 Do what I tried to do for Linux and do nMap and then type in the website then run. And then that starts and then it sends the packet to the website and then we're just going to have to wait and see what happens. When I did it, I installed it with sudo and then I didn't need to use sudo just for normal scan. Now there are other types of scans which I'll go over later which you might need sudo. Okay, it actually happened. So once it finishes scanning, this is what pops up. So it gives you all the ports that are open, the major ports. It tells you their states, whether they're open or closed. And then it tells you the services they're running. Now states, they can either be open, closed, filtered, unfiltered, open filtered, or closed filtered. Now open, that's the good ones, that are good ones. They're active and they're available for connection. That's the one that are most exploited. Now if they're closed, it means that the port responsive probe, but it most likely has no service running. Now filtered, that means there is a firewall there, so you can't access it. And unfiltered, it means that the probe, it reached the website, or it reached the website, but it can't determine if it's open or closed. Fortunately for just a simple scan, it only shows open or closed, or in the usual case. And yeah, I actually need to see it out. So multi-scan, it's really simple. You just need to use multiple addresses or multiple IPs. And if you want to include a range of IPs, instead of just putting commas and having to type in every single time, you can just use this to specifically choose which IPs you want to scan, or you can use the 0 slash 24 to scan all 255 ports. Yeah, okay. Now back to this. You can either put in the URL, which I did the first time, or you can put in the IP address. Now, if you don't know the IP address, but you know the URL, then you can use the URL, and it actually gives you the IP address. So if I try the same thing with the IP address instead, then the same thing should pop up, but it's going to take a second. Now aggressive scan, that's a step up, that's a slightly more interesting part. So if you add the script line A, it gives you a lot more information. It does a trace route for you. It gives you the most probable operating system. It tells you the service versions of the services they're running. Now the problem with this, well, as you can see, even with a simple scan like this, you're not asking for any extra information. It takes a long time. So if you're going to use aggressive, it's going to take even more time because you do a trace route as well. So depending on what you're trying to use, or what you're trying to scan for, you can use specific scripts, like if you just use a capital O, it'll give you the OS without doing the trace route. SV, it gives you the service version, and there are a lot more scripts. So port specifications, so there are 65,535 ports. It would take way too long to scan all these ports. So Nmap, it by default scans the top thousand, so the most popular thousand ports. And if that's taking too long for you, you can use F, which now that I think about it, which I should have done, it just scans 100, so it's 10 times faster. Now if you use the lowercase p, then that lets you specify which ports you want to use, or which ones you want to scan. So you can scan anyone from one to 65,535. Five minutes, oh lord. Okay, this is the more interesting stuff. Okay, it's finished. Just to get back to this, first time I use the URL for insecure.scanme, and then this time I use the IP address. Now if you actually compare, they should be the exact same thing. Which they are, Elite, Close, HTTPS, 3137. So it doesn't matter whether you use the URL or the IP address. Now all of this, it's really simple. You're just scanning something, you get information, whatnot. Now the question is, how this actually helps you as a pen tester, or a system administrator. Okay, so depending on how they're configured, they can choose to block out certain things. Some firewalls, they can choose to block out packets that are too big. So if you use MTU, which stands for Maximum Transmission Unit, I think, and then you put a number after, then you can choose how big the packets you send are. So in this case it would be 8 bits, and then you put in your URL or IP address, and then it sends. Now ST, that's a relatively interesting one. It actually stands, or it actually means idle zombie scan. And that basically, well to use this, your zombie has to be in idle mode. You can't, and then ST, the third one. So that basically uses a zombie computer, and then you scan it by bouncing your packets off of that zombie. And then the one after that, the PN and Spoof Mac, that means it just gives you a random Mac address, and then it lets you Spoof using that address. Now you can look up a lot of this online, especially on YouTube. Cali, pen testing, all that. Now after you find these vulnerabilities, it's up to you whether you want to use it for the good or for the bad. Whether you want to exploit it or to help fix those vulnerabilities. Now Fyodor, the creator, he actually goes in depth about how to use NMAP for collecting data and how to contact the U.S. Department of Defense. And you can actually find this quickly on YouTube, just look up Fyodor, DEF CON 16 NMAP, and he does a brilliant presentation on it. And again, everything I covered, these are all the scripts. You're more than welcome to memorize all of them. I wouldn't recommend it. I'm not doing it. Credits. For Fyodor, that's the creator and his insecure.org, the websites. HAC5, New Boston, they're really good for introductory lessons on NMAP. We survived. Do you have time for any questions? I don't know. Do you have time? Yeah, we got time for a couple more questions. Cool. All right. Just a couple questions. I'm going to walk the mic back to everyone. All right, here we go. So if I run the NMAP scan on, like, say, port 80 on a specific server and it says closed, can you tell me what that would indicate versus, like, say, that it was said filtered? Oh. What did you say, Scan? So, yeah, I'm scanning, like, just to check the service availability on port 80, and it says closed. Can you tell me what that indicates? Okay. So closed, that means, let me go back to it. So closed, it means that you send the probe and the port responds to the probe, but there's most likely no services running. As opposed to filtered, there's a firewall and the probe can't get to the website or the server. Thank you. Anyone, any additional questions? All right. Thank you, Matthew. So good job. Good job with the NMAP stuff. There we go. Can you hear me? So you're at the next generation track where kids tell us things about how they're smarter than us. And before we get started on the talk, have any of you guys gone down the hall to the next generation playground to see some of the interactive stuff going on down there? Perfect. A few of you. So that leaves room for more people to head on down. So we're going to have some people start off and tell you about the next generation playground. I guess Gabriel starts, or already. Well, here we go. Hi, I'm Avni from Kids on Computers. I just want to tell you a little bit about the playground. If you haven't visited yet, we have four stations, four hands-on activities that you can do at the playground. We have the Edison Robot where you can learn to program with Python or block programming. We have the JPL Mars Roeve that Gabriel is going to talk to you about. We have learning to program with Scratch and learning how to install Linux. So, and there's prizes if you do all four stations. So come by and you're welcome to come by anytime before six. If you have a break at some point in time, just stop on by and there's a lot of people there to help you through the stations. And I'm going to turn it over to Gabriel who's going to talk a little bit about the JPL Roeve that he's brought here. Thanks. Hi, I've seen some of you have come by already. How many folks have been able to take a trip to Mars so far today? Good. More than half the room. What do you think? Was it fun? Yeah. Yeah? Do you think that's kind of the future of how we should be looking and exploring things? In that way, awesome. Good. So for those of you that haven't, please come over and check it out. We'll show you also Roeve, which was a rover that will be open sourcing when we're complete, but made up of 3D printed parts, raspberry pi powered and all of that. So I would love to see you. So thanks a lot. Perfect. Thank you. After this talk is over, feel free to go check that out. So the next talk is the next gen journal with Sophia and David. You can guess which one is which. And without further ado... Okay. So hi. I'm Sophia Mercado. This is David Tabasquez and we're both seniors in high school. And I'd like to start out today by asking a few questions. So how many of us use notebooks? So how many of us use notebooks on a daily basis? How many of us have laptops? Okay. So from these people, how many of you are able to directly use your notebook and if you have an e-notebook then are able to modify it without Wi-Fi enter directly and customize it to personal style? Okay, so a couple. So our solution to this today is red notebook. It will be focusing on implications in education, mainly today. So we will be covering what is red notebook. We'll learn about it. We'll be breaking down specific functions. We'll have a demonstration for you to be a walkthrough. And then from that we'll allow you to have a hands-on activity that will allow for practice. And at the end, if you have any remaining questions we'll have a Q&A session scheduled. Okay, so we're going to talk a little about red notebook. So you guys know what we're exactly talking about. So red notebook is a graphical diary and journal helping you keep track of notes and thoughts. It includes calendar navigation, customizable templates, export functionality, and Word Clouds, which we're going to want to, which can really help you on the program. We will also show you how you can format, tag, and search for new entries. As we said before, everyone uses journals, but nowadays with new technology coming out, laptops, the traditional practice of long-hand writing a journal, of reporting what you've done, your feelings, and just how you want to express yourself is getting a little outdated. Almost all of us here is most likely we can type faster than we can actually write. With open source programs, it gives an opportunity to actually look into new ways for us to express ourselves, learn, and actually improve our own abilities. This is what Jedrick sees first thought when he was creating the red notebook with Python. Okay, so we're all going to download the program. If you guys can go to http backslash, backslash, red notebook, sourceforge.net, backslash, you can download the program. If anyone is not able to log into the program with internet, we do have flash drives that provide us with Mac, Windows, and Linux operating systems for you guys to download. Okay, if you guys are already on the website, we'll be downloading version 1.15. This is the latest installment of Red Notebook, and there are future updates coming up today which are going to have more improved programs that we're going to talk about right currently. We'll give you some time to look it up. So how are you guys doing? Okay, let's go. All right, we'll continue. So we're going to go over some of the basic functions. There are many functions available for this program, and we're going to highlight the specific ones that we see are the most powerful and most useful for improvement. So the program does contain hashtags. We've got one more that actually means hashtags, but if you're familiar with Twitter and other social media where you hashtag to actually mark and locate a specific topic, that's similar to the function it has. You can also format your text, bold, italics, underline, enter images, files, links to websites, links and map addresses to recognize automatically. So you can connect back to it with your own account. Spellcheck, live search, automatic saving, backup to zip archive, word clouds, which Austin uses the words that are most commonly located in your entry. Templates, export in plain text, HTML, late text, or PDF. The data is stored in plain text, requires no actual database. So this is how you can make journals on the go, write whatever you want, save it, and then continue later on. Currently the program is available with 30 languages available for translating, and we'll go over some examples of how you can actually do this. Okay, so we're going to go in more depth with hashtags. As I said before, hashtags are just like how you use social media, a way to mark and locate a specific entry you have previously. So they allow the user to set a specific tag for a journal entry, makes it easier to call back later information. It can be used to sync exporting features and exchange journals with others. Advanced tagging mechanisms allow you for sub tags. For example, say you just watched a movie, and you want to put hashtag movie, your entire entry journal will be reflected upon that hashtag. We can even make a sub hashtag for it, which is, for example, how we have Zootopia. So say, for example, someone was a blogger. He or she can use Red Notebook to create their blog for their entry of the day, and say they're watching the Oscars. When they first put the entry, they would end it with hashtag Oscars 2017. And say they wanted to say who the winner was, just keep notes. So it was hashtag Lalaland. But you know what happened with the scene? A few minutes later, the winner was actually someone else. You can then change that hashtag and have Moonlight, which was the winner. So by having this program, you can either alter what you have written already or change it up later. And it keeps you, it allows you to bullet point what you have already, and it's built upon that later on. Okay, LiveSearch and WordCloud. A unique feature that we have is LiveSearch, which allows the user to browse and choose words based upon frequency of journals. Everything you're writing in your journal will appear in your WordCloud, which will be directly to the left of the icon screen if you guys have it open up right now. That will show you the frequency of where you've been using and how much time you've been using it, and it will be, the size of it will show how often it's been used. This is very important so it allows you to know what words you've been using for your journals and help you pinpoint what exactly you're writing in that entry. Also, with the WordCloud feature, it acts as a glossary of all entries you've been making. It's easier to navigate between entries by keywords. Say you're writing a lot, but you don't actually want your whole WordCloud to be clogged up by just simple words that keep repeating. You can white-list them, which are words less than five letters with a command log of preference, dialogue. Or if you want, you can just go right over it with your mouse, right-click, and just put hide. It's very helpful if you don't want to get so much information just showing up on the left screen and to keep various stuff organized as you go along. Now we're going to talk about the shortcuts. One of the most helpful and most important shortcuts you're going to be having is ctrl-8 plus h. If you do that right now with your program, it will send you to a page where it shows you the complete list of commands, list, functions that the program can provide. It's completely organized following down from format, structure, insert, insert, files, export, and any other modifications you want to do. I highly recommend you guys to look at it and go in depth with it. It will show you more of the possibilities that this program has to offer. Going on, some of the more general ones that we find is ctrl-f, find, export, ctrl-e, and so on. For navigation, since we're going back in a linear fashion, either forward or back, past day, present day, or future, to set little markers to know what you're going to write up, that's where the navigation commands come into play. When you're also formatting the control for this, you can also go from ctrl-plus b, i, n to stand for bolding, italics, mono-space, and underline, when you're doing your formatting for every entry. Now we're going to show you guys an example of what I was talking about. It may seem a little fast-paced, but we're now going to take some time and actually show you what an edit mode looks like and a preview mode. So currently we're in the computer science principles class and we're learning about basic computer science terminology right now. So what I did to show how this can be implemented in education was get the vocabulary from a unit that we were learning from and I pasted it onto our, into Red Notebook. From there, I modified it using the ego sign so that you can change the font size. You can also insert quotations and asterisks to modify the formatting so you can make it italics. You can make it bold. And with this, a key feature that I like about this is that normally you won't be able to modify vocabulary on your own unless you open up your own page. But with this, you can insert an example from online. You can get the URL and then you can put it in for insert as a link and I put it in as an example of the one-pages. At the time I didn't know what a one-pager was so I found this useful to have a visual as I'm a visual learner. I also entered another picture because I didn't know what these on-air were. So including links out to sources and answers your learning experience and the program also allows for customization of entry. Here you'll see that edit mode doesn't really have a clean cut version so there's another mode called preview mode and from there it gives you what the what the journal entry would look like as a preview and what you would export it as. So here you can see the use of tags left. I put in hashtag CSP for computer science principles and the use of tags leads to customization. It allows for rapid searching between classes if you want to and here you can see the inclusion of visual and enable visual learners eye to better guess topics. So from here we'll be moving on to the demonstration so it will be helpful to have your render book program open and you will follow our walkthrough as I guide you through it and to look out for as we're going to have hands-on activity I am going to show you how to change font overall or using that operator I'm also going to show you how to have general formatting such as bold and my partner will demonstrate how to export. So when you first open up friend notebook the first thing you'll see is this preset text you'll see preview tags save and export and things you can do with it second day for you that shows you how you can use it and personally so I'll show you how to okay so you can click these buttons at the top left or back forward and today so back goes back one day forward goes forward one day today goes to today and from there we'll start at the top left hand corner with journal so here you can see you can make a new journal you can open up a previous journal you can save your journal you can save as export back up statistics or you can quit so with backup it's important because sometimes you need to have a second file for your journal as backup so it'll save as a zip folder and from there you can choose where to save it and what to have and another key feature about this is statistics as a student I think it's important to be able to know your word count because sometimes there are times when you can't exceed a limit or you have to surpass a certain amount of words so here you can see the amount of words that I have the lines, the amount of letters and overall you can see the amount of words per in the journal the distinct words edited days the letters between first and last century average numbers of words, percentage of edited days so that's just statistics in edit at the top left hand corner you can undo, copy you can go full screen, you can find spell check and preferences spell check is one of the key features because it allows for you to spell check your work and make sure you don't have any errors so you can turn it on or off using F7 if you want or you can also go to preferences which is something to look out for so it shows you the closed system trace which is between edit and preview mode automatically and these things our purposes is edit font you can choose what font you want such as these things right here or the size so you can choose which size you want and press ok and from there here you see what to exclude from the cloud so as my partner said you can whitelist words that are five letters or less or just words that you don't want to be shown and there's also a help button that my partner will go further into so as you can see red notebook has a calendar characteristic that allows for rapid moving between days it gets structured to the app and thus therefore you can switch between days and this comes in more useful for when you use your red notebook more frequently but for our purposes I only extracted a few entries and you can see the tags so on my screen you can see cipher csp data decryption encryption family hashtag and work family hashtag and work our previous tags that are there for when you first start the journal but for cipher csp data decryption encryption it's there because I tagged it for our purposes I believe that tagging is very essential for when you want to find an entry so useful for multiple entries you can click it and it'll take you right to where you have it you can also take off the tags and here you see the live word cloud it'll show you what word you use the best use the most and so my word that's the biggest of encryption because the vocabulary we have deals with encryption so moving on we have two modes edit mode which as you can see has a lot of operations in it and preview mode so with edit mode for our purposes I'll show you how to change the font size individually so as you can see in preview mode this title right here is much bigger than these and these words so what you can see different is the amount of operators that I use in this case the equal sign having less equal signs means having a bigger title so one equal sign on each side will give you the biggest title and from there you can customize how you want the size of the title to be so you should keep that in mind for future references on when you're doing your entry and when you go back to edit mode you'll also see that some things are bolded and others are not you can bold words using two asterisks on each side of the word so asterisk encryption and there you'll see it be bolded and from there you can insert links if you want you can insert pictures you just have to save it earlier as and you would increase so that's Sophia pictures in the square shading so from here you can move on to an empty date it can be any date that you want and so that's preset templates the templates are this week's templates which could be this example you can customize it as you want but if you don't want to choose a template you could close you can also use help which is there for help in the notebook you can use a journey and I think for students this would be a way that they could log down their days because I know some students like to use books and diaries to write down their thoughts or just simply document their life so you can put date, location, participants the trip first we went to exercise and we got to yyxy and another template would be the meeting I think this is very versatile for any purpose because in high school or really any school at all you have clubs and one of the club members could be the secretary or it could be to take down minutes so in order to take down minutes you could write down who's present the agenda you had, what you discussed the decisions you came upon and assignments that you have I think that's very versatile and there's also a personal one which you can personalize so help with the date, what needs to be changed so that's more for thoughts you can also create a new template and as you can see so you can scale from here you can see the insert which you can insert pictures file, links, bullet list, title, line date and time, line break there's more for customization and for format you can also bold italic model space underline strike do and clear format so my partner will go more into depth with exporting because that is what we will be doing for our purposes I actually wanted to go back up to health before I go to export so just so we can figure out what we're all saying you guys have a general idea of how to properly navigate afterwards so right now I just went up to health previously before and it takes me to red notebook documentation in this page it shows you layout, text format, hashtags advantage tagging, images, files and links and so on basically this is the entire user guide for using red notebook for 1.15 with every update they always change it up so you have new methods new shortcuts and just a better understanding of how to use the new software, the new program so to say for example we were talking about layout I want to figure out how to have a proper layout for my entry and just want to know a bit more how to use text so I just click layout provide me first the definition that the program sets for what is layout so as I said there are two modes for red notebook the edit mode and the preview mode which we just saw we also see text as in main text field is the container for your normal diary entry like this one today I went to the pet shop and bought a tiger then we went to the slash park and had a nice time playing ultimate frisbee afterwards we watched Life of Brian basically what we're seeing right now is the raw text form of the program as we mentioned before here's the normal text and then bold if we were bolding this normally on edit mode all you would see were the text before tiger equal after tiger that will indicate the program just as to run with bold for tiger this entire program is based on python so if you're familiar with python you also know all the little tricks and tips to change up the words to suit the style the straight through through pull instead of just erasing it we can just put straight through for the program automatically every time you pull by accident scratch it out or if you want to change it later by mistake we just go back to edit see the word prior to the word there would be the two indicators of what will happen to the word and you can just backspace and change it so we're going to look back up and see more about images, files and links so red notebook provides you with the opportunity to add in your images, files and links so what exactly that means is you're adding the attachment to the new entry having it available for yourself so you can play it play it back, click it or whatever option you had set it before just to reuse it and this is very important for if you're trying to construct your own entry on something more than just text so it gives you a visual image some way to link back to a reference something which is a reference and it allows you to get a better understanding of what exactly you were writing that day as you said before there is an educational side to this by having this in it provides a student with not just the opportunity to write down notes in class but actually use the laptop or any device they have as a visual image and just help them build up on their way saving and exporting currently red notebook is looking into version 1.17 in which they want to expand the exporting so it's not just one saved file on your PC or device but having it as a share option just like social media where you can hashtag the article or journal you have made with someone else by just that one hashtag currently that's looking more into the future but how the system works for exporting is your file is being saved you can then back it up in case something happens your computer goes out or there's an error with it and then bring up the entire entry the whole month, week whatever you had written prior to that so do I have any questions before we continue on? Yes? We're actually going to go into that as he shows exporting on the actual program Oh, I'll explain it right now so because of the fact that it's open source and how it's completely personalized up to you there are options to select either you want a specific day, specific month from one day to another or just specific times of the day so you can choose you can choose an edit if you want maybe just the morning entry that you submitted all the past weeks or just the day today and then the way it's formatted is it can provide you with the time day, month, year and even the type of file you were downloading it with and then you can pick and choose what specific information you want from there and then when you're in red notebook are you able I notice you're able to search by day when you're in a day you're able to search by day Alright, so the question was am I able to look am I able to look of specific entries by date I mean by time and yes you can you would only have to go up to preference dialogs and then look, set the features of your calendar to the specific day and then just the time frame that you want however that just depends on if you actually have something there if you don't have anything written or it's kind of mixed between days I mean from the time you have written it can make it a little sloppy but we recommend that you just look it up by day it would make it more efficient do I have any more questions Alright I always said before keyboard shortcuts here's the actual template which we took it out from that shows you all the keys, controls that are required for the program if you just want to take it easy and write your entry more efficiently we were going to go over encryption however due to the fact that we're still in version 1.5 some of the key aspects we can't really cover over with just the program by itself we would have to use like a third party open source program so it can allow us to continue with the exporting files something I found really interesting about this program was it has an automatic to-do list in most journal online most online programs or journals the to-do list is either not part of it or you kind of have to get it separate from the journal as you write it by yourself Red Notebook provides you the opportunity to actually have it preset to-do list and then you would just have to follow the steps indicated in the documentation and it would provide you a list of all the to-do-day items what to focus on and it essentially becomes your new list of the day for each entry now we're going to go to the exporting before you export we recommend you to first save right now what I just did was I wrote hello and I put equal before equal in front now we'll go to journal save journal again save as then we can ourselves change up what we wanted to call it a program we're just going to leave it for this demonstration Red Notebook and we'll select okay originally if you would ever enter you had you would type in whatever preference you wanted then you would just save an indicated folder in your computer okay this is also a thing that we forgot to mention there is also error directory which helps you correct anything you're missing and tells you ahead of time the user you're using or the entry you're submitting is not correct for it to be properly processed so we're corrected by saying hello you can just type simple text under it so it's not just a plain text so hello how are you today now we'll go back to journal export there's five steps for the exporting what type of format you want it is it plain text, html latex latex or pdf for this purpose we're going to go with html then we can select forward as before we had a question of what days we wanted to select and now we have the option of selecting all days which will transfer every entry we have in our journal provided down here below as we're currently days visible as in today which is yes March 4 or we could just export selected days by time range so we wanted to export the first all the way to the the dates will be shadowed under and it will indicate what dates we have selected but just for the purpose of this we're just going to select the first date which is the fourth here we go forward and then up here in this option we can select how we want it to be previewed before the text A lowercase x for the percentage indicates the day the physical day and then the recorded day if we choose the second one it will provide us Saturday official date then the days on which the program is on the year today is the 63rd year of the year it will provide it from there if you want to go even more if you go weeks the week of the year it's done 15 just the day the official day of Saturday or just the month so we're going to select Saturday March 3rd 4th done 17 says 63rd and now we're going to export text and tags right here it shows us all our tags that we selected prior to our example Cypher CSP which is computer science principles, data, decryption family and hashtags once we select some that we wanted they would move on to the next step but since we already have them all connected as one it will automatically send all of these because of the first option we have then we go to forward once again document name the way we saved it HTML and the folder we selected for it afterwards we go forward again and it will show us the summary of everything we're exporting and how we're exporting it so our format is HTML exported all days we said no because we just want one day and it provides the date export selected text only we said no because we wanted text and tags then we would just apply now we say there's a document inside your computer so that you can then use again later to bring back up then we would just find the same folder do I have any questions on exporting now we're going to move on to our hands-on activity to make your own entry and then save it and we're going to upload it by a third-party program that we have so for our hands-on activity we're going to ask you to do it to set up an entry so first we want a title which is scale 15x and you're going to answer the questions what has been your favorite book for the day what would you recommend others to go to and if that's for a notebook what is your favorite program to use and after you have answered those questions we want you to format it using line breaks bold and different font sizes whether it be through preferences or using the operators and at the very bottom use hashtag new gen just so you can get a feel of how to use hashtags so we'll give you a bit of time to create your entry we forgot to mention something once you have your file saved and you export it you can go to www.digitalclass.org www.digitalclass.org next gen journal give a site that you get the journal and just have a nice gen so once you have your file you want to click on here and you're going to want to upload it there questions are what has been your favorite book for the day what would you recommend others to go to and what is your favorite program to use let's open first so how are you guys doing? good late on time we'll just wrap things up as you can see there's many implications for education using this program so there's organization that allows for better management between students and teachers using tagging if you have multiple classes you can jump from journal using the tags so you can have at bio or at csp and jump between formatting allows for better ease of view so students can easily see what they have and read it better and annotating is one of the key features that I like about this app because students learn in different ways so when students go over their notes they can actually annotate and extract the most important information that they find so they can study for tests on the go because this doesn't use wifi and you can also use the calendar features jump from day to day the way in that this is convenient is that it is you can easily export files between users you can export it as pdf html or plaintext and from there you can easily send it to a teacher if you have an assignment and it is also cost effective as it is free you can use so much with this app and it has multiple users just as a to-do list or other things you can use the templates that they have there and it is also environmentally friendly and with this I just like that it reduces the use of paper because a lot of money goes into paper supply in schools so if you're cutting out the use of paper using this app then more money can be directed to other things such as buying more computers for a classroom or allowing for students to have ipads or computers to take home because some of us aren't as fortunate to have that a leisure and it also reduces the waste so if you have any questions we have answers regarding this app are there any questions? one two yeah it sounds good? alright can we use that mic? my name is Mario and my name is Jason and have you ever wanted to record tracks in record time? well we'll show you how to make record tracks in record time so the program we're going to be introducing is Audacity so if you guys want to download it so you guys can play around as we go you can go to the URL audacityteam.org and you can follow the links for the download so we'll be going over the quick agenda what we're going to do during our presentation so the first thing we're going to be doing is a quick introduction just to ourselves about ourselves and then we're also going to be doing a quick introduction to Audacity and its features and then we're going to show you exactly how Audacity works by playing around with the program and recording ourselves and we're also going to show you a piece of work that we did and how it can be used in education so introductions who are we? so Mario and Jason we're seniors in high schools in high school I'm from Gardena, California I play a couple instruments I play piano, guitar, drums I play the triangle I'm also from Gardena and my name is Jason like we said before and I play guitar in middle school band I played tenor sax and I also have experience with making music through programs like studio or free loops what is Audacity? well according to the website, Audacity is a free open source cost platform audio software for multi-track recording and editing basically it's a program that lets you import or record your own sounds and you can edit it, clean it up and it can be used for many different applications such as making music giving speeches and many more things that we will mention later another thing about Audacity is that it's really simple unlike big programs that are expensive like Logic or Free Loops it's really simple the interface is simple and it doesn't take a lot of musical or computer talent for you to run it successfully and the one thing we like about Audacity is that it's simple as I said before so everyone can use it in teachers and students for teachers there's a lot of application one thing can be like Podcast I don't know if you're here for the other presentation but the one with the drawing pad teachers can clean up their audio and then present their voices to teacher lessons and one other thing is promoting language learning say that the teacher wants to say Spanish or maybe even English to your students the students are not going to read a book and just get the pronunciation randomly just by looking at letters it's better if they actually listen to the pronunciation of words and even in high school teachers can also record, debate their speeches to analyze the speech patterns and help students improve upon their voice and so for students the benefits are also the same so one application could be recording speeches like the speech we're doing right now also for musicians this is an affordable option choice compared to FL Studio Logic sound cake because we're broke and we need open source material like this to run our lives so we're going to be going over the basic features of audacity and the first thing we'll be going over are the toolbars at the top of the interface for audacity you'll see a vast array of toolbars that you can use and we'll go over each one of them the first one is the transport toolbar this is the basic videocassette controls that we have so we have pods, play, stop, rewind fast forward and record so the next toolbar is the tool toolbar and the six buttons that you see over there they all do different things and the first one that's highlighted is basically the selection toolbar and we'll be going over this later okay the selection is basically your highlighting tool so you click the selection toolbar and you hover your mouse and click over specific parts of the song that you want played or edited and the selection toolbar is what you're going to need to do anything before you edit so the next one is the envelope toolbar the envelope toolbar will allow you to adjust the volume on your audio tracks that you record specific points within one single track the next tool is going to be the draw toolbar so basically when you record on audacity the recording is going to be shown through waves of decibels and what you can do with the draw toolbar is you can zoom into very focused points in the song and you can manually edit or draw in specific wavelengths to shift the way the song sounds the next tool is the zoom toolbar so in order for you to draw on the waveform you're going to have to zoom in so this tool will help you either zoom in to view the specific waveforms or you can zoom all the way out to see your entire project as a whole so the next tool is the time shift toolbar so once a track or a whole track is selected you can move the selected track along a timeline so audacity records along a specific timeline and you can move it from the beginning to the end of the song or wherever you actually want it so the multi-tool if any of you are familiar with Photoshop the multi-tool is basically the magic wand of Photoshop so you can do any of the other tools that we've just presented and depending on the parameters and the location where you're pointing at it'll do any of those tools so the next toolbar is going to be the recording meter toolbar it monitors the sound that you're actually going to record so say that I plug in a guitar or my microphone and then make an input into those input devices and it'll actually show you how loudly or quietly you're actually recording the next one is the playback toolbar so whatever you've just recorded it'll show you the audio levels for how loud it's said to playback the next toolbar is going to be the mixer toolbar so there's two parts to it the microphone that you can see loudly that you're actually going to record so say that the things at the top right now the monitors the volume it'll actually pick up the audio at very sensitive but high amounts and then the volume side next to it it's just controlling basic volume for playback the next one is the edit toolbar so you have cut copy paste and then you also have the undo or undo or redo and then you also have the other like zoom in and zoom out so the next toolbar is the transcription toolbar it basically allows you to change the speed in which the song is played and naturally if you speed up a song then the pitch will get higher and if you slow it down the pitch will get lower but there are effects and audacity that will help you counteract these changes in pitch and the next is the device toolbar so you'll be able to select your inputs and outputs so for example in our setup we have two inputs you want to record from one is the guitar and one is the mic so we could choose if you want to record from the guitar or the mic and then we can also choose where our output wants to go through we can either put it through the house speakers or we can do the laptop speakers the next thing we're going to be talking about is audio tracks basically audio tracks is each specific layer of the sound song you're going to make so a song is going to have multiple layers but say that we make one recording of a voice it's going to be a single audio track and what you can do with different tracks that a song is so you press the mute then that one track you select the mute will obviously be muted if you press solo then all other tracks within the hold of audacity will be muted and this right here will control the volume of that single track so that you can make like a guitar louder while the audio will be lower and this is panning the stereo from left to right so you explained it so now if you look at the bottom of audacity you have the next slide you have to select a toolbar basically you get to choose where you want to start and stop where you want to listen within your recorded timelines so audacity also offers another wide array of effects generators and analyzers and we won't go through all of them because there is a lot but we will show you how to use some of them as we go along so can we get a volunteer from the audience preferably a male alright yeah so one of the applications of audacity is to basically record your voice so we're going to have our volunteer hi what's your name? we're going to have him read an article from The Onion this morning alright yeah it's going to be this where you need the audacity to clean up the sound yeah you can just can you come here now open up audacity it doesn't take much to set up so right now we'll choose we'll be using our microphone right in our section toolbar can you speak into the mic as like a general rule of thumb when you start recording you usually want to at least give yourself 5 seconds before you actually start recording anything to capture any like excess noise so we'll start recording now thank you round of applause alright so we'll stop the recording now now now we'll show you can we get a playback so we'll listen to it before we clean it up alright yeah that sounds good right so we barely open up audacity and we're able to record tracks but we can make it better I'm going to cut this part out alright so first what we're going to do we're going to get like the noise profile so when we recorded earlier we let like 2 seconds go by to capture all the white noise so what we did we went to effects and then we captured the noise profile so now that audacity has captured the noise profile to the entire track I made a copy so that we can do it before and after so what that does is with the noise profile it captures all of the white noise in the background so like the hissing from the speaker are just like you know these are the really as you can see there's a lot of effects but we're just going to do the really basic effects that anyone can use so the next one we're going to use is normalize so basically adjust the volume so it's more standardized and then next thing we're going to be doing is equalization audacity has equalizer on board so what we're going to do we're going to do a bass boost to make his voice sound more manlier alright so let's listen to the original recording it comes with his manner of employment local freelancer Martin told reporters he loves being able to barely scrape by on his alright so now let's compare that track to the mixed track that we've just done freelancer loves being able to barely scrape by on one schedule using our records, creating a flexible lifestyle with his manner of employment local freelancer Martin told reporters Monday that he loves being able to barely scrape by yeah audacity is that simple to use so it was just those couple tools we were able to clean it up and make it sound better okay so now we'll be recording our own sounds oh yeah okay yeah so we'll try to record a song on the spot right now so uh can someone in the audience like name like uh an artist that Ed Sheeran just came out with an album right I think we can do Ed Sheeran thinking out loud you guys are thinking out loud by Ed Sheeran me too so um I guess I'll try to play do the beginning yeah the intro yeah so we're gonna we're gonna change the input to line in which is the guitar and we're gonna need a metronome yeah so that he can actually record on beat songs is that basically the verse or the choruses will just be a progression of or one progression and then it can be repeated all throughout the song which I'm pretty sure is the same for thinking out loud so here record and he can go whenever the playback has like a delay so I think he needs to not use a playback alright let's try again alright we're gonna do it again without the playback the playback is a delay and it messes me up and we're gonna give it a quick listen yeah that's what I did before so again it's the noise profile to like get out the white noise black noise whatever noise is and now we're applying it to the entire track and normalize the volume we give this one a lead guitar so we're gonna cut that part out take two take six take four noise reduction again and we'll normalize the track so the bass boost now we use the bass boost because it's a guitar but it's supposed to be a bass it looks pretty loud yeah sure bassers make me sound more man save my soul stay on stand now alright alright so we'll just pretend we'll throw it out and we'll pretend that it was on key that the voice track is there that's the export we track once you're done recording so basically you can just save the project as an audacity project which we'll open up as an audacity project but once you're done with the song of course you're gonna want to export the audio when it's not muted and what we're gonna save it as is an mp3 file and actually for audacity to save it as an mp3 file you're gonna need to download this other file for some reason it's called lame yeah but since the internet's not working very well yeah it's hard to really show it but it's a quick download that you look up and as soon as you download it it's automatically gonna insert itself into the audacity folder and when you have that you can simply save files as mp3 files which is the most common audio file and it does the tracks we make on single mono sound which is perfect and we are done with exporting the file which is really easy and unlike other audio files they need to render for a good amount of time because of how complex they are but for audacity it's fairly quick but there is a slowdown like once you get to like longer packs of recording like especially up to the hours of the experience slowdowns you know the applications for audacity also goes to school projects so we pulled this stock film off of the online it was free we didn't steal it and here's the basic video by itself so it's just like a basic campfire you know no sound but you know with audacity you can record your own tracks and then you can make it sound like this we put it through the adapter is it working? it's not even playing it's not even playing hold up alright so basically we recorded a song an original song one of our friends and so basically it was supposed to make it more melodramatic evoke a motion through music through audio through audacity for some reason powerpoint does not want to have the output the same as audacity so the audio isn't playing for some reason let's just assume a melodramatic song is in there imagine how much more emotional the campfire would be if you guys get tired around it technical difficulties but presentation and now we will be doing okay yeah it's a garage band instead you can audacity it's an option it is open source you usually have to get an ipad like an apple product and that costs a lot you can download audacity on any platform and you'll be able to use it any other questions? Rich can catch us on SoundCloud next month maybe next year that's going to conclude our presentation for today thank you it's on right now yep I can't hear you if we can't hear you all right hello hello test one two three look at the 97.1 good morning good morning htpa what how many days is it greeting salutations everyone hello testing one two three hello all right so we got a talking on open source 3d printing how many of you guys have ever used a 3d printer before good amount well the rest of you for a fun time so are we renewing again Rich Rich we'll be talking about this if you guys have never met Rich before for an exciting treat so without further ado we're just going to present open source 3d printing alright like introduced me my name is Rich I'm a senior in high school and this here is a 3d printer I go home so some of you guys may not know what exactly is 3d printing so 3d printing is essentially the process in which we melt down materials objects that we designed in CAD you may ask what is CAD well CAD is computer assisted design so how does this all work so first the 3d printer grabs information from either be a computer an onboard system board or an SD card then next we prepare the filament to extrude this means to extrude it's that the filament is pushed through something called an extruder and it's raised up to really high temperatures sometimes for this filament exactly we use 220 celsius but some of them might even go up to 260 celsius 280 celsius and there's some filament out there that goes up to 400 celsius and that's step 3 and in step 4 in the 3d process it would print the object so in my opinion there's really crucial steps in 3d printing so like I mentioned first you need to create the object in CAD CAD which stands for computer assisted design there's multiple types of software such as Tinger CAD Autodesk Inventor Sketchup or even CADNF so you would also use CAD you need to convert it to a file called STL STL stands for standard tessellation language but it isn't exactly finished yet and you may ask why does it take so long for this to read the program or you may try to go a little cocky and then try to print exactly from the STL and you print out to do something called SpaghettiFly so in order to make sure that the 3d printer would read the STL file we do something called splicing splicing allows the 3d printer to be able to understand the travel moves how many layers it needs how much filament it needs and how fast or slow it goes let's look at the software for this personally I use something called Slicer S-L-I-C-3-R and something called G-Code personally I don't know what G-Code stands for but we all know and 5 so the printer itself will read the printer for printing so it would load the filament or you would load the filament clean up the hotbed and checking making sure the belts are good ready to go by making sure there's some resistance and what not and then 6th object this is the hardest part just printing the object itself because there's so many obstacles to make sure for example that you're printing an object like a cube but then your extruder is too low and actually hits a cube off your build plate and it is putting filament over your plate and that sucks then next you remove the object from your build plate and print what your original purpose was like some figurines here they're just made for looking cool but some engineers may actually create some gears to be used for robots robotics someone may called me 3 print a propeller for useful like a drone or other types of miscellaneous purposes and this would happen after I designed my filing CAD and after printing it out it actually is a phone holder so it looks like and this I call it calibration prints after I've loaded in the filament or I just a new setting so I always do I always do it on a cube there's no music the audio kind of messed up this whole process in span of around 37 seconds in video and time lapse took me about 2 hours to print this tiny cube and the kicker is not even perfect something a lot of times called filaments filament takes you out of form of plastic the most common type of plastic we use called PLA which stands for polylactic acid polylactic acid filament it might be I think the most common use filament it's also made from vegetable oil and allows you to print at home without much ventilation another type of common filaments called ABS which acrylonitride butadidine butadidine styrene it actually is what legumes are made out of I mentioned that you also print out some filaments in really high temperatures you actually print out ABS in really high temperatures as well which is about 260 I think 280 Celsius some non commonly known filament actually is metal you actually print out metal filament versus from Amazon you'd be able to print it out and wood actually I bought wood from Amazon from a week ago I tried it it kind of turned out really sketchy so there's a lot of coloration involved with 3 printing whether it's open source or you actually bought one from a vendor and here's the software I use actually I come out with my designs I have a tour host which I use to connect my laptop to my printer and slicer in order to convert my files to to be able to be printed so I go to finger guide sign in so here's my CAD file actually comes with a random name so it's called the daring job group phone holder and in order to download it in STL you would export everything in the design STL it comes in here so next we would open up Revitor host very connected I mentioned slicing if you try to print exactly like this it won't read it would still try attempt to print it though so it would be wasting your filament so you would slice now 3 printers able to now understand what it needs to do for example we see there's no layers involved right both are on travel moves and then start going on through different layers you start telling me which travel moves you need to take how much filament it needs and how it will look like for each layer and then finally it will start printing turn to the settings more after it's your turn to actually come up with the CAD so if you have a laptop with you, please go on TingerCAD.com create an RDS account and come up with the CAD file and if I chance I'll choose a lucky member from the crowd to actually print out their objects oh yeah please don't make it too big filament is expensive trust me guys it's not cheap hobby in the meantime if you want to see any figurines I'm actually passing out to the crowd 3 printing isn't perfect so if you like really closely inspect the figurines you'll see some faults into it actually it takes a lot of calibrations to get to this point so how's everyone's CAD going I'll continue on with the presentation in the meantime you guys create your CAD so best of 3 printing while we went over what 3 printing is you're like oh 3 printing could be used to make really cool figurines or cute puppies or kittens and put in your bookshelf that you'll never see again but it actually has a lot of benefits an example of this education so for example a medical student we just look at this 2D design and be like wow this is a lot of information to read how do you actually apply it in the real world what if someone's hand doesn't look like this so some professors would actually hand out these designs a 3 printed hand it allows them to actually incorporate real world applications and be able to see how a hand will look like in 2 dimensional space aren't going to need all the skin that you have you will see the bones in fact another big complication would be engineering so this is actually the first 3 printed jet engine the one on the left on the right it's just normal engine printed in CAD but then someone has the ability to 3 print this using a 3 printer and a medical this is actually one of the biggest upcoming startups in 3 printing because not a lot of putting 3 printing into medicine until some doctors and some entrepreneurs are able to incorporate this and for example now doctors are able to use 3D models from using like a CRT scan of a patient's heart to be able to understand where the implications are where the problem is at and what's wrong with their heart for example what if someone has a hole in the heart but they don't know where doctors don't know how to operate on it it's a highly experimental procedure but 3 printing it out 3 printing on the design of it doctors are able to understand where the problem is located and how to undergo the procedure so on the left is the CAD file of the 3 printed heart it's a rendering it's how the heart looks like when it's 3 printed and in art art is one of the biggest ones actually there's a lot of artists out there who want to create their idea but for example what if someone wants to give their significant other a design they want to give them something special something that they created themselves so they started designing something on paper but it's like a heart like a geared heart for example and then all of a sudden they're like maybe I could put this in CAD I just don't want to give him or her just a piece of paper so they went to their respective CAD software and then they started designing out what they wanted after like an hour or maybe a whole day of waiting for printing but a three dimensional physical object that they're able to give to their significant other now for example you see the pictures here the pangolin and another one is the hairy lion although a little more background of the pangolin one is actually designed by someone thinking of very cool amount it was actually used for pangolin day ok a little background of pangolins there are these endangered species they're critically endangered and as many people printed this out the pangolin art they donate five dollars to save the pangolin foundation and I don't want to be the Debbie Downer but there are some downsides like copyright intellectual infringement happens in one case someone actually took a file or a design from Thingiverse it was um, I believe it was it was a frog, it was a frog design they posted on ebay claiming it their design and then charging people thirty to forty dollars just to print and download their design but on Thingiverse Thingiverse is actually an open source community where you can download deathfield files and be able to print it from here and that leads to the conversation that what if intellectual infringement is possible with three printing designs I mean after all, who wouldn't download a car and another one is this a real extreme case the ability to manufacture illegal goods at home I'm not sure if anyone really heard about this but in some recent news I think about like two months ago um someone got up behind an airport for having a fully three printed gun they were caught on the airport after TSA agents were looking inspecting inside the backpacks they passed through the metal detectors but they weren't they didn't pass through personal inspection so there are some downsides of the three printing and then leads to the conversation do the benefits outweigh the downsides of it personally yes, yes they do especially having open source three printing in general we have three printed prosthetics like this one over here on the left he wasn't able to afford prosthetics even on health insurance he can't afford having prosthetic legs so even though he's an engineer and he actually designed a catfile of his prosthetic legs they printed it out and then attaching themself and then now we're researching three printed skins for burn victims this is a really big improvement in what just happened in five years ago with three printing becoming a bigger and better idea where innovation is coming out and we can have three printed skins for burn victims after like skin graft therapy which would be really painful but it was expensive we'd be able to three print artificial skin and then another one there was on the news too a three printed cast a college student he once broke his bone and he hated the traditional cast it gets itchy, it gets really hot in there it gets sweaty, it gets dirty and he wanted straight away from that so what he did he designed a readable and open cast which he's allowed to scratch the skin make sure it can breathe and make sure it can be cleanable and now that's why you're all here open source and three printing so the open source aspect of this is something called RepRap RepRap stands for rapid replication so rapid replication it stands for itself so you have a three printer so what you'll be able to do is that you will three print parts for the three printer and then be able to build your own at home and the goal of this community is to develop a three printer that is 100% three printed and as a result it's accessible for everyone and anyone some examples like these would be the Prusai 3 it's a really popular rep rep machine another one would be the Darwin I know some of you guys don't like history but RepRap is really important in my opinion in the open source three printing community so a little background in 2005 Dr. Adrian Bauer he's a mechanical engineering lecturer in the University of Bath in England came up with an idea that maybe we could make three printing more accessible because at this time three printing was only available to be able to be used in like a really large economical scale he wanted to be able to create three printing to be used at home to be able to use anyone who is creative enough and be able to contribute to our cause as well as innovate even more further technology and it took him a really long time to get to this area like a year ago he and his team developed the RepRap 0.2 it was considered it was called a Zafoid prototype and this day it was really important actually because it was able to three print the first part of itself then on April 14 April 14, 2008 a rep from the RepRap community created CAD and was able to design and then print the first object first user object created first user object created tool I guess you call it tool it was first made by a RepRap machine and it was a clamp that I bought to attach to a 4PS dashboard in October 2009 the Mendel was created the RepRap 2.0 it printed its first part actually and this is another leap of a type of machine that you need that you have but you should be able to create your own three print parts from this and another step was August 31, 2010 RepRap 3.0 Huxley it was developed and named I think this is really this is a big breakthrough because it came along five years it was able to reach 3.0 and this picture is the RepRap first part some people in the audience may not really know what it is actually but it's a very flat to make sure that the rudder rod hold in place and it's held by an M8 M8 screw which is held in by an M8 nut and the Mendel 0.2 and the Mendel they were drastically different the first RepRap it was a cube shape not a Mendel now it's a triangular shape I think that this is a really big difference but in terms of parts and stability it is because what RepRap really is they wanted to make sure it's accessible to everyone by having a triangular shape they're able to lessen how many parts they use and how much filament they use thus drastically dropping how much it costs and then the Huxley comparison Mendel it is drastically smaller actually if I recall correctly the Huxley was actually created to be used as a portable 3-printer and some benefits open source 3-printing is that successful I know it has accessibility a lot but really open source allows anyone, everyone to collaborate and contribute to the goal of the open source program and it's affordable this leaves an accessibility because most RepRap machines some of them don't even reach $500 going to most vendors, some 3-printers some of them can reach 1.5K it's for a basic model but for RepRap it can also buy one for like around 300 and documentation for those who are really wanting to build a RepRap machine there's a lot not just some, there's a lot of documentation online they have their own wiki page if you want to look it up I could call wiki.reprap.com that's where I learned how to document to build approved I3 and the ability to evolve RepRap without the contributions made by the community it would have been where it is today because with our contributions we've been able to come up with ideas to improve the machine ideas to make the software better and ideas to come up with better parts for the machines like for example on Thingiverse right some people came up with an idea to build a better fan a better ventilation a better proof I3 and after that the actual makers of the proof I3 Joseph Prusa implemented the fan design into the Mark II and I don't talk about proof I3 a lot because the printer I made it was based off this the developer of the printers named Joseph Prusa and I know I talked about documentation if you want to build a part that you printed or come over for the benefit you can find STL files on github I think the best place to look it up would be the wiki.reprap.com I think that's the name if you just want to reprap wiki or reprap wiki Prusa I3 and this is one of the most popular designs for most reprap machines there's like a lot of derivatives from it for example done at A8 the portable 3 printers out there is like around $160 to buy on sale some people could buy for cheaper actually but some guy who built his out of wood for around $80 buying stepper motors the wiring and electronics and here's my attempt I got an incorrect frame on line from a vendor so and the first one I was pretty confident in how it did until I looked at documentation and told that it was upside down so I wasted about 3 hours on that and the third one you can really kind of see it but I added in some boards on top on the left one I started adding more parts to it I call them stoppers actually I don't know what they're called but they use these as guards to make sure that the threaded rods here they won't destroy or scratch the frame itself and then the second one I started adding the third rods on the main base third one on the base itself and then bearing flats to make sure that the heat bed stays in place and the second one out in the heat bed some 3 printers don't cover heat bed I had to write his mind separately actually and the third one I added the 3 printed parts to it the 3 printed how do you call those? holders? I'll call them holders in the meantime you can see my wrench and a lot of shafts on there give me a ask what the hell is this I have really bad cable management as you can tell I like the home build feeling of the Frankenstein feeling because I feel a little more personalized because I feel like if it's too clean people will think I just bought it online if I have a little flaws to it it feels as though that I built it personally and it reflects my character and here's the finished product here's the finished product it took me around 13 hours to build the whole printer and I was excited I really was I wanted to repair my first object calibration cube a 4mm calibration cube so I got ready I put in the filament I put in everything started printing out I sliced off it perfectly yes cube to those who actually use 3 printing 3 printers because effect is a spaghettification effect when the 3 printer is fully calibrated and just starts spewing filament onto the heatbed it comes out of this huge garbled mess that just messed up plastic on your heatbed and it's going to rise actually second time more calibrations I was able to make it better and the third time came up to a nearly perfect cube although I want to say perfect but to me but after time and time more calibrations more calibrations I want to put a drag in you can see how that turned out but even though 3 printing isn't perfect we still have long ways to go and I got better my printer I got even better the fox the dog I got a car holder from my phone and so there's some stuff on the PowerPoint but I mentioned I'll go and delve deeper into the software of it so the software I use to connect my printer to my laptop is called repertoire host repertoire host is an open source it's an open source community, it's an open source program you can still find I believe you're able to download a Windows app and you'll be able to download it on linux so right now right now there's a lot of ways to make sure that there's a lot of settings actually maybe it seemed really daunting at first I was confused I actually spent like 2 days trying to figure out how to connect my printer to my laptop I didn't know it was the port number but something called serial ports serial ports are connected through this USB right here the blue one and it's connected to my laptop in a USB 2.0 port it doesn't need 2.0 exactly because it needs a 3.0 port and you can refresh your ports to make sure that it's connected another reason why I lost it first I didn't have any drivers for my printer so there's one again into reprinting a good device manager let's go to device manager so we'll look into what ports you have so it tells me that mine's in USB serial channel 340 so it means that is this one is the computer trying to communicate to the 3.0 printer is that the reason you need to tell it what to do so it's indicating communication is 5 so computer settings choose port 5 but you ask what the bot way is what the potential protocol DTR this is actually really important when I first got the repertoire host the default was 3,840 so when you apply it it wouldn't be able to connect actually it wouldn't be able to read whatever it's sending to so you really need to set it to you really need to document read the documentations what type of board are you using in this case I'm using our doing a clone called anet v1.0 it uses 11,520 thousand bot way so me apply of course personally I don't want to mess with these settings because I don't feel like I'm too advanced enough to understand what these are and this whole jumbled mess just numbers and labels these are really important although many people may not know that other countries use the metric system because they use imperial the board reads in metric so as I see millimeters instead of seeing it at inches or feet so if you want to convert that just look up a calculator online and just convert to how fast you want it so in this case right so the child will feed rate this talks about how much filament that the filament would feed into the 3-printer per minute same as the axes the axes feed rate also how fast it would go up and extrusion extrusion is really important you want to avoid actually we have the dragon right now that's another dragon dragon right so if you look if you observe closely in the dragon do you see any parts like stringing parts like very thin lines right I have an extrusion at that point extrusion makes sure that the filament doesn't extrude while it's moving there's a lot of parts to it there's a lot of parts that the filament can mess up on but there's also a lot of parts where we can make it really good this is where the restriction rate is actually messed up extrusion retraction is extrusion in my bad so retraction is when you make sure that the filament goes back up instead of pushing it forward extrusion means how much filament will be going down like how much filament will be pushing out from extruder extruder like extruder is a reminder extruder is the part of 3 pinner where it pushes out the filament and the temperatures, heat bed you don't really if you're using blue tape like I am and you're printing PLA filament you don't need a heated bed but it can help with adhesion this is really important because you don't have any adhesion we have an effect called curling curling is when I don't have the dog right now I don't have the big dog statue big dog, okay if you look closely on the sides okay hello actually can everyone see the dog if you look in the sides you'll see some edges were actually bending upwards so this is an effect called curling this is what happens when there's not enough adhesion or when you're curling too fast because plastic when it cools down it actually shrinks so that leads to the curling effect curling oh see you are l-i-a-l-i-n-g yeah literally curling curling yeah there's a lot of there's a lot of problems on 3 pinning but there's a lot of ways to fix it up and apart positions what happens when it's your home position so for example when you're done printing you may want your printer to be in this selected position so pretend this is a graph you say x x y no x and then your y and then z it doesn't make any sense I think this would make more sense actually so this is your x position right here's your y and you know why it's going upwards that's your z so in the settings maybe you want to have your printer be in this specific parking position where it's done or waiting to be so in order for me I also have at the home position 0-0-0 so you may send ETA to the printer display I'm not sure if anyone can see the printer right now but it shows you how fast or how long it would take for you to build a print you can see it here actually estimate printing time we do around 2 hours and 3 minutes for 7 seconds to build to build this so the heads up that's why it would take around like 5 hours to build that the printing is a really slow process but it's really nice to watch it's cathartic and right now I only have one extruder so the extruder right now you can upgrade it you can buy an aftermarket extruder replace it to have higher temperatures the line reaches up to 250 my max is around 60 I haven't really pushed anything further than that because I don't want to damage my heat bed because some heat beds can actually reach up to 100 celsius which is really really hot actually and my diameter is 0.4 and it offsets just in case using like multiple extruders you can go out there who want to have like 3 extruders or 2 extruders because they're loading in 2 filaments like for example you want to use orange and red on one extruder you load up red and the other you load up orange it'll adjust which one you want on here and the shape most 3-pinner shapes are square but some 3-pinners actually I believe there's a 3-pinner other called a delta it's a cone shape it has a circle bottom so you may adjust that if you want to use a repertoire hose but right now mine's square shapes they're rectangle and events if you're good with C you want to make it really precise you'd be something using you would use this next I have an overpincher so if you want to know what figure I'm using called Anette A8 actually this is the derivative of the Prusa I3 so it's a Prusa I3 clone most would go by the Prusa if you want to support a developer you can go on its website and purchase it it's pretty pricey like around 399 but I believe it's worth it you can see how much students I'm sending how many lines of code I'm sending and so far and hopefully forever I've seen it for ever now there's multiple tools like for example you want to adjust how much line or how long your belt line should be so it gets a little more into mathematics and physics but I want to go over this right now because I don't know what angle my several motors are and if you want to know how many screws you're going to need same as over here now I'm wondering why I'm doing all three settings so I'm going to use this but if you're really in 3-printing and you want to use repertoire hosts this is really important and then there's multiple types of software you may use actually I personally use slicer to slice mine but there's another one called cura the cura engine I would have the cura engine involved in mine actually so far I don't have slicer but you could also use cura, cura is also another free open source software but right now I'll focus on slicer and here's the configuration menu on this actually I'll maximize so right now the layer height determines how much quality or how much how much filament that each layer should be so for example that you want to make a really high quality print you would use lesser you would use a smaller layer height but you would use also more filament at the same time I'm going to speed it up actually so I'll just slice actually I'll see another important one is printer settings so when you get to print your first you need to calibrate a lot this one calibrates in for the Z offset to up and down when it actually moves over to the X or to X axis it would hit the build plate and thus actually if you move the tape on here you'll see like a lot of scratch marks and to make sure that the slice is correctly calibrated you need to put in rep-wrap there's also another type of software too or like t-cut if you use a maker logical these are repertor hose and there's also like I said this is based on what type of printer you have and also what type of extruder you use and my filament so I use a hatchbox filament so it's diameter is around 1.75 and it's PLA so I stick around 220 and I keep my fan on auto cooling so it cools alright that's the basics of slicer and repertor hose and I want to make credits to Thinkiverse, repertor hose, slicer and Autodesk for when you use Tinkercad and that's diameter representation any questions and questions yes yes yes um so I think on my second day the first day I got my 3-printer to school actually I got my 3-printer yeah so I had a 3-printer new part there's a benefit actually having an open source repertor or rep-wrap you can modify or replace parts I think my next project is actually replacing the acrylic with ABS plastic how do people have very different parts that actually move when you print something isn't it stuck together or is it printing it? you can make it like that for when I did my heart, my geared heart I actually printed separately so in a way you can do both some people could design theirs and I print separately but I don't know how to do that I'm still trying to figure it out but right now I just print all the separate parts to make movable parts a nice question actually it was a bet I made a bet with my friend I said I can't build a 3-printer I was like I'm gonna prove you wrong so I was bored I had like around like I bet they'll cash like around $200 left so I went online and I won $50 after building a 3-printer it took me like a week to actually come out with a cube and collect a cube it's a lot of collaboration involved I don't think 3-printing is easy it's like an easy hobby I disagreed this is stressful man it's not a hobby, it's a job so for example you really can't leave a 3-printer going on overnight because it might and one time I was trying to 3-print a dragon and it just happened so I was about like $10 on the filament so it takes a long time it took me about a week to get comfortable with basic settings I guess that concludes my presentation get the pot by the game night tonight, that's it I think it's 8 for the kids or something like that is it? whatever you guys got the program you can figure that out but yeah, alright