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Before You Bury Your Dreams, Watch This | Ben Nemtin Speech | Goalcast
At the lowest point in his life, Ben Nemtin ask himself a very important question: "If anything was possible, what would I do?" Video Script: I dropped out of the University and I got dropped from the rugby team it became a shut-in in my parents house unable to leave and all of this caused me to slide into a depression now these feelings lasted for months until my friends insisted that I join them to live and work in a new town for the summer puddling then did I start to feel like I was coming out of my fog and after that summer I made a decision to only surround myself with people that inspired me I didn't know it then but that one small decision would completely change the rest of my life and what kid came to mind his name is Johnny I said Johnny let's make a movie the problem was we had no idea what we wanted to make a movie about there were so many things that we wanted to do but we hadn't done them because they were buried we were paired by work by school by life and we had moments of inspiration but eventually those became buried by the day-to-day we asked the question what do you want to do before you die and with that we made a list of our buried dreams right we just decided to make the most epic bucket list of all time so if anything were possible what would you do and the list items that I was convinced were impossible have somehow been checked off while we would make our own TV show right at number one New York Times bestseller tell a judge you want the truth you can't handle the truth walk away from explosion in slow motion and have a beer with Prince Harry we also made a promise every item we crossed off our bucket list we'd help a complete stranger do something on their list I wanted to find a story in Utah a story of helping someone else do something they want to do and we found an incredible story with the help of the University and it's proof that sometimes it doesn't take much to make a huge impact we have this really cool thing for you tonight because you're such an amazing person we know how much you love basketball yes they made you your own Jersey [Music] if he can do that I can do anything so oddly enough it's not these big list items that mean the most it's been the times when we've helped other people do what they love that remain the highlight and it all started with the bucket list we asked the question what do you want to do before you die and the list items that I was convinced were impossible have somehow been checked off list items like number 95 play basketball with President Obama at the White House sit with Oprah and we even crossed off have a beer with Prince Harry just know that there will be ups and there will be downs there will be times when you struggle we're all human beings and when you hit that struggle know this you are not alone our struggles can be our strengths when we embrace them rather than try to hide them because this is our true self and who you truly are is exactly who you need to be now take a second to think about your secret dream all right what is it now that you're thinking about it how do you accomplish it I only know five things here are the five steps to make it be impossible impossible write down your dream you take an idea and you make it real you're effectively breathing life into your dreams you've begun to prioritize your goals studies show that people that write down their goals are 40% more likely to succeed it's an easy 40 percent take it if you don't talk about your dreams no one can help you that guarantee help will show up in those unexpected ways some people don't talk about their biggest dreams because they're afraid of what other people might think or they're afraid of failure well failure is usually a course correction to success persist you fail because you stop trying success depends on consistency of effort as much as it does of quality of work you can produce great work and not have it recognized trying again and again makes all the difference step 4 take moonshots quite simply a big dream motivates you to get out of bed every morning and it attracts the best people and best talent by your you want those people standing next to you and finally step 5 give when people see you out in the world helping others they want to help you Jim Carrey says the effect you have on others is the most valuable currency there is it's the times when I stepped into someone else's life in a moment that means so much to them like our friend Doug that I know will stick with me until I die by doing what you love you inspire other people to do what they love and that ripple effect goes far beyond what you'll ever know it's time for you to track your true original course because today is the youngest you will ever be you

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This equation will change how you see the world
The logistic map connects fluid convection, neuron firing, the Mandelbrot set and so much more. Video Script: what's the connection between a dripping faucet the Mandelbrot set a population of rabbits thermal convection in a fluid and the firing of neurons in your brain it's this one simple equation this video is sponsored by fast hosts who are offering UK viewers the chance to win a trip to South by Southwest if they can answer my question at the end of this video so stay tuned for that let's say you want to model a population of rabbits if you have X rabbits this year how many rabbits will you have next year well the simplest model I can imagine is where we just multiplied by some number the growth rate R which could be say 2 and this would mean the population would double every year and the problem with that is it means the number of rabbits would grow exponentially forever so I can add the term 1 minus X to represent the constraints of the environment and here I'm imagining the population X is a percentage of the theoretical maximum so it goes from 0 to 1 and as it approaches that maximum then this term goes to 0 and that constrains the population so this is the logistic map xn plus 1 is the population next year and xn is the population this year and if you graph the population next year versus the population this year you see it is just an inverted parabola it's the simplest equation you can make that has a negative feedback loop the bigger the population gets over here the smaller it'll be the following year so let's try an example let's say we're dealing with a particularly active group of rabbits so R equals two point six and then let's pick a starting population of 40% of the maximum so point four and then times 1 minus 0.4 and we get 0.62 four okay so the population increased in the first year but what we're really interested in is the long term behavior of this population so we can put this population back into the equation and to speed things up you can actually type two point six times answer times one - answer get point six one so the population dropped a little hit it again point six one nine point six one three point six one seven point six one five point six one six point six one five and if I keep hitting Enter here you see that the population doesn't really change it has stabilized which matches what we see in the wild populations often remain the same as long as births and deaths are balanced now I want to make a graph of this iteration you can see here that it's reached an equilibrium value of point six one five now what would happen if I change the initial population I'm just going to move this slider here and what you see is the first few years change but the equilibrium population remains the same so we can basically ignore the initial population so what I'm really interested in is how does this equilibrium population vary depending on are the growth rate so as you can see if I lower the growth rate the equilibrium population decreases that makes sense and in fact if R goes below one well then the population drops and eventually goes extinct so what I want to do is make another graph where on the x axis I have R the growth rate and on the y axis I'm plotting the equilibrium population the population you get after many many many generations okay for low values of R we see the populations always go extinct so the equilibrium value is zero but once our hits 1 the population stabilizes on to a constant value and the higher R is the higher the equilibrium population so far so good but now comes the weird part once our passes three the graph splits in two why what's happening well no matter how many times you iterate the equation it never settles on to a single constant value instead it oscillates back and forth between two values one year the population is higher the next year lower and then the cycle repeats the cyclic nature of populations is observed in nature too one year there might be more rabbits and then fewer the next year and more again the year after as our continues to increase the fork spreads apart and then each one splits again now instead of oscillating back and forth between two values populations go through a four year cycle before repeating since the length of the cycle or period has doubled these are known as period doubling bifurcation z' and as R increases further there are more period doubling bifurcation z' they come faster and faster leading to cycles of 8 16 32 64 and then at R equals three point five seven chaos the population never settles down at all it bounces around as if at random in fact this equation provided one of the first methods of generating random numbers on computers it was a way to get something unpredictable from a deterministic machine there is no pattern here no repeating of course if you did know the exact initial conditions you could calculate the values exactly so they are considered only pseudo-random numbers now you might expect the equation to be chaotic from here on out but as R increases order returns there are these windows of stable periodic behavior amid the chaos for example at R equals 3 point 8 3 there is a stable cycle with a period of 3 years and as R continues to increase it splits into 6 12 24 and so on before returning to chaos in fact this one equation contains periods of every length 3750 1052 whatever you like if you just have the right value are looking at this bifurcation diagram you may notice that it looks like a fractal the large-scale features look to be repeated on smaller and smaller scales and sure enough if you zoom in you see that it is in fact a fractal arguably the most famous fractal is the Mandelbrot set the plot twist here is that the bifurcation diagram is actually part of the Mandelbrot set how does that work well quick recap on the Mandelbrot set it is based on this iterated equation so the way it works is you pick a number C any number in the complex plane and then start with Z equals 0 and then iterate this equation over and over again if it blows up to infinity well then the number C is not part of the set but if this number remains finite after unlimited iterations well then it is part of the Mandelbrot set so let's try for example C equals 1 so we've got 0 squared plus 1 equals 1 then 1 squared plus 1 equals 2 2 squared plus 1 equals 5 5 squared plus 1 equals 26 so pretty quickly you can see that with C equals 1 this equation is going to blow up so the number 1 is not part of the Mandelbrot set what if we try C equals negative 1 well then we've got 0 squared minus 1 equals negative 1 negative 1 squared minus 1 equals 0 and so we're back to 0 squared minus 1 equals negative 1 so we see that this function is going to keep oscillating back and forth between negative 1 and 0 and so it'll remain finite and so C equals negative 1 is part of the Mandelbrot set now normally when you see pictures of the Mandelbrot set it just shows you the boundary between the numbers that cause this iterated equation to remain finite and those that cause it to blow up but it doesn't really show you how these numbers stay finite so what we've done here is actually iterated that equation thousands of times and then plotted on the z axis the value that that iteration actually takes so if we look from the side what you'll actually see is the bifurcation diagram it is part of this Mandelbrot set so what's really going on here well what this is showing us is that all of the numbers in the main cardioid they end up stabilizing on to a single constant value but the numbers in this main bulb will they end up oscillating back and forth between two values and in this bulb they end up oscillating between four values they've got a period of four and then eight and then 16 32 and so on and then you hit the chaotic part the chaotic part of the bifurcation diagram happens out here on what's called the needle of the Mandelbrot set where the Mandelbrot set gets really thin and you can see this medallion here that looks like a smaller version of the entire Mandelbrot set well that corresponds to the window of stability in the bifurcation plot with a period of three now the bifurcation diagram only exists on the real line because we only put real numbers into our equation but all of these bulbs off of the main cardioid well they also have periodic cycles of for example 3 or 4 or 5 and so you see these repeated ghostly images if we look in the z axis effectively they're oscillating between these values as well personally I find this extraordinarily beautiful but if you're more practically minded you may be asking but does this equation actually model populations of animals and the answer is yes particularly in the controlled environment scientists have set up in labs what I find even more amazing is how this one simple equation applies to a huge range of totally unrelated areas of science the first major experimental confirmation came from a fluid dynamicists named Lib Taber he created a small rectangular box with mercury inside and he used a small temperature gradient to induce convection just two counter-rotating cylinders of fluid inside his box that's all the box was large enough for and of course he couldn't look in and see what the fluid was doing so he measured the temperature using a probe in the top and what he saw was a regular spike a periodic spike in the temperature that's like when the logistic equation converges on a single value but as he increased the temperature gradient a wobble developed on those rolling cylinders at half the original frequency the spikes in temperature were no longer the same height instead they went back and forth between two different heights he had achieved period two and as he continued to increase the temperature he saw period doubling again now he had four different temperatures before the cycle repeated and then eight this was a pretty spectacular confirmation of the theory in a beautifully crafted experiment but this was only the beginning scientists have studied the response of our eyes and salamander eyes to flickering lights and what they find is a period doubling that once the light reaches a certain rate of flickering our eyes only respond to every other flicker it's amazing in these papers to see the bifurcation diagram emerge albeit a bit fuzzy because it comes from real-world data in another study scientists gave rabbits a drug that sent their hearts into fibrillation I guess they felt there were too many rabbits out there I mean if you don't know what fibrillation is it's where your heart beats in an incredibly irregular way and doesn't really pump any blood so if you don't fix it you die but what they found was on the path to fibrillation they found the period doubling route to chaos the rabbits started out with a periodic beat and then it went into a two cycle two beats close together and then a four cycle four different beats before it repeated again and eventually a periodic behavior now it was really cool about this study was they monitored the heart in real time and used chaos theory to determine when to apply electrical shocks to the heart to return it to periodicity and they were able to do that successfully so they used chaos to control a heart and figure out a smarter way to deliver electric shocks to set it beating normally again that's pretty amazing and then there is the issue of the dripping faucet most of us of course think of dripping faucets as very regular periodic objects but a lot of research has gone into finding that once the flow rate increases a little bit you get period doubling so now the drips come two at a time to tip to tip and eventually from a dripping faucet you can get chaotic behavior just by adjusting the flow rate and you think like what really is a faucet well there's constant pressure water and a constant size aperture and yet what you're getting is chaotic dripping so this is a really easy chaotic system you can experiment with at home go open a tap just a little bit and see if you can get a periodic dripping in your house the bifurcation diagram pops up in so many different places that it starts to feel spooky and I want to tell you something that'll make it seem even spookier there was this physicist Mitchell Feigenbaum who was looking at when the bifurcations occur he divided the width of each bifurcation section by the next one and he found that ratio closed in on this number four point six six nine which is now called the Feigenbaum constant the bifurcations come faster and faster but in a ratio that approaches this fixed value and no one knows where this constant comes from it doesn't seem to relate to any other known physical constant so it is itself a fundamental constant of nature what's even crazier is that it doesn't have to be the particular form of the equation I showed you earlier any equation that has a single hump if you iterate it the way that we have so you could use xn plus 1 equals sine X for example if you iterate that one again and again and again you will also see bifurcations not only that but the ratio of when those bifurcations occur will have the same scaling for point six six nine any single hump function iterated will give you that fundamental constant so why is this well it's referred to as universality because there seems to be something fundamental and very Universal about this process this type of equation and that constant value in 1976 the biologist Robert May wrote a paper in nature about this very equation it's sparked a revolution and people looking into this stuff I mean that papers been cited thousands of times and in the paper he makes this plea that we should teach students about this simple equation because it gives you a new intuition for ways in which simple things simple equations can create very complex behaviors and I still think that today we don't really teach this way I mean we teach simple equations and simple outcomes because those are the easy things to do and those are the things that make sense we're not gonna throw chaos at students but maybe we should maybe we should throw at least a little bit which is why I've been so excited about chaos and I am so excited about this equation because you know how did I get to be 37 years old without hearing of the Feigenbaum constant ever since I read James Gleeks book chaos I have wanted to make videos on this topic and now I'm finally getting around to it and hopefully I'm doing this topic justice because I find it incredibly fascinating and I hope you do too hey this video is supported by viewers like you on patreon and by fast hosts fast toasts is a uk-based web hosting company whose goal is to support UK businesses and entrepreneurs at all levels providing effective and affordable hosting packages to suit any need for example they provide easy registration for a huge selection of domains with powerful management features included plus they offer hosting with unlimited bandwidth and smart SSD storage they ensure reliability and security using clustered architecture and data centers in the UK now if you are also in the UK you can win two tickets to South by Southwest including flights and accommodation if you can answer my text question which is which research organisation created the first website if you can answer that question then enter the competition by clicking the link in the description and you could be going to South by Southwest courtesy of fast hosts their data centers are based alongside their offices in the UK so whether you go for a lightweight web hosting package or a fully fledged dedicated box you can talk to their expert support teams 24/7 so I want to thank fast hosts for supporting veritasium and I want to thank you for watching

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A Techless Bonanza in Tokyo
So this is a thing that happened. I travel to Tokyo and hang out with Sara Dietschy who spent the day not being able to use anything IBM and it was harder than expected; the results may surprise you; you won’t believe what happened next. Anyway; watch the video because, it turns out without IBM it's tres hard to get proper ramen. You'll see. Video Script: my gosh this is beautiful my name is Sara DG rhymes with peachy I create videos about tech and creativity I have no idea what we're doing here but we're in Tokyo and we're going to have an adventure hi-yah come on guys so look you don't really know what you're doing here do you no idea somewhere over there there is a restaurant called for Kuja and it just does dynamite ramen this guy has been making ramen there for like 150 years the idea is that you just need to get there by 6 p.m. that's that's pretty much it didn't you do that sure ask me if there's a catch what's the catch you can't use anything that was invented by IBM or could use their technology and you can't be like man it's incredibly important if you're not there at 6 p.m. you fail you lose the challenge ok all right would you give me a phone I'm sorry I'm really sorry 10 just right that is mine because unfortunately your suffering contains several gigabytes of DRAM chips the RAM was invented by an IBM ax so I'm excited but I'm a little nervous the fact that I don't have my phone is terrified you just tell me what we're doing I'm sorry where do you stand on IBM Watson yeah yeah IBM could very well be in our vehicle two virtual assistants I'm sorry I know I don't make the rules I think she's gonna struggle to be honest I don't think it's the easiest task IBM technologies and a lot of stuff that you might not think is if she's really stuck I'm gonna give her a lifeline do you know how to unlock the bikes I'll translate for you hey excuse me do you know how to unlock this bike Osaka tomar-re masses No okay you know I'm gonna handle this okay okay excuse me unlock the spike do you have no phone I use tech for literally everything my level of confidence now is probably a five at skelton I can help you say Kaushal that means malfunction breakdown failure and I think that's what we're experiencing right now yeah I think I can do this um no no no no no what do you want to say ah found the map oh yeah but how are you paying for the map I'm sorry we can't pay for the map by credit card IBM technology is often involved in point-of-sale transaction it's basically we find a different way to do this because we can't have that map you know it might be time for one of my lifelines did I hear the word lifeline so we got one I have to hug three strangers I don't even count I don't even count it's very sweet you know it's not gonna misses a challenge where I have to get three hugs in order to get a map is that what I'm doing out here hug hug is this way right okay hug there all the time but this is adorable I can't secure my final hug hug I got far everyone had smiles on their faces besides the thousands of people who didn't yes so I have some that no it's kind of like where do I need to go you know one would think that I have never used a paper map before but I've actually used it once but I will say we did not get to where we needed to go so hot I am thirsty I am parched oh yeah sorry I would have got you one but I think there's a chance that the the produce inside of here was traced on the IBM food trust using blockchain technology so of course it can do promise would you find a deadline so why do you have media I just can't change have you just thought about thank you okay [Music] automotive transportation and while do I I just might make it I've got 20 minutes but anyone seen it allowed America keep going and he'll see the shop on your left [Music] hello James you made it welcome to work this is gosh II can't believe you I mean I can obviously I mean obviously we're gonna go your task you have at the orientation tell me what you think that's wrong well I fit though well then I can't believe too much to do we've done the adventure without IBM technology with mean we had a lifeline but we did a lot of things so it's been it's been an adventure I'm genuinely pressed what about should get it I was surprised to find that IBM tech wasn't so much what is technology it's community it's connecting people from around the world even after finishing the ROM and everyone's having fun take the pictures this is a great moment [Music]
Added: 7th February 2020
Views: 855
Tags James Veitch ibm ad

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Cat and Dog Road Trip
Prince Michael and his new friend, Bob, set out for a road trip in the brand new film Cat and Dog Road Trip. Video Script: Yeah, maybe me have nintindo switch next year too. Wut the?? Who let the dog out? Who who who who? Hmm, $500 enough for nintindo switch.. Or flight to hawaii! Wait, this that crazy dog! But how me get him to Colorado? U ordered a car, sir? U owe me 5 bucks for that. So...u gonna shut the door or what? (disgusting Bob farts) Me think this dog might be sick. Remember, anything 2 get 2 Hawaii. Wood it kill u to chew with ur mouth-- Me should have paid attention in shop class. Bob, u know how to use that? Me didnt realize me riding with nascar pit crew dog. Bob, that was incredib-- Nevermind. (disgusting Bob fart) Wood it kill u to chew with ur mouth-- Goodbye sweet donettes. Umm...u know that also food, right? Goodbye sweet weenies. Oh brother. Hog the blankets much? This the worst. Wut the? Wow, Bob love me. Have me been bad? Maybe Bob okay after all. No one going 2 pick up cat and dog but... Maybe they pick up sexy winter lady? Welp. Beggers cant be choosers. Umm...this guy going really fast. U hear sirens too, right? Okay, fine. Time 2 be hero. (Justice being served) How bout Clark County let me keep car? Back 2 square one. (disgusting Bob fart) Watch and learn, Bob. Nice book, bb. Now u try. Okay, time 2 get off train! When in Rome... CANNONBALL!!! NO THANK U!!! Tastiest cannonball ever. Special treats for special friends, mon? Wooooow. Me see things so clearly now. Me think me feeling...sad. Wait, where Bob's house? Where Bob's family? Wow, this guy monster. Me stuck between rock and hard place. What me thinking? Me cant leave Bob here! Time 2 head home. Morning pal. Me just about to turn around. Me get it. U have home here. Me feel so...empty. Maybe me crazy but me miss Bob farts. Oh no. Bob make huge mistake. MICHAEL! BOB COMING, MICHAEL! Wut that smell? // Hmmm it smell like-- Hey it me Bob! Remember me? This was more comfy in grass. Thank god for edit button. Michael, what we waiting on pal? Nuthin. Lets go home. (The beginning of a beautiful friendship)

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Things you can make from old, dead laptops
In this video I'll be showing you several different things you can make from old, dead laptops! Video Script: laptops useful things during their working life but if they break or just get too old and too slow to do anything productive with what can you do with them well if it's the latter situation and it's just too old and too slow to do any real work on there are still some very useful use cases that you can put them to which I will be going into more detail about later but if you have a broken one you are in for a whole heap of fun as there are loads of things you can make out of dead laptops as there are so many still useful components and materials inside waiting to be repurposed so let's get creative this video is sponsored by Squarespace so the first task is to open them up so that we can get at the components which usually involves unscrewing any screws you can find on the back and prying apart the plastics this process needs to be continued as you carefully separate all of the internals after which we're ready to start repurposing them as you can see there are quite a few of them most of which can be put some kind of use the first component I want to focus on though other speakers some laptops particularly those made around 2008 where media playback was a big focus had ridiculously good speakers and some even featured mini subwoofers as they're usually built into their own sealed enclosures you don't need to build a speaker box for them and that can be used as is my particular ones are even ported for extra base which is very cool now as they're physically quite flat and make an interesting shape when placed together I glued them to each other and soldered them up to a mini bluetooth amplifier which I also glued in place as this amplifier works off 5 volts I sold it on a USB socket so that it can be plugged into a USB battery bank for power now to make it look a bit neater i next got some plastic strips and glued them together to fit around the perimeter of the speakers and after fitting on some thin fabric to apps as a grill it could be mounted directly onto a wall as it's Bluetooth it can be wirelessly connected to a phone or tablet and used to listen to music or podcasts all while being unobtrusive and actually very impressive sounding for the size thanks to the well designed speakers not bad moving on to the next project I want to focus in on the cooling system in laptops these take heat away from particularly hot running ICS by utilizing heat pipes which move the heat over to a set of fins which then transfer the heat into the air that's forced through them by an accompanying fan as they can handle quite a lot of heat output they're actually perfect for reusing to cool high-power LEDs small LEDs like this have various power level options and as mine actually use 10 watts of power each they would burn up very quickly if powered up on their own but once mounted onto the heat plates with some thermally conductive glue and with the fan wired to spin up they can be powered indefinitely thanks to the high level of cooling if you end up doing this yourself don't forget to use an appropriate LED driver circuit though or you could still fry the LED with too much current I attached mine to a curved piece of aluminium to make a stand and it turned out to look pretty cool thanks to the different materials and a visible cooling system this makes for a fantastic light to use while working but it could also make a great desk lamp too particularly if you're interested in computers and want a lamp made out of recycled parts now while we're on the topic of lighting laptop screens in particular are worth salvaging even if they're smashed like this one this is because when the LCD layer is removed you're left with a variety of potentially useful diffusion sheets friend lenses and an acrylic back panel these work together to spread out the backlight evenly and to take advantage of them as is you can leave them inside the screen casing and wire up the PCB on the back to trigger the screens built-in backlight this leaves you with a soft diffused light source that you can then put to a variety of uses for example you could use it as a tracing back light or mounted onto the wall to be a fake window you can even print your favorite pictures onto thin paper and have them now backlit for some striking wall art pretty neat for help wiring these up to work like this I do have a separate dedicated video on the topic which you can find a link to in the description now if none of these strike your interest you can take the various layers out and make use of them with LED strips as these have adhesive on the back and can be cut to any length one idea is to stick a short length to one side of a diffusion sheet from the screen adding some double-sided tape opposite this allows the sheet to be looped around to create a cylinder which once mounted onto a wall diffuses the light emitted from the LED strip so that it significantly reduces the glare from it and turns it into a pretty slick wall light even better though is using the friend lenses instead for this as the lenses bend the light and cause quite interesting distortions they when wrapped around the LEDs make a really nice sparkly rainbow effect that changes depending on what angle you look at it from this is still easy on the eyes but now it looks really nice visually as well as for the screens acrylic back panel well this is where you can get really creative for this cover the sheet in masking tape on both sides and then trace a pattern or shape onto it now roughly cut around this with a rotary tool and then remove the remaining material with a file until you reach your traced line the tape can then be peeled away leaving you with your shape now to make this extra special we're going to light it up for which we'll be using a couple of small LED filaments these work off around three volts of power so a safe to touch and our cool running the first thing to do is to make some slots for these LEDs in a piece of wood and then cut out a base shape around them I stained mine to give it a bit more character the LED filaments can now be soldered onto some wires and pushed through two holes that need to be made in the slots once wired up they'll illuminate which means that the last job is to glue the acrylic cutout in place the light from the LEDs enter this cutout at the bottom and gets scattered around meaning that the whole thing gets lit up internally giving you a really awesome little feature light the creative possibilities here are endless and could make for really nice DIY gifts for people now if your screen is not smashed instead of dismantling it you may want to get a separate driver board for it which would allow you to use it as a standard independent computer monitor I again have a few videos about how to do this after which they can be used to make for example a dual screen laptop allowing for increased productivity and improved ergonomics or even a smart mirror where you can watch youtube videos as you do your teeth or have a shave as usual there are links to these in the description if you're interested now the next project we're going to make requires the use of one of the smallest discrete components you can find in our app top and it's location can vary so you will have to do some hunting but what you are looking for is a little cylinder with two small wires attached and this is in fact a microphone now these can actually sound very good proof of which is that the little lavalier microphone that I'm wearing right now was made out of a laptop microphone that have disassembled several years ago and it sounds so good that have just used it in almost every video I've made since then so that's hopefully testament to how good they can potentially sound now as most of you won't have a use for a little lovely microphone I will instead be showing you how to make a little clip on communication microphone that you can clip onto your headphones and use for extremely clear calls or even communicating well with your teammates in games making this is quite simple first requiring the microphones wires to be soldered to a shielded audio cable this shielded cable prevents buzzing and interference noises so is quite important now we can thread this wire through a small piece of plastic tubing leaving a short length of wire at the end for adjusting microphones position to mount it to your headphones the easiest way is to mold a small clip out of sugru once dried the tube can be slid in place and adjusted as needed while that's essentially it for the headset the microphone still needs amplifying as computers typically don't have very good microphone preamps so their microphone inputs usually introduce a lot of hiss in to the audio signal the preamp I recommend can work off the 5 volts provided from a USB port and it's easy enough to wire up looking closely at it you should be able to see a few little jumpers these allow us to adjust the behavior of the amplification controlling both the overall volume and also the reaction speed of the board's Auto gain control this auto gain control can reduce the volume if the input is too loud so you'll never get sound clipping if you talk too loudly or shout once covered up this can be plugged into a computer's USB port and mic for an input and then used as a decent sounding budget microphone setup so how does it sound personally I think it sounds pretty good especially compared to most headset microphones out there and the auto gain control in the amplifier is doing a great job as well as I can talk quite quietly and it's still more or less the same volume as when I talk really loudly so that should make it better for any listeners on the other end not bad for reusing little microphone from a laptop moving on this is the hard drive and it's what all the data on the laptop is stored on so if you have any important files on it now's the time to plug it into an external USB enclosure so that you can access them and back them up and honestly if the drive is of a reasonable capacity this should really be its main use case as it's just what is most useful for storing data now if the drive is broken or perhaps just too small and capacity to be worth using for anything else here are a few interesting and fun projects that you can make by dismantling one to get inside one you'll need an appropriate screwdriver bit which can usually be found in the multi bit set and once you're inside you'll see the platters and head array when turned on this head scoots across the surface of the drive to read and write data as the platters spin quite fast one trick is to cut out a ring of sandpaper and glue it to the topmost platter this can then be used to clean tools or sharpen things like a pencil to be fair this is a little bit gimmicky as it's a lot faster just to use a pencil sharpener but it's still quite novel you can however unscrew these platters and as you can see they're very shiny as they actually have a nice ring to them too you could make a little wind chime with them and they scatter the light nicely when in the Sun you can even make a little mirrored analog clock with one which would be quite a nice gift for someone who is into their technology now going back to the drive there remains the head array now it's movement is derived from some coils underneath these powerful magnets so if you solder some wires to these coils the head can be forced back and forth by applying a voltage if we rigged up an audio amplifier to this it will actually vibrate along with the sound signal just like a speaker if you're wondering it is audible but it sounds very tinny adding a little paper cone improves matters but while it's bass heavy up close it quickly drops off and sounds tinny again further away and returns to sounding awful this isn't our goal though as we've already made a speaker anyway and the actual plan is much cooler so to start we'll need a small laser pointer taking it apart we can find the laser diode itself along with a driver circuit as the diode is very lightweight we can glue it to the head array so the tip too vibrates along with the sound signal can you see where this is going pointing is that a wall creates a visible analog vu meter which follows along to the beat of the music it looks really cool in person and I think it's a great use of a jet Drive so now it's time to talk about batteries now most older laptops actually have a battery pack that's made up of internally individual 18 650 battery cells which is great news for us because these are really easy to repurpose and put to other uses however the challenge is actually getting them out of the plastic enclosure as it's completely sealed closed and there's no screws or anything that you can just undo and then pop it open so it just involves breaking the plastic and prying it apart now you do run the risk of puncturing the battery cells and also causing short circuits so only do this if you know exactly what you're doing and as with everything it's of course at your own risk once you're in they can now be carefully separated by cutting through the wires and conductors holding them together now it's easy to cause short circuits here so you need to be particularly careful and before starting make sure you follow the circuit so that you start in the right place with the cells now separated they each need to be checked to make sure that their voltages are 2.8 volts or above lithium cells degrade and become unstable if they drop below this voltage so never use a battery that's below 2.8 volts as mine were all safely above this value they're good to reuse while you could use these in any number of projects you will need to implement protection circuitry so that you don't over discharge them and to ensure that they're all kept balanced during charging this can get quite complicated so instead I suggest getting a few empty single cell battery bank cases these are super cheap and have protection circuitry built-in which turns them off when the cell reaches 2.8 volts you can then use these to charge your devices or power things like the speaker project we made earlier battery banks can be quite expensive so just getting the enclosures and reusing old laptop batteries in them like this is a great way to save some money so so far we've made quite a few interesting things but before I move on and show you the last repurposing project which will leave me neatly onto showing you what to do with old but otherwise still working laptops I want to talk about this video sponsor Squarespace from making your own online store to building a personal portfolio Squarespace is the all-in-one platform to build a beautiful online presence or business their slick browser-based interface makes it easy for anybody to quickly build a website without any prior knowledge and their many templates give you a helping hand keeping up with modern design trends when viewed on a mobile device your website will even seamlessly switch to a unique mobile experience that matches its overall style so whatever you built will look great on every device every time you can even make an online store to sell any number of items you like whether physical or digital so your business has plenty of room to grow also it's worth noting that if you're new to web site design and need some help there excellent guides and 24/7 customer support means that you'll never be left to stuck wondering how to do something so what are you waiting for visit squarespace.com for a free trial and when you're ready to launch visit squarespace.com slash DIY perks for 10% off your first purchase of a website or domain and you can find a link to that down below so again that squarespace.com slash DIY perks for 10% off so the last repurposing project I want to cover is perhaps the one that will save you the most amount of money which is actually repurposing laptop webcams and using them to make a home security system this is fairly easy to do as laptop webcams usually use the USB protocol meaning that they can just be soldered up to a USB cable after which they can be used on any PC as a standard video input these can then be placed at various locations around your home which can be done discreetly as they're so tiny and unobtrusive once hooked up to a computer running some software like canta cam the webcams can be monitored and recorded and the software can even notify you by email of any movement caught by the cameras for more info there is you guessed it a link to a thorough video on the topic in the description now the computer that these webcams can all be plugged into doesn't have to be particularly powerful so this is actually a great use of an older one that still works but you don't know what to do with some more ideas particularly if the operating system is old as well is to use it as a retro gaming machine as some games don't work on modern pcs old laptops can also be a bit of a lifesaver for specific older hardware for example I have a spectrophotometer that measures the precise wavelengths of light and build a graph of their brightness great to have but the accompanying software only works on older 32-bit versions of Windows so it needs to be run on old hardware to use at all another thing you could do is use one as a media PC I actually took one apart a while ago for this task and to make it a bit nicer looking I transplanted the hardware into a new scratch-built case so that it wasn't an eyesore in the living room the last thing I'm going to suggest is that you literally just give it away to someone who doesn't have a PC whether it's a young person who needs to learn about how computers work or an old person who just needs access to emails they might have more patience to deal with the limit and it could prove to be really helpful to them so that's it for this video I think we've made some really interesting things and if you have any more ideas you can leave them in the comments down below now if you want to support my work you can do so by visiting patreon.com slash DIY perks and many thanks if you decide to support me on there but other than that you can always just consider pressing like and maybe consider subscribing as well but as for this video it's over so I shall go now I hope to see you next time goodbye for now

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