detract from the video.

    Instead of trying to do the whole video in one take (and failing), I'm
    going to study _one_ slide, _hide it_, turn the camera on, do _that one
    slide's worth_ while _looking at the camera_, turn the camera off, repeat
    until _that slide_ is good enough, turn to the next slide, and repeat
    until done. Then I'll edit them together with suitable transitions.

    This presentation had ten slides, so if I do 90 seconds and flub it, I
    can just stop the camera, take a few deep breaths, and try again.

    3: The lighting could be improved. Just a few lamps off screen would
    have made it better, but I was in "dammit, just get 'er done" mode --
    which is why it got done.

    Not really on the "immediate" list, but room for incremental improvements:

    4: The filming spot could be better. That's my very own desk and
    workbench, just cleaned up for filming. I'll probably stay here for now, possibly with incremental improvements, but if I should happen to get a
    really strong response I'll make a better spot.

    5: I'm doing this entirely on my own. If I can get a camera-wrangler and general coach in here while I'm filming that would help. Fortunately, I
    have under-employed family members.

    6: Editing and closed-captioning, ditto. Unfortunately my general
    attitude toward new things is "dive in and keep screwing up until you get
    it right", while my wife and kids' attitude is "no, won't try unless I'll
    get it perfect". Maybe I can get one or more of them to take classes...

    --

    Tim Wescott
    Wescott Design Services
    http://www.wescottdesign.com

    --- SoupGate-Win32 v1.05
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  • From Tim Wescott@21:1/5 to Tim Wescott on Wed May 4 20:08:52 2016
    XPost: comp.dsp, sci.electronics.design

    On Wed, 04 May 2016 19:52:57 -0500, Tim Wescott wrote:

    On Thu, 05 May 2016 09:07:58 +1000, Clifford Heath wrote:

    On 05/05/16 09:57, Tim Wescott wrote:
    On Wed, 04 May 2016 19:43:26 -0400, Martin Riddle wrote:
    And better lighting, maybe you can shrink your self into a PIP and
    just show the demo.
    I've been fiddle-farting around with this for ages, starting about a
    year ago with "what would it take to make professional quality video".
    Not having infinite money, I didn't go that route

    If you have (access to) a Mac, I can highly recommend "ScreenFlow".
    It can record multiple screens, multiple cameras and audio at the same
    time, and provides a really good post editor for mixing down the video,
    with slo-mo replays, transitions and many other effects, PIP, etc.

    All for $100. Excellent value, even just for the post facilities (i.e.
    even if you never make a recording).

    I'm using KdenLive for editing, and it's pretty good -- at least, its capabilities are well beyond mine. And at $0, its price is infinitely better.

    The muy-expensivo camera is my cell phone. It was realizing that I had something ON HAND that would take adequate video that really pushed me
    over the edge.

    As for simple recording and editing mistakes, the points that will be different next time are:

    1: I'm working off of (essentially) a bunch of slides, and you can see
    me looking at them as I talk. I certainly don't like the looks of it.

    2: There's a number of places where swear words, tongue-twists, and
    nose- scratching was edited out on-the-fly, causing jumps in the video. Again, they detract from the video.

    Instead of trying to do the whole video in one take (and failing), I'm
    going to study _one_ slide, _hide it_, turn the camera on, do _that one slide's worth_ while _looking at the camera_, turn the camera off,
    repeat until _that slide_ is good enough, turn to the next slide, and
    repeat until done. Then I'll edit them together with suitable
    transitions.

    This presentation had ten slides, so if I do 90 seconds and flub it, I
    can just stop the camera, take a few deep breaths, and try again.

    3: The lighting could be improved. Just a few lamps off screen would
    have made it better, but I was in "dammit, just get 'er done" mode --
    which is why it got done.

    Not really on the "immediate" list, but room for incremental
    improvements:

    4: The filming spot could be better. That's my very own desk and
    workbench, just cleaned up for filming. I'll probably stay here for
    now, possibly with incremental improvements, but if I should happen to
    get a really strong response I'll make a better spot.

    5: I'm doing this entirely on my own. If I can get a camera-wrangler
    and general coach in here while I'm filming that would help.
    Fortunately, I have under-employed family members.

    6: Editing and closed-captioning, ditto. Unfortunately my general
    attitude toward new things is "dive in and keep screwing up until you
    get it right", while my wife and kids' attitude is "no, won't try unless
    I'll get it perfect". Maybe I can get one or more of them to take
    classes...

    Oh, and a quieter @#$% chair.

    --

    Tim Wescott
    Wescott Design Services
    http://www.wescottdesign.com

    --- SoupGate-Win32 v1.05
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  • From Randy Yates@21:1/5 to Tim Wescott on Wed May 4 23:44:24 2016
    XPost: comp.dsp, sci.electronics.design

    Tim Wescott <seemywebsite@myfooter.really> writes:

    Just posted a video. It's my first real effort and, as videos go, rough
    as a cob -- but I think the information is solid.

    I have a 15-minute time limit -- trying to fit an informative video into
    that is kind of like explaining General Relativity with a book of haiku.

    https://www.youtube.com/watch?v=2elEXcv0AV8

    You're just as bald as I am!

    (Oh, and nice video! :)
    --
    Randy Yates, DSP/Embedded Firmware Developer
    Digital Signal Labs
    http://www.digitalsignallabs.com

    --- SoupGate-Win32 v1.05
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  • From Jeff Liebermann@21:1/5 to seemywebsite@myfooter.really on Wed May 4 23:21:08 2016
    XPost: comp.dsp, sci.electronics.design

    On Wed, 04 May 2016 16:48:13 -0500, Tim Wescott
    <seemywebsite@myfooter.really> wrote:

    https://www.youtube.com/watch?v=2elEXcv0AV8

    Nicely done.

    May I suggest that future videos be done in something other than
    Flash, such as HTML5:
    <https://www.wired.com/2015/07/adobe-flash-player-die/> <http://youtube-eng.blogspot.jp/2015/01/youtube-now-defaults-to-html5_27.html> <https://www.youtube.com/html5>
    For now, there are some Flash to HTML5 converters available. I have
    no idea which is best or how well they might work: <https://www.google.com/#q=flash+to+html5+converter>

    Suggestion: Take a clue from Dave Jones and fill the background with
    an impressive collection of test equipment: <https://www.youtube.com/user/EEVblog>
    That adds credibility to your video. (Perception is everything).

    --
    Jeff Liebermann jeffl@cruzio.com
    150 Felker St #D http://www.LearnByDestroying.com
    Santa Cruz CA 95060 http://802.11junk.com
    Skype: JeffLiebermann AE6KS 831-336-2558

    --- SoupGate-Win32 v1.05
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  • From Tim Wescott@21:1/5 to Jeff Liebermann on Thu May 5 01:49:17 2016
    XPost: comp.dsp, sci.electronics.design

    On Wed, 04 May 2016 23:21:08 -0700, Jeff Liebermann wrote:

    On Wed, 04 May 2016 16:48:13 -0500, Tim Wescott <seemywebsite@myfooter.really> wrote:

    https://www.youtube.com/watch?v=2elEXcv0AV8

    Nicely done.

    May I suggest that future videos be done in something other than Flash,
    such as HTML5:
    <https://www.wired.com/2015/07/adobe-flash-player-die/> <http://youtube-eng.blogspot.jp/2015/01/youtube-now-defaults-to-
    html5_27.html>
    <https://www.youtube.com/html5>
    For now, there are some Flash to HTML5 converters available. I have no
    idea which is best or how well they might work: <https://www.google.com/#q=flash+to+html5+converter>

    YouTube takes my mp4 files and does what it wills with them. I know it
    reduces the resolution for most people -- at least I assume that you're
    not seeing all 1920 x 1080 that I uploaded. Maybe there's an option for
    one of us to ask for flash vs. HTML5 -- I'll see if I can figure out if
    that's my option.

    Suggestion: Take a clue from Dave Jones and fill the background with an impressive collection of test equipment: <https://www.youtube.com/user/EEVblog>
    That adds credibility to your video. (Perception is everything).

    I have a pretty sparse set of test equipment, actually. A nice Agilent mixed-signal scope and a Rigol spectrum analyzer are the highlights; it
    goes downhill from there all the way to a 1950's-era Heathkit RF signal generator complete with crinkle-coat paint.

    Besides, the most important test equipment in the room is my brain -- the
    rest is just for convenience.

    One of the videos I plan will show the test equipment that's built into
    nearly any closed-loop control project I build: there's a swept-sine
    analyzer in that software that lets me analyze both the arm position loop
    and the motor speed loop. I can take the resulting data and use it to
    tune the system.

    --
    Tim Wescott
    Control systems, embedded software and circuit design
    I'm looking for work! See my website if you're interested http://www.wescottdesign.com

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  • From Bob Penoyer@21:1/5 to seemywebsite@myfooter.really on Thu May 5 10:07:03 2016
    XPost: comp.dsp, sci.electronics.design

    On Wed, 04 May 2016 16:48:13 -0500, Tim Wescott
    <seemywebsite@myfooter.really> wrote:

    Just posted a video. It's my first real effort and, as videos go, rough
    as a cob -- but I think the information is solid.

    I have a 15-minute time limit -- trying to fit an informative video into
    that is kind of like explaining General Relativity with a book of haiku.

    https://www.youtube.com/watch?v=2elEXcv0AV8

    YouTube time limit
    complex subject, 15 minutes
    very hard.

    Well done! The use of the fan for illustration was a great idea.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From OG@21:1/5 to All on Thu May 5 11:01:43 2016
    XPost: comp.dsp, sci.electronics.design

    Really good if you somewhat understand it.

    But ...
    1) beginning: explain the hardware.
    Motor with reversible fan
    What sensor(s) in base? Position etc
    What is the static balance point and how does that affect all.

    2) Show what overshoot is. e.g. manually move the arm back indicating
    that is the overshoot.

    A little light on integration and differentiation explanation. A little
    more would be extremely helpful. These are important concepts as you
    well know.

    I give you a 98. (lol)


    --- news://freenews.netfront.net/ - complaints: news@netfront.net ---

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  • From Jeff Liebermann@21:1/5 to All on Thu May 5 00:58:35 2016
    XPost: comp.dsp, sci.electronics.design

    On Thu, 05 May 2016 01:49:17 -0500, Tim Wescott <tim@seemywebsite.com>
    wrote:

    On Wed, 04 May 2016 23:21:08 -0700, Jeff Liebermann wrote:

    On Wed, 04 May 2016 16:48:13 -0500, Tim Wescott
    <seemywebsite@myfooter.really> wrote:

    https://www.youtube.com/watch?v=2elEXcv0AV8

    Nicely done.

    May I suggest that future videos be done in something other than Flash,
    such as HTML5:
    <https://www.wired.com/2015/07/adobe-flash-player-die/>
    <http://youtube-eng.blogspot.jp/2015/01/youtube-now-defaults-to- >html5_27.html>
    <https://www.youtube.com/html5>
    For now, there are some Flash to HTML5 converters available. I have no
    idea which is best or how well they might work:
    <https://www.google.com/#q=flash+to+html5+converter>

    YouTube takes my mp4 files and does what it wills with them. I know it >reduces the resolution for most people -- at least I assume that you're
    not seeing all 1920 x 1080 that I uploaded. Maybe there's an option for
    one of us to ask for flash vs. HTML5 -- I'll see if I can figure out if >that's my option.

    YouTube adjusts the video to correspond to what the internet
    connection and computah can handle. I'm bandwidth limited by a
    1.5Mbit/sec DSL connection which shows your video as 360p. I'll try
    it again tomorrow on my office cable modem connection, which can do
    25mbits/sec and should show at least 720p. However, even at the
    lowest resolution of 144p, the video looks acceptable but blurry on my
    24" 1680x1050 monitor.

    I don't know why it ended up as Flash instead of HTML5. YouTube
    recommends uploading in MP4 (H.264) which should have been transcoded
    to HTML5:
    <https://support.google.com/youtube/answer/1722171>
    Check the list of recommended settings and see if there's anything
    different.

    Suggestion: Take a clue from Dave Jones and fill the background with an
    impressive collection of test equipment:
    <https://www.youtube.com/user/EEVblog>
    That adds credibility to your video. (Perception is everything).

    I have a pretty sparse set of test equipment, actually. A nice Agilent >mixed-signal scope and a Rigol spectrum analyzer are the highlights; it
    goes downhill from there all the way to a 1950's-era Heathkit RF signal >generator complete with crinkle-coat paint.

    Vintage doesn't matter. It's just a collection of props that add
    authenticity to your presentation and makes it appear that you
    actually work with the things that you are discussing. It's much like
    a mad scientist movie always features a sparking Jacobs ladder, a
    sci-fi space program has a wall full of flashing lights and an
    oscilloscope displaying a Lissajous pattern, or until fairly recently
    TV news programs had the sound of a teletype machines clattering in
    the background. Viewers expect electronic presentations to have a
    wall of electronics. Don't disappoint them.

    Besides, the most important test equipment in the room is my brain -- the >rest is just for convenience.

    True, especially since your presentation is almost an infomercial
    advertising your services.

    Ever notice that law offices always feature a wall full of legal books
    behind the photo of the attorney? <https://www.google.com/search?q=law+office&tbm=isch>
    The books are for show. Today, attorneys do their reading online with dedicated programs, LexisNexis, Shepard's, Westlaw, Fastcase, etc. The
    books are purely for show. If you look at them carefully, many are
    probably seriously out of date. Same with test equipment. If you
    look carefully at the equipment behind Dave Jones, you'll notice that
    there are few test leads plugged into the equipment, none of it is
    powered on, and there's little in the way of the usual boxes,
    attenuators, isolators, adapters, clip leads, and related trivia
    necessary to make the test equipment do something useful.

    Yet another suggestion. Try not to put yourself between what you're
    presenting and the audience. Sitting to one side, as in your video,
    is acceptable. However, if you're showing something larger or more complicated, you may want to put it on a table between you and the
    camera.

    One more and I'll quit (It's 1am here). If you look at the various
    Dave Jones videos:
    <https://www.youtube.com/user/EEVblog>
    You might notice that the camera is well above Dave's head and looking
    down at Dave and everything else. That's intentional. There's lots
    of psychology involved, but basically it gives the viewer a slight
    feeling of superiority, which generally a better view of what's on the
    table. Your video puts the viewer slightly above your eye level,
    which makes them an equal to you. If you're trying to present
    something to other engineers who are competent in their areas of
    expertise, that's perfect. However, if you're trying to attract a
    general audience, who knows nothing about control systems, I suggest
    that you make them feel a bit superior by positioning them above eye
    level. If you want to intimidate the viewer, set yourself up as the
    leading authority on the topic, and probably chase your audience away,
    put the camera below your eye level.

    One of the videos I plan will show the test equipment that's built into >nearly any closed-loop control project I build: there's a swept-sine
    analyzer in that software that lets me analyze both the arm position loop
    and the motor speed loop. I can take the resulting data and use it to
    tune the system.

    I know next to nothing about PID controllers and would be very
    interested in seeing how it's really done. You mentioned cruise
    control. Practical examples are what interest me.

    --
    Jeff Liebermann jeffl@cruzio.com
    150 Felker St #D http://www.LearnByDestroying.com
    Santa Cruz CA 95060 http://802.11junk.com
    Skype: JeffLiebermann AE6KS 831-336-2558

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  • From Baron@21:1/5 to All on Thu May 5 20:55:24 2016
    XPost: comp.dsp, sci.electronics.design

    Tim Wescott prodded the keyboard with:

    Just posted a video. It's my first real effort and, as videos go,
    rough as a cob -- but I think the information is solid.

    I have a 15-minute time limit -- trying to fit an informative video
    into that is kind of like explaining General Relativity with a book
    of haiku.

    https://www.youtube.com/watch?v=2elEXcv0AV8

    YouTube time limit
    complex subject, 15 minutes
    very hard.


    Thank Tim,
    Just watched the video. Reminds me of Uni. :-)
    --
    Best Regards:
    Baron.

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  • From Eric Jacobsen@21:1/5 to seemywebsite@myfooter.really on Thu May 5 20:37:25 2016
    XPost: comp.dsp, sci.electronics.design

    After finally watching the whole thing, it's great! I think you
    already captured appropriate changes to make it better, so nothing to
    add here. It's always good to see somebody provide an intuitive
    explanation for things instead of focusing on the math (which is also important, but the math usually gets explained to death).


    On Wed, 04 May 2016 16:48:13 -0500, Tim Wescott
    <seemywebsite@myfooter.really> wrote:

    Just posted a video. It's my first real effort and, as videos go, rough
    as a cob -- but I think the information is solid.

    I have a 15-minute time limit -- trying to fit an informative video into
    that is kind of like explaining General Relativity with a book of haiku.

    https://www.youtube.com/watch?v=2elEXcv0AV8

    YouTube time limit
    complex subject, 15 minutes
    very hard.

    --

    Tim Wescott
    Wescott Design Services
    http://www.wescottdesign.com

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From piglet@21:1/5 to Tim Wescott on Fri May 6 11:02:53 2016
    XPost: comp.dsp, sci.electronics.design

    On 04/05/2016 22:48, Tim Wescott wrote:
    Just posted a video. It's my first real effort and, as videos go, rough
    as a cob -- but I think the information is solid.

    I have a 15-minute time limit -- trying to fit an informative video into
    that is kind of like explaining General Relativity with a book of haiku.

    https://www.youtube.com/watch?v=2elEXcv0AV8

    YouTube time limit
    complex subject, 15 minutes
    very hard.


    Thank you Tim, really nice to hear the fan working harder/softer - an
    inspired choice of actuator!

    Good clear demonstration, I now can't wait to see a demo of the effects
    of too much D or too much I and not enough D / I etc and then an
    introduction on how to tune these or even explain how self-tuning works.

    piglet

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  • From Jeff Liebermann@21:1/5 to All on Thu May 5 18:14:46 2016
    XPost: comp.dsp, sci.electronics.design

    On Thu, 05 May 2016 00:58:35 -0700, Jeff Liebermann <jeffl@cruzio.com>
    wrote:

    https://www.youtube.com/watch?v=2elEXcv0AV8

    YouTube adjusts the video to correspond to what the internet
    connection and computah can handle. I'm bandwidth limited by a
    1.5Mbit/sec DSL connection which shows your video as 360p. I'll try
    it again tomorrow on my office cable modem connection, which can do >25mbits/sec and should show at least 720p.

    Yet another another day in computah hell. I run Firefox 46.0.1 on
    Windoze XP in my palatial office at cable modem speeds and still get
    Flash as 360p. I would have expected higher resolution and HTML5.
    However, when I switch to Chrome Version 49.0.2623.112m (last version
    for XP), your video auto plays in HTML5 at 480p. I can also force it
    to 720p and 1080p and it plays without buffering.

    I also tried both the Firefox and Chrome browsers on Win 7 and Win 10.
    Here's the table of results for what appeared as the default player
    and screen resolution:

    Firefox Chrome
    Win XP Flash 360p HTML5 480p
    Win 7 HTML5 360p HTML5 480p
    Win 10 HTML5 360p HTML5 480p

    So, in Chrome, everything is working normally and correctly, but in
    Firefox, I have a problem only on my XP machine. Oddly, both Chrome
    and Firefox on XP show that HTML5 is supported and is the default: <https://www.youtube.com/html5>
    I still don't know why my Firefox default to Flash, but I think you
    can safely ignore this oddity as it seems to be a problem with my XP
    machine.


    --
    Jeff Liebermann jeffl@cruzio.com
    150 Felker St #D http://www.LearnByDestroying.com
    Santa Cruz CA 95060 http://802.11junk.com
    Skype: JeffLiebermann AE6KS 831-336-2558

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  • From Randy Yates@21:1/5 to piglet on Fri May 6 12:21:22 2016
    XPost: comp.dsp, sci.electronics.design

    piglet <erichpwagner@hotmail.com> writes:

    On 04/05/2016 22:48, Tim Wescott wrote:
    Just posted a video. It's my first real effort and, as videos go, rough
    as a cob -- but I think the information is solid.

    I have a 15-minute time limit -- trying to fit an informative video into
    that is kind of like explaining General Relativity with a book of haiku.

    https://www.youtube.com/watch?v=2elEXcv0AV8

    YouTube time limit
    complex subject, 15 minutes
    very hard.


    Thank you Tim, really nice to hear the fan working harder/softer - an inspired choice of actuator!

    Good clear demonstration, I now can't wait to see a demo of the
    effects of too much D or too much I and not enough D / I etc and then
    an introduction on how to tune these or even explain how self-tuning
    works.

    Yes! I had the same questions.

    piglet

    --Eeyore

    --
    Randy Yates, DSP/Embedded Firmware Developer
    Digital Signal Labs
    http://www.digitalsignallabs.com

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  • From Tim Wescott@21:1/5 to piglet on Fri May 6 12:52:12 2016
    XPost: comp.dsp, sci.electronics.design

    On Fri, 06 May 2016 11:02:53 +0100, piglet wrote:

    On 04/05/2016 22:48, Tim Wescott wrote:
    Just posted a video. It's my first real effort and, as videos go,
    rough as a cob -- but I think the information is solid.

    I have a 15-minute time limit -- trying to fit an informative video
    into that is kind of like explaining General Relativity with a book of
    haiku.

    https://www.youtube.com/watch?v=2elEXcv0AV8

    YouTube time limit complex subject, 15 minutes very hard.


    Thank you Tim, really nice to hear the fan working harder/softer - an inspired choice of actuator!

    Good clear demonstration, I now can't wait to see a demo of the effects
    of too much D or too much I and not enough D / I etc and then an
    introduction on how to tune these or even explain how self-tuning works.

    I'm not sure if I'll do self-tuning, but yes, the other two need to go
    into a video -- or two, to fit into YouTube's time limits.

    --

    Tim Wescott
    Wescott Design Services
    http://www.wescottdesign.com

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  • From ChesterW@21:1/5 to Tim Wescott on Fri May 6 20:51:31 2016
    XPost: comp.dsp, sci.electronics.design

    On 5/4/16 4:48 PM, Tim Wescott wrote:
    Just posted a video. It's my first real effort and, as videos go, rough
    as a cob -- but I think the information is solid.

    I have a 15-minute time limit -- trying to fit an informative video into
    that is kind of like explaining General Relativity with a book of haiku.

    https://www.youtube.com/watch?v=2elEXcv0AV8

    YouTube time limit
    complex subject, 15 minutes
    very hard.


    Hi Tim,

    Nice video, thanks for posting. I thought the controlled system was the
    neatest part. My suggestion is that you lead off with showing what the
    system can do - command a few angles, introduce a few upsets, maybe in
    rapid succession, and watch the system respond. Then the audience will
    be receptive to listen to how to achieve those results. I'm not sure how
    you do that with the time limit. It's a challenge.

    --

    Best Regards,

    ChesterW
    +++
    Dr Chester Wildey
    Founder MRRA Inc.
    Electronic and Optoelectronic Instruments
    MRI Motion, fNIRS Brain Scanners, Counterfeit and Covert Marker Detection
    Fort Worth, Texas, USA
    www.mrrainc.com
    wildey at mrrainc dot com

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