 That was easy. And the guy tapping on things over there is Tom Calloway. So we both work at Red Hat. I'm on a team called Open Source and Standards, and work largely with Fedora, and he's the Fedora engineering manager, and Raspberry Pi isn't really our job, but it's awesome. More relevantly, I suppose, we are theoretically finished writing a book called Raspberry Pi Hacks that will come out in December. And so the first half of this talk, I'm kind of glad that only like three of you have actually built something, because we're going to walk you through some of the basic Pi stuff. If words like soft float sound like they should involve ice cream, that's OK. Just like glaze over for those parts, and then we'll get to the part of the end where we show you cool things people have built. And that's when the jokes about Captain America are going to come back. This is just a picture of a guy with Pi on his face. And it makes me laugh, so I leave it there. I usually start with some history of the Pi, but how many of you went to Evan's keynote yesterday morning? So we can skip most of that because you heard a much better version from the guy who has the history. But I will show you this. This is the BBC Micro. The little computer he talked about that he based the Raspberry Pi on that inspired the whole idea for the Raspberry Pi. This came out in 1981 with a two megahertz processor, and you had two options. You had a Model A and a Model B, just like with the Raspberry Pi. You could have 16K or 32K of memory. I know. Never, never. Nobody needs that much memory. And this is an ad for it. And you can see it was intended for educational use, just like the Raspberry Pi is designed to. Let's talk about the actual little Pi. Mm-hmm, Pi. I'll let Tom go through some of the basic descriptions. Some of those pins are specific to various use cases. It's an ICC bus. I've done a lot on that. There's a serial control board on it. It also has some other connectors that are extension for the future. The only one that's in use right now is the SI connector for the camera. The reason being, it doesn't take any sort of component that has the standard cable. The employee right here is a Pi because the firmware on Pi has to now have to drive the R. So the only device that actually has a cord in the firmware right now is the Raspberry Pi camera. So you can't go and take apart the phone and start driving the Pi. So you have to be very careful how to write the firmware when it's not available. Unfortunately, it's not called a CSI connector because it gives your camera powers of zoom and enhance. That wouldn't be the case. It's okay because you're not trying to, you know, do too many crazy things because it involves other GPU power. One of the things that's nice about that chip is that it has proper support for the chip so that you can actually directly go through that hardware to be able to do a 0.5 or 2.10 ADP. So it's pretty powerful without the card. The first number goes, model 8 has 128 megs, that's model B, the current one has 512 megs around the same original model. If I have a Sharpie, I'll just scratch that out. Picture is a little old and it's worth noting. So most of the things we'll be talking about, things that you should do, can do, a lot of the projects are built on that more recent model B version of the Pi which also has some other cool additions like mounting holes which are super handy. So as you know, the Pi was designed for education which is super awesome. The idea is keep it cheap and then you can get it into the hands of kids. And for all of us, that's still super cheap because you have a monitor and you have a keyboard and all those things. Unfortunately, a lot of people have noticed that there's a lot of other things that you need that aren't always handy and there are ways to overcome these things and we'll talk about some of those. But the best part is, if you don't have a lot of stuff, you get to go shopping. And there are all sorts of places on the internet that will sell you all of these things and all the great toys that you can connect to the Raspberry Pi and all the things that we're going to be talking about. Adafruit is particularly fantastic and we talk about them all the time. And it sounds like we sell for Adafruit, but we don't. We just buy all of their things. Yeah, I want to cut. The biggest difference on Adafruit, the Pi is $39.99 instead of $35. But if you're already buying all the other things, you might as well just go ahead and buy your Pi's there and then you save on your shipping. Element 14 has all the cool stuff too. They're one of the main sellers of the Pi. SparkFun is really only useful for weird electronics parts. I kind of think of it as the internet version of what I would like RadioShack to be. And as for, oh, don't buy Pies on Amazon. That's why that bullet is there. They sell for like $50 on Amazon. My neighbor asked me the day, he's like, I'm going to get on Amazon and get a Pi. I was like, yeah, slow motion, jumping on him. And your RadioShack. RadioShack fantastically varies by the side of town. I was going to say by town, but not even. There are three of them near me. And one of them might as well call itself the Arduino store and another is a cell phone store. The one that is by the college with the engineering school, particularly fantastic. So that's some of the places you can get stuff. So let's get started. A few basic steps. Your SD card is your hard drive. That's where all of the important things happen. Well, not all of the important things, but many of them. And so you want to get the right one. And these are the steps we're going to go through. I'm trying to skim through some of this because I feel like you guys probably already know a lot of this and you want to see cool things. Most quality name brand SD cards that you recognize the name of are fine. There was a bug at one time with class 10 cards, which supposedly has been repaired. But Tom ran into like a week ago. On the other hand, there is one hack in our book that actually requires a class 10 card. So your mileage may vary. Yeah, that Elinix site is your source of everything that you ever wanted to know about anything about the pie. It's pretty fantastic. I've only found a couple of things that were a little out of date and it's a wiki. So I suppose the right thing to do would be to go back and update them. It will tell you that micro SD card with an adapter won't work, except it does. And that's mostly all we use. And I think that's what Adafruit ships you. So don't be afraid of the micro SD card. It's cool. You're going to talk about some of the display choices, like the one on your table. Take up on a VGA, what is this VGA? Is this a platform where one of the peers has been connected through a VGA micro SD unit? So that's what it's going to look like to see. So there's a lot that we're going to get help with individually from the line. There are also some fun creative solutions. One of my favorites is this guy who made something he calls the Kindle Berry pie, where he uses the Kindle for a screen. And the blog post is worth reading for the entertainment, even if you never intend to do it, because he just repeatedly says, this is a stupid idea. You're going to kill your Kindle. It's a stupid idea. But here's how you do it over and over again. The other cool thing is there used to be this phone called the Motorola Atrix. And there was this $500 attachment called a laptop that gave you a little screen and a keyboard and a battery and basically turned your phone into a tiny laptop. And now that $500 accessory is like $40 on eBay for this old phone, and it works great with the pie. And then you have a battery and a screen and a keyboard all in one. And I just got one for my birthday, and I've been laughing because I say not every guy could get away with giving his wife a three-year-old discontinued piece of cell phone accessory for her birthday. Such a lucky man. And you can play with touch screen. You can play with touch screen directly. It won't work with some of the Linux countries that are out there, because they don't go back. They drive directly to the video core libraries that talk directly to GPUs. So the display link stuff has no idea how to interface in the universe at all. But then you can have touch screen devices like this. We are opening from HDMI, and the accessories over here to get the desktop world list and things like that. There's also overlays you can get for free, or basically just a fly has to be overlaid, or I just screen, and it has to become a luxury. And some of these things are particularly like this, or based on our adventures even a year ago with getting stuff to work. I think Adafruit now sells a little tiny touch screen. It might actually be meant for Arduino. You can make it work. That's what you're here for, right? Well, there was that joke. Talk currently things engineering man. This is a 3.6 kernel. There are new kernel branches in the GitHub repository. There's a rather back on there, but there's not merchants in the link kernel. We hope someday this will be the case. So we will stop having to go back on the separate 4.3. But the new version of it can be maintained in the current. So basically you can get that code, call it, build it, and then you can run the make-mister-proper command. Which is so named. The kernel has the make-mister-proper in addition to the make-clean target because Mr. Propper is the name of Mr. Clean on the other side of the ocean. Now you know. You learn something a day. So now you have your awesome SD card. You got what you want to put on it. You should pick the right distro. We may be slightly biased towards PyDora, what with Red Hat paying our paychecks and stuff. We don't produce PyDora, I should add. It's a project based out of Seneca College. So we're not actually getting paid to work on it. We just like it because it's based on the thing we're getting paid to work on. But that said, we're also fans of using the thing that is best for what you're doing with it. And so if you're going to set up XBMC, for example, you should use RASBMC because that's what it was designed to do. Occidentalus is Adafruit's RASBM-based distro. We're first calling it the distro for education, but if you go read their page, it basically says, what this is really for is hardware hackers. And if none of the following words make sense to you, perhaps this distro is not for you. But you have many, many choices. And this is a small fraction of the number of distros that are available in versions for the Pi. And I originally put Plan 9 on this slide because I thought it was amusing, and I have discovered that it is incredibly popular. But some of them get specific. Qt on Pi is for Qt apps. So whatever you want to use, there is one for it. But we'll tell you things about PyDora because it's awesome. I specifically like when I first read the list of features. Because at some point, Linux is kind of Linux. The one that caught my eye was if you're running Headless, you never have to attach a monitor at all to find out your IP address, because you can put this little file in there, and it will blink out the IP address through the LEDs and then read it over the speakers in this lovely British accent. Which we would demonstrate for you, except that I didn't bring one of those. We brought the little screen, you can play with that. At one point, I'm gonna say back about January, somebody created a bootloader. So that you could have some choices, and it happened literally the day I gave this talk for the first time. And so right before I gave my talk, I'm like, stick it in the slide. But now, there is Noobs, which is short for new out of box software. And what's great about this is you get all of these choices at first boot, and then at some point in the future, when you decide you wanna use something else, or you work something up and you just start over, you hold down Shift at Boot, and you get this screen backing, and you get to make another choice. Then like us, who have 47 SD cards, and we stick them in various machines to try to figure out what's installed on them at any given time. You have a couple choices to install it. Of course, you can DD at your command line, which is probably what a lot of the people here are inclined to do. There's a handy dandy arm installer packaged in Fedora, and if you don't have to use it to install PyDora, you can use it to install all sorts of distros. But it's a one-click handy dandy, and I'm a big fan of that. On a Mac, you can use the Raspberry Pi SD card builder. If you're using Windows, I'm not really sure why you're here, so we'll skip that part. Or you can just buy a card that is preloaded with a distro. There are several vendors that sell several different distros, usually Raspbian, already on a card, ready for you to go. We didn't add, you should probably take into consideration what you're gonna do with that Pi and how much space you need on said SD card, and how big your distro is for that matter. So power, because it's electronics, it needs electricity. Five volts of it. Gonna talk about power. Sorry. So it's about five volts, not five. About a quarter volt of tolerance either way. Yeah. But you do want to have a few reliable, because there's no battery, the Pi is dependent upon your life. Now, you might think, hey, I've got this awesome phone, and this is what my phone charger is in there, and what you will discover, is that you can play with the phone, and that's what most of the phone chargers can do. Well, correct. To find for your phone, you just need to hold the continuous great voltage to your phone. The charger can go all the way down all over the place, and your phone will look at the charger slower. But for the Pi, you need that to be regularly clean. So your phone charger is probably, it's not the best way to want to use it. You want to go out and get it more dedicated, it's a little better to build chargers for that. And the irony is, is that you have to get it back to the phone chargers, so. And then, of course, we have to know why you could use iPhone in case it's the wrong way to pass it. It's not going to be possible. You have an iPhone charger, you have a red connector already, so. We should skip that and see if some conference we can find somebody to try to plug their iPhone connector into a new Pi. Your random behavior that I'm really trying on to do this, I try to only do it. Yeah, that said, we have a guy who wrote a section for our book, and I'll show you that in a little bit, and that's all he does. And he came over to my house to spend two Saturdays tinkering on things, and I was like, what are you doing? He's like, this is all I ever powered off of. I was like, all right, whatever works for you. He also, so I have a cell phone charger brick. It's about like that big, and it powered the Pi for 16 hours when I forgot that it was on there and running. It's kind of amazing. And mine was, I don't know, like $120 or something a year and a half ago. My mother-in-law gave it to me. Now they're like 40 bucks. My friend, however, he's buying them off this site that's dx.com, which is where he finds all of his amazing little electronics, and he gets them for $15 now. So if you would like portable power, $15 cell phone charger, he gets the smaller ones, he gets five hours off of his because he's mostly using them for aerial photography, which we'll get to, but yeah, up to 16 hours, kind of insane. And while we're talking about power, we'll talk about this little guy. This is not where you put your thumb to plug your Pi in. That's how you break it off and that's what you search for when you break it off and want to solder a new one back on. This is cool. So where those two little pins are that are circled, that is not, those pins aren't on your board. You have to add those two little header pins, but then if you do, you sort of have a power switch. You short those out and your Pi will reboot. Or if it's off, it will power on. You have a set of LEDs that can tell you all sorts of things about why your Pi is not coming on when you think that it should be. And what's super cool about the Pi is you have your GPIO. GPIO stands for general purpose in-out if you haven't made friends with it before. This is how most of the super cool projects get made. The pins are slightly different on the older board. So depending on, you want to look up what model you have and where the pins are and so forth. There are three volt, not five volt like Android and there's no overvoltage protection. So try not to short things out because that's not cool. Anything else that we should say about the GPIO in general? And you should buy yourself some male female jumpers and I'll show you why when we get to that picture. It's the horrible, horrible things I've done. This is super handy. This guy created this little thing called the Raspberry Leaf to lay on there so that you don't have to go crazy trying to figure out which pin is which. And at Open Hardware Summit last week, we got little metal versions of this, which best give away ever. That's okay, you're on it. That's a Pi. If you're going to want to cross the one G, that's very well, you can set that up and very quickly have a functioning on our own, either free out of the mod or free out of the mod. So now that we've set a lot of words that you're going to forget and have to look up again later, let's talk about the cool things people are making with Raspberry Pis because it's for education or grownups who want to make fun toys. We did not talk about cases. You should probably get or make one in some fashion. Leaving them laying all over your dining room table is a good way to get your four-year-old to wander off with one, not that I know anything like that might happen. You can 3D print one. In fact, one of the better cases we have came out of the 3D printer or you can sell them out of Legos, which is my favorite approach. Unfortunately, I do not have any dimensionally transcendental Legos unless you can't actually travel in that one. Alas. This is in the book. This is a good reason. If you like Legos, you should check out the book. This is my diagram of how to take two layers of the little half-height Legos and make a base plate because a Lego pip, the little round nubbins on top are eight millimeters if you do one of the little squares around that. And if you do that by the math of the pie, you need a nine-by-thirteen base plate to make a case. There is no nine-by-thirteen base plate. You can make them on like a 15-by-15 or something, but then you don't have a tiny case to go with your tiny pie. There is also a place that you can buy this handy kit that is already made, but I'm a little Lego obsessive a lot. And at some point I said, do you feel like you go to Target and you're looking at the wall of Lego and the death star is like $500 or something? I'm like, I'm pretty sure my parents were buying me $500 Lego kits. When did Legos get so expensive? And so I actually went back through to the beginning of Legos and priced out price per brick of a bunch of sets since the beginning of time. It turns out Legos are not getting more expensive. They're just cramming a lot more bricks into that box. And so I figured out that 10 cents per brick at the end of this story is a good price. Below 10 cents per brick you're doing pretty good. This kit, while awesome, is 24 cents per brick. So it's open source, the directions are online. You can have other colors, you can go make your set. You can, Lego Digital Designer is a thing you can download, so you can design it before you build it. You can get little hinged doors so that you can get to the ports, you can get little transparent bricks, you can get to the LEDs, and now I'll stop talking about Legos. We get, I should submit a whole talk about Legos one day. This is the long-awaited, fantastic little camera module. If you haven't seen it, that little green board part of the camera, it's about that big. It is the tiniest, most amazing little, you can dazzle the neighbors. We were in the cul-de-sac with the kids playing the other day and my neighbors were all like, that's a camera? Like it takes pictures, like for real. Really? Yeah, it's awesome. And the coolest thing that I've seen it used for, I'm sorry, Evan, I like your aerial photography picture, but this one's cooler. This is the guy I was talking about that's been so super helpful and plugs all of his pies into his laptop. Is with a group called NC Nearspace and they've done seven or eight launches now, I think as high as 80,000 feet. And so he's helped us write about 11 pages worth, I think, about the details of how you do this and it's pretty spectacular. This is how you should not connect things to the GPIO. Unless, in a pinch, you really, really want to and all you have is some alligator clips. And so what you do, you look very carefully and make sure that nothing's, no metal-touching metal. This is the first thing, one of the first things we came up with and we were like, what can we do with this thing? We can rip a Game Boy apart and shove a pie back in there. That sounds like a good idea. It doesn't really fit that well, as it turns out. It comes pretty close. You gotta start, you gotta trim it out some plastic. It'll get in there, but it's hard work. Also, you need a tri-tip screwdriver to get that thing apart and I do not have a tri-tip screwdriver. It took us like an afternoon in the Red Hat Engineering Office to find somebody with a tri-tip screwdriver, but it was worth it. So this is a little screen that Adafruit sells. The other thing that I think is fun about being a little pie tinker is that you don't have to read the directions and sometimes things work anyway. Those wires that are so cleverly attached to the pie actually require between six and 12 volts and that's not supposed to work. But it does, like you can place hatchers all afternoon and we might have. So if you add an extra letter to Pie Boy, what you get is a Pip Boy if anyone was a fallout fan and a lot of people immediately looked at the size of the pie and the size of their arm, not my arm, I have little child-sized wrists, but other people thought, hey, I could put that on my arm. And so one guy did. He used those, if you're familiar with Instamorf or some of the products like that, it's little plastic pellets about the size of very small pearls and you put them in hot water and what you get is a clay and you can mold it to anything you want and then it hardens and you have plastic thing that you made. There's something similar now called Sugru, but Sugru comes already as a clay, you don't have to do the heated up part. And so he built this for Halloween last year and shorted it out two hours before the party and then was like, I'm wearing it anyway. Still pretty cool. This is Tom's favorite project, so let's talk about it. Yeah, the other thing to do is to put the pie into a reservoir. It was pretty much what I wanted to do. This thing called reservoir pie, that has pretty much every emulator known as man off the side of it and there's a helper strip that will automate the entire process. You basically just pick it in and let it go and it builds all the emulators ever and runs them all like a pie and most of that works really well. And you can get a lot of the joy that you can have an authentic experience of playing the same console you were about to put about the original connector and the person over at the USB they actually show up at the USB USB or if you want that real authentic experience you can get USB to actual weird providers and connectors and connectors and often use your actual controllers if you're weird like being in a stage over a game or whatever. But for a while there, the sound was pretty awful in there because the also driver was not so good but the also driver has gotten a lot better with him and now the sound is pretty much perfect. It can emulate everything. Some of the specific tips in the old devices was to pretend though that people are not rendering that's not gonna work in the emulator very well but SuperMemory's demonstrated here was great. I've heard reports, although I forget to try it, that everything all the way to play stages one and even some of the stages two games will actually play in the final. We also learned at Maker Faire that 11 year olds of 2013 are not amused by actual Super Mario 2. Not at all. Child after child came by and we go, can I play Mario? And be like, yeah, you can play Mario, give him the controller. They get past barely the first screen and go, your Mario sucks. Throw down the controller and walk away. Every one of them. Like this wasn't one kid, it was every kid who walked by. Speaking of kids, let's talk about kids. Since this little thing was made for education, kids are a great creature to educate, I suppose. I think that's what we're supposed to do as parents. Yours are still small. There's a chance to recover. This is spread from one of my favorite nerd books for kids. It's called Super Scratch Programming Adventure. And if you're not familiar with Scratch, that little cat helps you learn programming skills by those little puzzle pieces at the bottom right. They lock together, the pieces of code lock together so that you can actually see how things work. It's pretty cool. And so the way this book works is on the left you have a comic book story that goes through the book and something happens at the end of the page and then what you do on the right side and Scratch solves the problem. And at the end of the book you have a video game you can play. And so the first time I gave this to my daughter, she was, I don't know, five or six. And she poked around and scratched for a while and I gave her the book and I thought she was doing stuff and this is the part where you should be an attentive parent. And then, I don't know, a year later, six months a year later, she's like, I'm bored. And I said, well, why don't you go use Scratch? And she goes, I don't know how to play that game. And I'm like, it's like a game. Like you make a game with it, you're just like, what? So when you give this book to your kid, you should perhaps help them with it. They also have little fingers when you need to plug tiny things into places. Another fun, oh, I should add, if you want that book or Python for kids is awesome, NoStarch loves kids and there is a 30% off coupon in your Linux Con bag for NoStarch. They have a whole series of kid books and we met the founder of the company at Open Hardware Summit last weekend and he said they're trying to really expand the kid line and focus on kids. He's doing some cool stuff in New York with like a sort of temporary weekend hacker space for kids. So sync description. This is one of the things that I wanted to do because back in the day, I was constantly running SETI at home and if you don't remember SETI at home, it basically ran as a screensaver when people use such things and searched for alien intelligence. Because why not? It was the first really big distributed computing project like that and it has grown up and there's a new program called Boink, Berkeley open infrastructure network computing, I think. And that's what SETI at home runs on now and so you can set up a pie to search for aliens or you could make a whole pie farm to search for lots of aliens. And if you did that, you could use a 50 by 50 Lego board and fit like four by. This is another interesting project. This is like the dedication thing and you can actually help this guy. So this guy really, really liked Stargate and decided that he wanted a functioning Stargate. Not like functioning, functioning, but functioning. Not like functioning, functioning. And so they're making some good progress. This is not theirs, this is the screenshot but they're making good progress on making the ring and he wants to use a Raspberry Pi to make things flash and spin and whatnot and so they're asking for help. So if you wanna help him make a Stargate, you should go check that out. He just updated the blog. They've been taking it to like Japan, Comic-Con and some assorted other events like that to show off where they are. Pi FM is a fun project that turns your pie into a radio, so FM stands for frequency modulation. All that means is changing the positive to negative signal like 10 million times a second and your pie's clock manager can produce any frequency you want by doing math and dividing the system process or clock down to any rate you want and so these guys took that and basically turned their pie into a radio. They'll play any sound file you want and if you want to slightly illegally depending on your jurisdiction boost that signal you can attach a little wire. Antenna, as we call it. Anything else cool about that? It's a cool project. You should Google Pi FM and check that out. It's not gonna drown out the radio. Yeah, the other thing you could do, they've, did you do that? Not for them. Oh, okay. He just sold his house and I was like, wait, did you do that? The other cool thing that you could use this for if you were willing to do the whole slightly illegal boosting the signal thing is that we have another hack in the book that I didn't put in here for doing controlling your Christmas lights with the pie. You attach a little relay controller and you can control about up to 17 strands if you get enough relays on there. And so then you could, you've seen the Wizards in Winter video where the guy like animated his whole house in lights and all you could pretty much do that and broadcast it over the radio for people driving by so that you don't torture your neighbors with speakers. One of the first things, this may be the very first thing we did with the pie. We set up a photo booth at South by Southwest a long time ago. I don't know, I'm starting to lose track of conferences. And so that's Tom in the Penguin suit and me at the monitor. And so there's this fun little script and all you have to do is press enter and run it and it creates this QR code with, it takes the picture, creates the QR code, creates this little webpage and then people can scan the QR code and they get this webpage where you tell them about Fedora because there are no ulterior motives here and download their picture with the penguin. And everybody loves a penguin except those same small children who hate Mario and they just wanna punch the penguin. I wore the penguin suit for a while at a, where was I, like Lord of the Flies children swarmed me and started beating me. It was ridiculous. The most recent thing that I started working on is this project. I'm a costuming kind of nerd. And so on the right, that's my Mass Effect Captain Ashley armor. And the guy, if you don't know this game, he probably looks, I realized that at that size he looks freakishly deformed and not okay. That's the guy who's the voice of the character in the video game and somebody made him this armor that's half paragon, half renegade. And so that's why he looks weird and has yellow contact. And so I realized it would be super cool to wire up the camera and a battery pack and put it through a little hole. These costumes were made out of floor mat foam. That's about this thick. That's what that is. And so you just cut a hole in the foam. This is my prototype where I was not so good at the exacto. And you wire up the camera with a continuous stream and from over there, it looks like there's a hole through me. This is just a brief blurb about XBMC which we've joked about a couple of times and Evan joked in his talk too. I think I said something in the preface to the book that all but one pie has been used for XBMC because it's all anybody talks about on the internet. But the reason it's a good example is because of this guy I found down in the comments on a post, I think on the Raspberry Pi blog about XBMC and he's like, I've pretty much just opened this box and did it. And I was like, that's the open source dream. It finally worked. And I had my seven year old install it the other day. She got impatient at the end because it was not being speedy and we got down to let's go ride bikes but basically a seven year old installed XBMC. That's pretty cool. What is not as easy is putting Android on your pie. This is a really bad idea and yet a lot of people wanna do it. There's a wiki, they have an IRC channel, there's some people working on it and it will boot and you can use it and that's the slowest Android you've ever seen in your life. You have to use Cyanogen Mod 7 to 9 doesn't really work. And if that is in your aspirations you just go to the wiki and you do it. Good luck with that. I wasn't gonna do that, but man. Let's talk about arduinos. Other words that start with A. This is a little board called the a la mode because there's ice cream on your raspberry pie. But what it lets you do is attach arduino shields to the pie. And so if you have a collection of arduino shields sitting around you're going, sure wish there was an easy way to connect those. Done. This one's made by Weilum. There's also cooking hacks. It's another site that makes a bunch of stuff for the pie and they have a version too that's slightly different. This, if you're the sort of person who has a spouse who would buy you ancient electronics for your birthday and not get killed, then this would be an excellent Valentine's present. This guy built this for his girlfriend and it worked because now she's his wife. It's not just an R2D2. This is a raspberry pie controlled, bilingual, voice controlled, face recognizing, distance recognizing, motion detecting, everything R2D2. And of course he records and plays back messages because that's kind of what R2 does. Love that thing. I want one. More tiny gaming, as you can see from the cigarette lighter, ridiculously tiny gaming. That's pretty much what it is. You just have to see that picture because it's just, it's adorable. And you can go to the blog and this is how he describes how he did it. I love his wiring diagrams. He's like, I scribbled this on an napkin and I scanned it in for you. Done. Fish Pie is a pretty cool project. It's a project to build a marine unmanned surface vehicle. They intend for it to cross the Atlantic. This is one of the earlier prototypes. What I love about this is I said you could come up with a case out of Legos or just about anything you want or say a piece of Tupperware. That's the waterproof housing. I went and looked today to see if they had changed anything. They have a new hole, but it's still in the Tupperware which I think is awesome. But Tom came up with a better plan if you would like to wet down your pie. I know this is a terrible plan, but it works. I'll let you describe what you did your electronic. So there's a pink gold layer that's pink on top. That's advertised. No, I'm sure it's just a zero. It happened and then I powered it off and I threw it in the water. And it ran just fine. There's a video of it on YouTube. It was a bad terrible problem video. And then the most important part that was when I put this out, it came out dry because the water wasn't actually at your width at all. It wasn't like it was just not getting in by the bit long and it comes out in no good. Now it makes it very, very, very chalky. The one that I think this is pretty painting, but the one that I think this is rather the capstone I think it may look like I don't have this record, so I'm curious about that. But it was really cool. Okay, I think it worked for us. I think it worked for us. I can tell that maybe you put me with it. I think it's really what it was because we're very defined and more accurate. We were discussing this in one of New Orleans fine restaurants yesterday over lunch and a guy at the next table was like, excuse me, are you talking about putting your cake in water? He was highly, and then I heard his wife say something about, there's a girl at that table with five men. What are you talking about? It was hilarious. So then we started talking to that guy. It was great. This is the last project I'll show you and it demonstrates another principle which is that every good idea I have has already been done on the internet. We, a lot of this books outline was born in the most wonderful bar in the world in Paris, which if you're the kind of person who would like to walk into a bar and see a Millennium Falcon on the wall, then this is your bar and I'll tell you all about it. You just come up after and you can hear the saga of the greatest bar in the world. But one of the things they have is diesel things, which I call the Pizza Hut table because that's the only place I ever saw them where you have player one on one side and player two on the other and it flips back and forth and you play all games and I'm like, we could build this with a pie and Ikea and stuff. And then of course I Google it and somebody already built it because every good idea I have somebody already did on the internet but still want to do it. And that's about it. If you would like to download, not exactly these slides but a previous version of them, there is that link at the top. It's mostly missing just that aerial photography picture but I'll upload the new one so that you can have them. And then these are some other resources. The Beginner's Guide is good if you're just getting started. That's the link for our book that comes out in December and our information so that you can yell at us on the internet. Anybody have any questions? Cool projects they want to tell us about? Did you bring beer from your Raspberry Pi beer calculator? Thanks for coming. You mean in the sense of power? They only are intended to go with low power devices and so when you play a high power device, if you had the effect, it would need to be low power or high power. And we've talked for several pages in my book about this initiative but basically what it means is that the USB port on your laptop can power up to the low power and the high power devices and they work just fine. Most of the high power devices that I've ever seen they don't actually show up with low power devices when they first detect and then immediately when they start to be used, they show up with a high power. Now because the USB ports on the spy are really only assuming they're ever talking to low power devices. When you plug in a high power device with a wireless, it'll work for a second and then it will stop working. Or if you plug in something that's too high power or higher power, it'll just turn off. So what the trick to that is to always power up. If you plug in an extra power hub in the USB port, you work around that up to there. There are a lot more USB types of things that work in the USB, but when they revive them on a USB stick, they fix quite a few of the USBs as well. I also forgot to add, I have not a ton but I have some PyDora t-shirts if anybody wants one and all the PyDora stickers in the entire world and possibly some Raspberry Pi stickers, I should look. Yeah. Oh, so the picture that I showed from the Near Earth Orbit photography, they actually had three cameras on board. They had their Raspberry Pi one. They had, wasn't a Lumix. Maybe it was a Lumix, but something point and shoot of that size and then this sort of cylinder camera that we're all running through the USB. All right, thanks for coming.