 Alright, so this first thing is just some background on how to make almost anything started by this dude called Neil Shershenfeld who founded the Fab that movements and as was pointed out before you started this thing called Fab Academy which is basically like a series of classes that people around the world can take to learn how to make almost anything. But for me I learned how to break almost anything or this is the point. And I was actually had the opportunity to take it in person with Neil. So if you go to this site, you can find all of the resources that he shared to learn all of these different making techniques. So if you're interested in, in any of them I highly recommend is he's kind of like a walking encyclopedia of how to build things. And as part of this course we are all expected to build a website to document our journey. So if you go to people you will be able to find like everyone's work. And in particular, here's mine and here's the stuff that I built over the weeks. And the purpose of this presentation today I decided to combine all of my most interesting learnings into a highlights reel. Oh yeah I have this thing as well like who am I personally. I'm Olivia, and my last name rhymes with Meow. It's Meow and I like cats. I was previously a startup founder I ran a wearable tech startup in Singapore I worked with DBS to create those payment wearable things. So I'm here, are you guys consultants, and I worked in HDI research. So my work is here but the main point of today is to talk about the curious and techie materials cats, very forceful materials that I played with during this course of how to make almost anything. So the whole thing is actually broken down into couple sub projects. If the internet here is good enough to play this video. I 3D printed holography. I created these NFC hollow cats. I made a shapeshifting wire flower, and also a Martian marigold, and a starry night PCB board. So I'll just talk about some of these things. And if you have any questions can stop me anytime I am very very keen on color changing shape changing and things that can use tech in creative ways. So, yes. Did you do the already coming explains in a video that I think we're in person. No, that was like dirty I think years ago, but I did play with no wires off. So, I was very curious what would happen if we 3D print on CDs. And basically what happens is the 3D filaments melt into the tiny doll goofs of a CD, and as the CD has this rainbow colors. They're not actually pigments, but structural color, which means that it reflects light in a certain way that produces those colors, and that color can actually be transferred to 3D prints in those micro structures. So when you remove the 3D print from a CD actually performs as a mold, and the color transfers, even though there's no like transfer of filament. It's very cool. You can also do that with diffraction grates which is this thin film that you sometimes see in window covers. I don't know to make like rainbow effects. So it almost looks like a film but actually it's just a very smooth to the touch surface that is that is producing these rainbow effects very very cool and very. Much better than a conventional 3D print, like, even on a glass surface it looks much more smooth than that. It also works if you use a 3D pen on on the CD directly produce effects like that. So that's my first experiment in 3D printing. Oh, I use a masking tape adapted. Yeah, it's like waxing. Yeah, it's not really it's like holographic in the sense of it has like shifting properties. This one as well it's not really hologram but what I did was I took a reference of pushing made a 3D object that milled out the shop bought and created these molds. And then reverse filled it with more like a kind of silicon mold. And I feel that with this is dry stone I believe, but I also play with resin. So I was able to create all of these a family of cats. Why won't you play. Anyways, I created these resin cats, and at the back of it I created a PCB, which has an antenna on it, and on my website I also have a JavaScript calculator for how to create an antenna of a certain frequency to pick up the frequencies coming from your smartphone, which you know you might use for Google pay or to open a door. So the antenna picks up the energy that's emitted from your phone's NFC signal and creates a, like a circuit that is active. What's the light on the LED. What's the, what's going. Oh, it's an LES. I'm very sad that my videos aren't playing but basically, there's an LED on the opposite side of this. The antenna is tuned to pick up the frequency of the smartphone which is like 1356 megahertz. And, oh no, they're not all not playing, I really said. Okay, we go to my website you'll be it. Yeah, exactly. Yeah. Oh here, you can see it. Thank you. It's a therapeutic kind of process because when you, when you glaze the cat almost you can you can see it becoming more and more shiny. Originally the milling machine creates a kind of striped effect, but when you pour resin over the top of the cat then it becomes very shiny and the blinking effect comes to very well. Very good access for the smartphone. I did it in America. Yeah, but I hope it is accessible and find a, find a maker space or something. I also made a metal cat, and this doesn't have an antenna, but, but using a an ally, Roto 128 I think, which is like a hobbyist metal that can be melted at a lower temperature. Is it due to the cellular signals or to the NFC function? It is due to the NFC, it's like seeking. So, you can see it, if you put it like in front of an MRT country you'll see it blinking faster, for instance. There are some phones I think like the Apple phone you need to have that handshake, so then it wouldn't work because there's no chip, but for like other things simple things like the door access point or the Google pay on Android phones still work. I did the same thing with a full PCB. And this one is starry night where the clouds are the antennas and again it's tuned to receive 1356 megahertz. Yeah. And, and all of this was as part of the course so the first few was like molding and casting learning 3D printing, learning 3D scanning, learning how to use the PCB milling machine, stuff like that. And then I was very curious about shape changing so I said the face right now, which is the kind of metal that you can train at a high temperature to form a certain shape. So what you need to do is you force it to stay in a shape, you put in an oven at 500 degrees Celsius for like five minutes. And then when you take it out you can like twist it in any new shape, but when you see it again, it will collapse back into that shape that you have trained it to be. It's a very complex like rose shape, and it ended up being very weak, because there was just too many constraints that I couldn't remember how to get back into that very difficult shape. So my difficulty was how can we make a beautiful looking flower using this metal. Yeah, shake memory alloy. There's actually a few kinds of shape memory materials is also like fishing line, I think it's called it's like a muscle wire, but that one just shrinks and expands when you expose it to, I believe, this one you can actually get it to form a certain shape. I'm really sorry about my videos. I think I believe doctors use it to form to go inside the heart and then like it forms a coil. Oh no. Something like a stent. But this medical grade. I don't really know how to make it because I learned from this process that is extremely difficult to, as you can see train it to to form a shape that is very constrained. I don't remember which side should go over which and it doesn't have enough force to go back into some shapes. So that was my challenge. How can we make this flower shape and I, I figured out how to make this simple petals. So you can see it. When it is not heated up, it is in like this limp position. And then when you put heat on it, which I did with the power supply, then it becomes a blooming flower. And I think this is like a method that's not that common as well because most people just expose it to heat using a heat gun or hair dryer. So I using this electrical approach it's more controlled, you can decide how much heat and when and like some pwm stuff to to make it look like more staged. So does it go back to this. That's very interesting so it actually goes. I'll show you a video later if my internet is good. I'll go back into a new position that is not really expected, sometimes it defies gravity, and I don't really understand why so you apply the heat it forms a shape and then you take off heat it like goes upwards. I'm still trying to figure that out. To to supply the heat to the flower I created a custom PCB bar with the ESP 32 chip so that I could connect it to the internet and like make this flower be remotely triggered. Here's me testing it with an oscilloscope to see the signals passing through. No, I think this video won't play. Oh, um, I tried as little current as possible. Just changed I think I have a video later of the exact numbers that I use. So, here, this is when I turn off the power, it kind of like, yeah, it's super eerie and I really like that because it has this organic movement, and the cool thing about this is that it is quiet. You know those like kinetic mirrors, like, and it's very annoying to have in front desk sometimes they want those kind of effect in a front desk but it's disruptive. So now you can have flowers blooming on some kind of installation and have it be totally silent. Yeah, and this is just, I was able to control the movement using a website because because of the ESP 32. So building on from this, I wanted to make the flowers look more flower like as you can see I put these pom-poms on because I wanted the movement to be more visible. It was very difficult to fill the gaps with any kind of material because like no wires difficult to solder onto things, it literally can't stick anything on it. And because of the movement, you can't really, you know, whatever you put in it has to be able to stretch and shrink in such a way that it follows the wire without like completely dropping off. So I played with resin and I failed a lot. I tried to just explain my process. I tried to form these bubbles, like surface tension bubbles using resin and cure it in place so that it actually becomes like a petal. And, no, should I try refreshing, do you think? Okay, some to that. Oh, maybe it's actually my silver. Oh, there it is. Okay, so. These petals have resin in them. The outside is night now and then I used it kind of like a bubble blower thing and filled it with resin. It was really, really difficult to do because resin cures and exothermic produces heat. And then when the night now why it receives heat, it wants to move. It was very difficult to make that work. But here you can see the power side. And here I'm like giving power to this wire flower and the wire is then heating up, which allows me to heat up the resin. And within the resin I put thermochromic pigment so it like you can see the color changing from the outside in. Yeah, so this process was really, really difficult. And here's how I did it. I made these wire loops and I had to kind of prevent it from shorting itself because night now is a live wire, then I created this resin bubble, surface tension bubble thing. Like I mentioned before it feels a lot because the night now will try to move and then it will break the bubble. So every time it's curing it will try to like untangle itself. But eventually I got it to work and you apply the pigment on top of it. And here is a video of a single petal. So I put a black pigment that turns transparent when there's heat and some other colors underneath it. So it's fixed at one amp and you need about 2.7 volts to make the petal move. At this point I figured out how to make the petal just like move in a very graceful way instead of just the eb movement which is also nice but just for this purpose I wanted it to move in a controlled manner. And here's what the colors look like just heating up with a heat gun. And with the board from before, the movement as you can see is very, this is in real time. So it's actually pretty fast. Thank you. It's a great compliment. Sometimes you can change colors. I also made a full case using that diffraction grade method that I explained earlier and this is the final thing. I didn't really explain this but it was a touch sensor that you can use to activate the flower. Yeah, and that kind of concludes my highlights from how to make almost anything with these five projects. Thank you so much. If you have any questions, you can go ahead and find our leader after this.