Christopher Lum
Christopher Lum
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Default Arguments in Matlab Functions (varargin and nargin)
In this video we show how to implement default arguments in custom Matlab functions by using ‘nargin’ and ‘varargin’.
Topics and timestamps:
0:00 - Function Version A
1:34 - Function Version B (more inputs)
6:10 - Function Version C (varargin)
Lecture notes and code can be downloaded from github.com/clum/CZcams/tree/main/Matlab27
All Matlab/Simulink videos in a single playlist (czcams.com/play/PLxdnSsBqCrrEU0dLSrTcl0-w9cVYKMTaF.html)
#Matlab #Simulink
You can support this channel via Patreon at www.patreon.com/christopherwlum or by clicking on the ‘Thanks’ button underneath the video. Thank you for your help!
zhlédnutí: 384

Video

Disassemble the Headset and Top Tube on an Electric Scooter (GoTrax Eclipse)
zhlédnutí 261Před 21 dnem
In this video we show how to remove the top tube on an electric scooter. While we use a GoTrax Eclipse to demonstrate the process, this procedure should be applicable to a wide variety of scooters. All electric scooter videos in a single playlist (czcams.com/video/fJMZkE6UxiI/video.html) #eScooter, #electricVehicles You can support this channel via Patreon at www.patreon.com/christopherwlum or ...
Commenting Code in Matlab and Simulink (Ways You Can Use ‘%’)
zhlédnutí 512Před měsícem
In this video we show many different ways to comment code/functionality in Matlab and Simulink. Topics and timestamps: 0:25 - Simple comment 0:44 - Wrapping comments 3:21 - Spell checking in comments 4:30 - Ellipses 11:27 - Comment blocks 15:25 - Sections 19:56 - Comments for function help 22:03 - Simulink comment out 25:32 - Simulink comment through 28:44 - Summary Lecture notes and code can b...
Fuel Leaking from Motorcycle - Solved!
zhlédnutí 269Před měsícem
I recently took my motorcycle out of storage and when I turned the fuel on, gas started leaking out of the bottom of the bike. It turned out that the problem was a stuck float in the carburetor. To fix this, simply remove the carburetor from the bike, remove the float bowl, and clean any debris from the hinge mechanism that may be obstructing the movement of the float. Topics and timestamps: 0:...
Replace the Line on a DeWalt String Trimmer
zhlédnutí 2,5KPřed měsícem
In this video we show how to replace the string in a DeWalt string trimmer. Topics and timestamps: 0:00 - Introduction 0:35 - Measuring appropriate amount of line 1:55 - Removing spool from trimmer 3:14 - Winding the line onto the spool 7:16 - Putting the spool back onto the trimmer All household DIY videos in a single playlist (czcams.com/play/PLxdnSsBqCrrEt05uhC6NenK_vAOawMuFt.html) #DIY All ...
REI Down Time 25 Sleeping Bag
zhlédnutí 467Před měsícem
In this video we review the REI Down Time 25 Sleeping Bag. This is a women’s version that I got for my daughters and we got two matching bags. These can be combined to create a mega-bag which is great for extra warmth on cold campouts. Topics and timestamps: 0:00 - Introduction All Reviews and Unboxing videos in a single playlist (czcams.com/play/PLxdnSsBqCrrFH4Q_7kscnXy0UkUL4lNTG.html) #Unboxi...
AA516/AE512 Week10
zhlédnutí 498Před měsícem
This is the lecture schedule and homework for week10 of AA516 and AE512. All Flight Mechanics videos in a single playlist (czcams.com/play/PLxdnSsBqCrrEx3A6W94sQGClk6Q4YCg-h.html) #FlightMechanics You can support this channel via Patreon at www.patreon.com/christopherwlum or by clicking on the ‘Thanks’ button underneath the video. Thank you for your help!
AA516/AE512 Week09
zhlédnutí 409Před 2 měsíci
This is the lecture schedule and homework for week09 of AA516 and AE512. All Flight Mechanics videos in a single playlist (czcams.com/play/PLxdnSsBqCrrEx3A6W94sQGClk6Q4YCg-h.html) #FlightMechanics You can support this channel via Patreon at www.patreon.com/christopherwlum or by clicking on the ‘Thanks’ button underneath the video. Thank you for your help!
AA516/AE512 Week08
zhlédnutí 380Před 2 měsíci
This is the lecture schedule and homework for week08 of AA516 and AE512. All Flight Mechanics videos in a single playlist (czcams.com/play/PLxdnSsBqCrrEx3A6W94sQGClk6Q4YCg-h.html) #FlightMechanics You can support this channel via Patreon at www.patreon.com/christopherwlum or by clicking on the ‘Thanks’ button underneath the video. Thank you for your help!
AA516/AE512 Week07
zhlédnutí 509Před 2 měsíci
This is the lecture schedule and homework for week07 of AA516 and AE512. All Flight Mechanics videos in a single playlist (czcams.com/play/PLxdnSsBqCrrEx3A6W94sQGClk6Q4YCg-h.html) #FlightMechanics You can support this channel via Patreon at www.patreon.com/christopherwlum or by clicking on the ‘Thanks’ button underneath the video. Thank you for your help!
MathWorks Free Stuff
zhlédnutí 397Před 2 měsíci
Over the years I’ve accumulated a fair amount of free MathWorks promotional items and I thought it would be fun to share some of these with you. In particular, some of these items are even signed by the king of CZcams controls engineering educational videos, Brian Douglas. All Matlab/Simulink videos in a single playlist (czcams.com/play/PLxdnSsBqCrrEU0dLSrTcl0-w9cVYKMTaF.html) #Matlab #Simulink...
AA516/AE512 Week06
zhlédnutí 553Před 2 měsíci
This is the lecture schedule and homework for week06 of AA512 and AE512. All Flight Mechanics videos in a single playlist (czcams.com/play/PLxdnSsBqCrrEx3A6W94sQGClk6Q4YCg-h.html) #FlightMechanics You can support this channel via Patreon at www.patreon.com/christopherwlum or by clicking on the ‘Thanks’ button underneath the video. Thank you for your help!
AA516/AE512 Week05
zhlédnutí 543Před 3 měsíci
This is the lecture schedule and homework for week05 of AA512 and AE512. All Flight Mechanics videos in a single playlist (czcams.com/play/PLxdnSsBqCrrEx3A6W94sQGClk6Q4YCg-h.html) #FlightMechanics You can support this channel via Patreon at www.patreon.com/christopherwlum or by clicking on the ‘Thanks’ button underneath the video. Thank you for your help!
Find the Radius of the Circle Inside the Triangle
zhlédnutí 825Před 3 měsíci
Suppose you are given a triangle, what is the largest circle that you can fit inside? Topics and timestamps: 0:00 - Right triangle 7:42 - Non-right triangle Lecture notes and code can be downloaded from github.com/clum/CZcams/tree/main/MathChallenge01 All math challenge videos in a single playlist (czcams.com/play/PLxdnSsBqCrrEq9f2shiXNzeHjDLRacmmD.html) You can support this channel via Patreon...
AA516/AE512 Week04
zhlédnutí 565Před 3 měsíci
This is the lecture schedule and homework for week04 of AA512 and AE512. All Flight Mechanics videos in a single playlist (czcams.com/play/PLxdnSsBqCrrEx3A6W94sQGClk6Q4YCg-h.html) #FlightMechanics You can support this channel via Patreon at www.patreon.com/christopherwlum or by clicking on the ‘Thanks’ button underneath the video. Thank you for your help!
AA516/AE512 Week03
zhlédnutí 578Před 3 měsíci
AA516/AE512 Week03
Direction Cosine Matrix from North East Down to East North Up
zhlédnutí 922Před 3 měsíci
Direction Cosine Matrix from North East Down to East North Up
AA516/AE512 Week02
zhlédnutí 974Před 3 měsíci
AA516/AE512 Week02
Chef’s Choice Model 15XV Electric Knife Sharpener: a Review with Quantitative Data
zhlédnutí 6KPřed 4 měsíci
Chef’s Choice Model 15XV Electric Knife Sharpener: a Review with Quantitative Data
Importing Table Data Into Matlab Using ‘readtable’
zhlédnutí 1,5KPřed 4 měsíci
Importing Table Data Into Matlab Using ‘readtable’
How to Remove the Brake Cable on an Electric Scooter
zhlédnutí 1,1KPřed 4 měsíci
How to Remove the Brake Cable on an Electric Scooter
DIY Knife Sharpness Tester
zhlédnutí 1,6KPřed 5 měsíci
DIY Knife Sharpness Tester
How to Repair the Durable Water Repellent (DWR) Finish on Your Rain Jacket
zhlédnutí 1,1KPřed 5 měsíci
How to Repair the Durable Water Repellent (DWR) Finish on Your Rain Jacket
The Jacobian Matrix
zhlédnutí 6KPřed 5 měsíci
The Jacobian Matrix
How to Remove the Cap on a Swiffer Wet Jet Bottle
zhlédnutí 19KPřed 5 měsíci
How to Remove the Cap on a Swiffer Wet Jet Bottle
Dimensionless Aerodynamic Coefficients
zhlédnutí 1,8KPřed 6 měsíci
Dimensionless Aerodynamic Coefficients
Monitor Won’t Turn On - Solved!
zhlédnutí 5KPřed 6 měsíci
Monitor Won’t Turn On - Solved!
How to Wash and Dry a Down Jacket
zhlédnutí 1,1KPřed 6 měsíci
How to Wash and Dry a Down Jacket
Demolish Concrete Using Only a Sledgehammer
zhlédnutí 1,3KPřed 6 měsíci
Demolish Concrete Using Only a Sledgehammer
How to Replace a Dryer Thermal Fuse
zhlédnutí 11KPřed 6 měsíci
How to Replace a Dryer Thermal Fuse

Komentáře

  • @DogNinja1o1
    @DogNinja1o1 Před 5 hodinami

    Dryer belts are strong, and a broken one is often the symptom of a problem, not the actual problem.

  • @radoraan5272
    @radoraan5272 Před 6 hodinami

    first of all i want to thank you for all your work Christopher! amazing work! In second place i wanna share a dubt, to be exactly in 1:05:00 in the matlab code you use a function called "DrawFrame", and my question is how did you define the function? i tried to found it in internet but i couldn't.

  • @BluPhone-mv1ic
    @BluPhone-mv1ic Před 13 hodinami

    Did audio come out of the TV from the phone.

  • @BluPhone-mv1ic
    @BluPhone-mv1ic Před 13 hodinami

    I like him, what a nerd, Poindexter, hooking everything together.

  • @jegjr
    @jegjr Před 17 hodinami

    Googled, and found your video. Mine had same problem as yours, same Opener as yours (except 1996). Followed your video, found exact same burned-out solder spot as yours, except no “M” on my board, soldered it - Fixed! Thanks!

  • @johnsiebers8745
    @johnsiebers8745 Před dnem

    I had the "frozen clock" issue on my 2014 Focus after getting TCM replaced (long story). A SYNC master reset did not correct the issue and I did not want to pull the battery - so I simply pulled the fuse, started the car to demonstrate no power to the sync/radio with car off - I replaced the fuse then everything worked and I was able to reset clock.

  • @davidebenedettivalentini1812

    Great video! You could have made half the effort considering zeros and poles have the same Bode Plot flipped on the w-axis. Here is the proof: 20log10( 1/|G(s)| ) = -20log10( |G(s)| ) ∠( a(t) / b(t) ) = ∠a(t) - ∠b(t) = - (∠b(t) - ∠a(t) ) = - ∠( b(t) / a(t) )

  • @michaelmorrison827

    Lies, It does, it doesn't have to be put in ultimate whatever that means it's like this.Urban legend of ultimate.Otherwise there's certain phones that can do.This with maybe something like that but highly unlikely

  • @davidebenedettivalentini1812

    Great content, can't thank you enough. The only thing i missed is, in last example, if there was a criterion for determining which poles go to infinity and which poles are attracted to zeros. I sketched p1-> z1 and p2 -> z2 with p4 and p5 going to infinity but MatLab proved me wrong.

  • @user-ss1dp7he8t
    @user-ss1dp7he8t Před 2 dny

    Ineed to convert data from rf node to an image reconstruction image ? Can you make video pls

  • @Janice-vt4tu
    @Janice-vt4tu Před 2 dny

    I don't have that tool!! What is another way to make it work.

  • @indo_cad8877
    @indo_cad8877 Před 3 dny

    Thanks

  • @bobbymeredith7208
    @bobbymeredith7208 Před 3 dny

    Worked!!

  • @michaelcornaglia2788

    Hi Chris. Do you sell the fulcrum set up? I would love to buy one from you.

  • @robotisim
    @robotisim Před 3 dny

    USTAAD . Boht upar Can you please create similar styled detailed and intuitive lecture on MPC. Although Thanks :)

  • @johoro2510
    @johoro2510 Před 3 dny

    Asi máš telefon Samsung. U Redmi note 9 mi to takto jednoduše nefunguje. Je potřeba v telefonu něco nastavit pro odeslání signálu pro přenos?

  • @Yoshi-Mooch
    @Yoshi-Mooch Před 4 dny

    First and foremost, thank you for the tutorial, I couldn’t have done it without you. As somebody who makes tutorials, I appreciate the effort it takes. However, my one criticism is when you had the brackets on upside down. You should have re-filmed that part because that is very confusing, especially to a non-English speaker that doesn’t always pick up on the notes like you left on the screen. Nonetheless not trying to be rude or anything. I appreciate the tutorial as mine did not come with any instructions.

  • @lettybromenschenkel5807

    use a leaf blower often to clean out your chipper... works good

  • @topjmmi
    @topjmmi Před 4 dny

    Dude did spider man help you with all those straps lol. So much time to load and unload do you get a chance to ride?

  • @Lauren1988
    @Lauren1988 Před 4 dny

    Mine is not working everything hooked up, what am I not doing. Trying to hook up to smart tv??? Help

  • @reginaldbreyton5265

    How would you design a PID controller using the root locus, when the open loop transfer function has complex poles

  • @matteoposi9583
    @matteoposi9583 Před 4 dny

    If im not mistaken, thst costant is 1 over speed right? How can i prove it?

  • @oceanside128
    @oceanside128 Před 5 dny

    Nice tutorial. However "install failed" has been my experience on the google pixel 4a.

  • @cathyowen2123
    @cathyowen2123 Před 5 dny

    No app in galaxy

  • @BoyRod
    @BoyRod Před 6 dny

    At 34:39, calling it "translational" seems incorrect, there can be rotation too. Some people simply call it "the acceleration of the origin of the moving frame" (relative to the frame of reference). But you are not the only one who use that term, is it through misuse of language ?

  • @VenoXj1
    @VenoXj1 Před 6 dny

    How to ruin a nice looking helmet - Speedrun Edition.

  • @josefbauer7772
    @josefbauer7772 Před 6 dny

    Nefunguje to je to činský šmejd

  • @mikemullenix6956
    @mikemullenix6956 Před 6 dny

    Good video, would have liked 11:59 to see if they could pick up #9 lead bird shot. Some units have issues with the switch not working. And internal electronics . Such as the fuse and circuit board.

  • @jenniferwallhoward6974

    I did this, changed the clock and it froze again. trying it again

  • @twomorebeers520
    @twomorebeers520 Před 7 dny

    Hire a professional next time 😅

  • @ButchFury
    @ButchFury Před 7 dny

    Bro how do you turn it off tough?... hahaha

  • @pnmA25
    @pnmA25 Před 7 dny

    Thanks for the video and for esp. useful information that the heavy weight of this mailbox may make it a bad candidate for cantilever-type installation.

  • @PineMountain981
    @PineMountain981 Před 8 dny

    Extremely well done explanations and straightforward & clear "how-to" and "what this does" instructional video, Chris.

  • @Retrofire-47
    @Retrofire-47 Před 8 dny

    You are the GOAT for making this vid so easy to understand. took my ignorant ass and got me educated.

  • @Retrofire-47
    @Retrofire-47 Před 8 dny

    Holy fuck. You busted my brain... an infinite number of possible solutions for an angle's tangent. OK!

  • @lunasmama84
    @lunasmama84 Před 8 dny

    You're a genius! I hope this fixed my problem!!

  • @thechumpsbeendumped.7797

    Some scales have a max-weight memory. I'm trying to find the name and when I do I'll post it for anyone here that's interested. I have a couple of suggestions for slightly modifying your 3D-printed parts. With the fulcrum, move the two legs straddling the scale forward, so that when viewed from above it's a 3-pointed star (think, Mercedes badge) with the fulcrum in the centre. That way when you press down with the blade it won't tip the device and you'll no longer need to hold it. My second idea is partly esthetic and partly practical. Do the same with the part that sits on the scale and incorporate some way of it nesting with magnets inside the legs of the fulcrum for storage. Felix Immler had a similar idea and found that 6.5kg 0.3mm fishing line was very close to the filament that you can buy from Edge On Up but a tiny fraction of the cost.

  • @schreib7343
    @schreib7343 Před 9 dny

    THIS was exactly my problem. Thanks. Great video, confirmed my problem. Time to pull out the hair dryer. However, after removing all the water below the coil I poured HOT water into the coil drain and . . . EXPECTED?! that hot water to melt any ice in the drain tubing and. . . disappear. Tried this 3 times and it stayed in the funnel under the coil. So, I must not understand everything that is happening here. The drain still appears plugged but not by ice! I can only figure that there is some sort of automatic valve below that opens and allows water to drain under certain conditions. However, even if it does, where does this water go? I have never seen water on my floor until this happened and it came from overflowing the bottom of the freezer floor. I will reassemble and hope for the best!

  • @TheSoCalSailing
    @TheSoCalSailing Před 9 dny

    QQ: what did you do w/ the passenger AC vents and the blower at the rear of the van? Any video of that? Any best practices or lessons learned before I take my van apart?

  • @JoseArrom
    @JoseArrom Před 9 dny

    Multiple packets? There could be a repeater nearby?

  • @KenjiEspresso
    @KenjiEspresso Před 10 dny

    2014 Ford Focus just did this. I put in an Optima Yellow Top. Everything perfect but the clock 🤦‍♂️

  • @luistapia1942
    @luistapia1942 Před 10 dny

    Suggestion, I know inwould loose the Allen key, so I would tape to the key to the bottom.

  • @adrianmsantangelo
    @adrianmsantangelo Před 10 dny

    This was great, thank you Christopher! We ended up purchasing the LED version for my son who is going into high school (and an avid gamer). Video was helpful for build and customization ideas. Love it! Side note as I saw your shirt: My daughter is an incoming freshman at UW this fall, and a direct ENGRUD, likely moving to mechanical/environmental engineering. GO DAWGS! 💜

  • @bernadettepesce773
    @bernadettepesce773 Před 10 dny

    A couple weeks ago I had tried simply chipping out the ice on the bottom of the freezer but it refroze within 24 hours.

  • @bernadettepesce773
    @bernadettepesce773 Před 10 dny

    Thank you so much! I'm having exactly the same problem.

  • @toni4729
    @toni4729 Před 11 dny

    Wouldn't it be simpler to just switch the thing off for a few hours?

  • @ajishabraham4332
    @ajishabraham4332 Před 11 dny

    Thanks for the solution..it helps 😊

  • @schechnera
    @schechnera Před 11 dny

    What a great idea! I’ve seen Todd on Project Farm using that edge tester, and I’ve always wondered how much they cost. This is a much cheaper alternative. I am going to print something like this for my kitchen scale, but I think I’ll try to figure out a way to make my own test articles, maybe using nylon thread or something. Thanks!

  • @AndyLucas363
    @AndyLucas363 Před 12 dny

    Thanks Christopher! Your video was immensely helpful. In addition to melting the ice blockage I needed to use a coat hanger (gently) in the drain to fully free the blockage. Pretty satisfyting to watch the standing water immediately drain. Great opportunity to clean the freezer too!

  • @husaynjr385
    @husaynjr385 Před 12 dny

    Thank you professor ❤