JS Nation

JSNation 2022

How I've been Using JavaScript to Automate my House

 Hello my friends. Oh. How's it going? Everyone going? Well? I'm so excited. Like it's been a while since my life pandemic and this whole stuff. I'm kind of nervous, but I think this is something like my experience is work at home making my wife crazy at home. So I'm gonna give some chips about it as well. Okay, so I'm Eric. Komendo. I've been speaking about JavaScript sharing a bit of my knowledge as well. And today I'm gonna show you some content I've been doing so everything here is already online. So you can take pictures published. Please mention the event as well. So it helps us a lot as well. And here I'm gonna show some experiments using both JavaScript and c++, but don't blame me. I'm not a C++ developer. I'm just trying to experiment and actually to make my wife crazy. Right? All this talk is just to make her crazy. Well, we know that software is not just something simple, right? We know that we struggle a lot. I'm not an expert in what I've been doing. This is just experiments. Okay. So later on the QA I can show you some burnouts that I do on my Hardware. Okay, when I start working with iot stuff the first thing I was like, oh I should do I should use rasper by for everything and then I figure well, it's not actually it right so I could use raspberry and microcontrollers and I wasn't aware of what does it mean? Well sure fix this first question a Raspberry Pi is actually a supercomputer right? It's it has its own operating system. You can run games you can run processing you can use for programming as well. If you want it you can use Linux windows and a lot of other operating systems and actually it you can expend memory man. This is crazy. People are using no JS inside it to make Productions. I don't recommend it right but you can do it as well. Okay. When we go to the microcontroller word, the microcontrollers are a bit smaller thing, right we call we call then like the microservices of Hardware. It's like a small unit of processing you can run like on your walls control your lights, but it's much cheaper, right? You can buy it for one dollar sometimes on Eli Express. Well, as you can see the the whole thing is like three true 300. Oops three 20 kilobytes around right JavaScript developer doesn't care much about memory, right? So this was my first struggle and I'm gonna show you later. It's a single core but we can like simulate our friends and other things as well. But you might have you might have heard it as Arduino as well, right who have heard about Arduino. Oh so popular, right? So this is the Brazilian version like I'm Brazilian site brought some of our country as well just to show you I think okay now introduce you about what I've been doing or what the difference is for you to get some context and now I'm gonna show you some experiments in some not good things that I've been doing as well. The first stuff I was like man Raspberry Pi people are using raspber pie to create 80P servers. So boring credits. I don't care about curves anymore creating products and this kind of stuff like I should do something interesting. So I like beers. I was like one one not making my own assistant, right? So here I have my beer cane and there I have a Raspberry Pi I'm gonna show you later how it's working. But let's first understand the project right so I could have my beer cane on my main wall. I have a camera right there. And when I see a friend, I would just recognize am I my Birkin was saying oh Or just make some jokes and that's it. I was like, yeah, let's make it. Well, this is my first demo right here. I have a roster pie a super computer running inside the beer cane and then the other side I have other one to recognize friends right here. I have a camera and I'm using like Azure API. I don't know anything about machine learning here just using apis, but then I recognize my friends and then it seems a message. Should they be okay when it recognizes and oh, welcome back. This is so like the whole project was good, but turning on a lead. It's like a hello world, right? Well, I was like I should do something more interesting right? I've watched The Purge movie. I saw a kid there like moving a car with a VR glass. It was like mmm. I could do something like this. So this was my version. Well, it's an MVP right? I'm an afrontian. I'm a back-end developer. This is a back end of the highway. So here I just hacked my PS3 controller using the Bluetooth right there. I have other microcontrollers. Well just controlling the other thing and here it's working. Well, this is something good to understand like threads right? Because when you are actually dating if you try too hard like to press the horn the car just stops. So you have to make it like in different units of processing right, but it's working really well right there. Okay. Well, I start trying more at my home. So I built some wires now. We start the mess right but here I have some like interface right there. When I press a button the lights will change a bit but this will control my main door right there. Let's see like the the lights are changing I go faster there and then I can see that my door is open. Well, I had a lot of struggles here and I have a lot of caveats that we can talk a little bit more later. But yeah, it's good. It's good enough. But as I said, I have some tips for you who live with someone else. So how many of you I live with someone like parents? Okay, so you should be somewhere because your weekends should like should look like this right all the main, you know dinner table with all our hearts a lot of friends coming there making a lot of projects and I think they don't like it seeing a lot of wires right there. Okay, starting about the whole automation thing. I just moved to a bigger house right there. And I figured like at night. I have to walk through my whole home like turning off all the lights. I was like mmm. I'm a programmer. I'm a lazy person. So let's try doing something. So the whole idea here was to control first the light switch. Okay. So I I Googled it and I use the esp8266 like a microcontroller and I have a relay. Basically I send one should the relay and it will just cut the energy if I send zero it will just move keep the energy going on. Yeah, it's inverted. I I struggle a bit too to figure out as well. But yeah, I have one thing for each light and this is how it should be working. Well just turning buttons on and off wasn't enough. So I I was about to get some sensors. So I got humidity and 10% sir, so I can have like a dashboard and I will Think how I could make their life turning on and off just automatically. So this was MVP MVP, right? You can see a lot of wires right there. My wife got crazy with me. She was like no way we're gonna do this but it works right when I press the buttons we can see it working just a thing. Well, I figure out some other problem the the whole thing about how you chi is cheap, right, but the most expensive piece was to hide the wires. So this little box was more expensive the whole project so I could print it out at the whole thing. But I was like, okay, let's make my wife happy. Well, my wife approved I saw on her Instagram. She was like testing it and I was like, oh QA passed, right? For all this project. I've been using C++. I'm not a C++ developer, but I found the platformio that helps a lot too upload the code to generate the dependencies and work really well right there. We can see like you can have a yellow file that you can put all of your configurations you are dependencies and a lot of stuff but for me, I web developer this was the most interesting thing. Imagine nothing. You are not an expert as me working with Hardware. What if you put some cable in the wrong input you never gonna know right? It's already on the wall. How do we know that? So here I wrote some tests some integration tests that I publish my code to the to the board and then I see all the sensors working fine and then I can see really it's working or not. So this was really hacking for me and as a developer, I'm a loser person, right? So I've been using a note red loud code no code in this case. So here you can see how my flows in the right this the left screen for you. Right and the right screen we have the results right here. So I'm gonna show first the interface. So if you click all the buttons on the switches, you can see on the back end just changing all of the messages. You can see the temperature the humidity and here I'm gonna show some flows. Well when someone press a I'm just showing the logs here not something like confused not something hard to make it. But for the weather, I have two Json properties that I'm converting and just showing on the interface as well. And then in the last one, I'm logging some more data and actually trying to make the first MVP to make the lights turn on and off but this is just another subject. Okay? well, I was As a developer, right? We try to automate something that like you automate something that you could then in 20 minutes doing 20 12 two hours, right? So here I was like hmm. This is not smart enough because I had some buttons right and I create enough another problem. Imagine. I'm going to my main room right with my dishes. It was like, oh turn lights, right. So I put all the food on the table. I get my phone. I connect to the Wi-Fi. I open the app. I click the button and then the lights on right. You couldn't imagine in my wife right? She wasn't so happy with it. She was like, oh it's not easier just to click on the button right of engineering at my own house. So I was like, okay, let's try doing something. So this is my little brother and we were drawing a POC right there. I'm using here you trust Sonic sensor. So it's like a radar. It's just saying this signals and getting back, but the problem was red developers, right? We know that it's not a hundred percent. Sure sometimes well my my wife she's afraid of ghosts. This sensor is just reverberating. So sometimes the light just turn on imagine at the middle of the night the lights just turned on. Well, I was like, okay we have power right now. We have processing power right now that we can use. Let's try recognizing phase. So right here I use the microcontroller that no not only promises to detect faces, but to recognize that you are you man. This is five megabytes like processing power that can do a lot of stuff. Well to do my first POC. I wasn't trying to use on the machine because it was C++. It was like, oh my God, this is so messy. Oh C++ is hard. Yeah. Sure. And here I was just taking pictures staying it to my my notes red and just great gretching some screen here. You can see the video is not that good because I was just posting on the Instagram as I was getting some results. Well C++ is hard. It's really hard for me that I've never touched C++ and was like What if we try using JavaScript to reuse my knowledge from the web on the highway right choose to really feel the power. Well, I found out espirino how many of you have heard about aspirino. Oh nice asperino has a lot of benefits. I'm gonna show you later. But the first thing is, it's JavaScript, you can drag and drop stuff as well. But you can also upload your code using SSH on the over the network. So you can have all of the machine connected to the wall and over the network. You can send signals that up a little new code. So this is really really nice. well right here. One thing that we should carry is when we are using a microcontrollers. We know that the memory and processing is limited, right but here we can see it's just 120 flash that they use to make everything work with JavaScript. It's like a small a tiny interpreter that we can use JavaScript inside of it. Well, I was like, okay man really easy, right? Let's rewrite everything. Let's just convert everything to JavaScript. well I found the dogs right there and on the dogs, I was like, okay, let's just use the dogs. Let's rewrite everything and then my code was something like this. I had like an interval send the data receiving the data and sending the light density as well. And then I upload this code to my machine. well It doesn't work. Right. I just like use all the Memoir memory and processing and I was like, oh my God. I cannot use JavaScript for it. But I just changed the board to the esp32 and everything starts working again. So this is my final POC for the piece that will go to the wall and let's make it work right here. You can see a lot of logs. We back and developers love logs. Right? We have all the other stuff working right here, but you can see that the camera is not working properly yet because I haven't finished this project yet. Well JavaScript is Magic. Right? We can use a lot for a lot of stuff. And for this one. I really feel the power. So if you want to use esparino, you can use the weather the interface all the terminal and make everything work so easily this is not a tutorial right? I'm just showing some of the challenge. Well the first challenge it was meant to work on aspirino devices. So using generic devices might not work. Well the platform has a lot to improve like we have some generic errors. So we should ask Community use it more so we can improve and more and for me I felt an impostor when I see that 18K weight doesn't work. So a lot of features it's not working on this on these interpreter because it's just a small thing, right? Well and just finally some benefits right? I think this is the whole thing about this talk. You don't need your recompile the project every time when I was working with C++ was like backing forth. I compile. I see errors. I come back compiled to errors and then on the third time it works. So I was like no using JavaScript is much better that because you can do it on SSH remotely and that's been right there helps a lot many fire code you can use less memory processing and you can reuse your knowledge in JS, right your web developer. You can make something just care our mom to make your cat better to play with your friends for you if you don't want right we are Developers. Well some final words for you. I think this conference is so amazing so nice to be back. The whole thing here is for us. Just I know that correct pays the bill right making creating product creating service, but when we're trying to change ourselves when we're trying to make something for us when we are seeing like a car moving we can see a lot of new challenges and we can feel like that adrenaline. That was like, oh, I'm not sure if it's who we work but when it works it's like in describable, right? And if you're trying to start on this try adding more sensors not just moving buttons. Try to make something is marked to make decisions using it as well. And actually learn JavaScript right without a single eight. We can back to callbacks. So yeah. Tired right, but we're gonna learn a lot of vanilla JavaScript as well. Well, Our presentations are any all my my website if you want to take a look I ever think about nodejs JavaScript. I've been putting there as well. I've actually just released a new course right now. It's about no Jazz streams. If you're not learning the most powerful nodejs feature go there and see it's just on the prayer release and if you want to take a look at the videos my website follow me on Twitter. Take some pictures. Show me your experiments on Twitter. Please go there. Oh, okay. So thank you so much for having me. Thanks a lot, Eric. We're gonna go. All right. Well that was mind-blowing. I think you over engineered and I love it so I can imagine that it's a lot of fun to work on that stuff. Yeah a bit challenging first question is from Jen. I was just a compliment for your wife special dedication to your wife who resisted to divorce you still wearing a ring. Yeah. Yeah. It's that too so you can't get a divorce. So yeah smart smart. a question from Jalen Where is the best place to get started to learn how to implement similar features in my own home? Oh, it's high, right? It's like Google news, right? Oh just before going let's take a picture with everyone like with their hands through there, right? Just a second. Yeah, yeah. Sure. Let's get some tree and then we make some noise. Okay, why well, two three I'm Brazil. I have to do this, right? One more time one more time. one time three Two what? well They bet is fine on Google right or on on the YouTube. I try find new projects about James Bond on iot. There's some guys with like watches showing flames and fires on the there's martial arts, right? So this is something that we can find a lot of new stuff as well. All right. Yeah. So next question is from Brittany Joyner who made you want to build this when there are already apps and smart lights out there that you can automate these things out of the box. well I think that the first thing that we should know that we are programmer, right we learn to make things new but for me is the price. I spend like $1 in one microcontroller if I want to buy I would pay like a hundred dollars twenty dollars, right and we miss all the fun right for us to build something and to create a new product. It's very cheap free. Don't don't forget your time is also not free. Yes. Yes, but I think it's fun, right? Yeah. Yeah. All right. Um next question for from Peter opito. Have you ever tried the Arduino iot Cloud platform in your projects? No. I've tried Azure a bit. I've tried note red, but for the kind of stuff I've been doing I've more I spend more time trying to wire the cables then like programming or configuring the clouds itself, right? Okay, and last question from Anonymous, how is the support for home kids? Oh for homekit for Apple homekit. Oh, I have no idea. I haven't write some plugins. Oh, maybe Google Assistant Google assistant skills. Yeah, Alexis skills, but hey, that's I guess a whole different project. I hope no actually on the beer cane that I built I can install there and make everything to connected and to make decisions as well. Yeah, very cool. I I enjoyed your talk really a lot Eric. So thanks also for filling the spot on such short notice. So thanks a lot Eric if you want to talk to Eric go to the speaker boots and we'll talk about how much more thank you very good value.

Erick Wendel

WebBluetooth – the Missing Link

 Hello everyone. My name is Nicole as Maxim said I'm a freelance from the developer from Switzerland. I'm also part of the Google developer experts program, which basically means that I just spend way too much of my free time playing around with all the new web Technologies and browser apis. And today I'm here to take you through my journey with the web Bluetooth API. so browsers have been built around this idea that I would request data from a server and they would render that data. So server. So browsers have always been great a communicating with servers that might be hundreds of kilometers away. But it was always quite difficult to interact with devices that were right next to the browser. Now with the whole movement of progressive web apps with the project Fugu we have seen a couple of new apis. We have seen the web USB web serial API web hid API Anton so forth and all they all try to fill this gap between the browser and the peripheral devices. But let's start with some Basics. So Bluetooth is a wireless technology standard to exchange data that uses the same frequency as wireless LAN. but it sends or it tends really small amount of data over your other short distance. And if you now think about this old and back in frustrating experience you had with your first smartphones or for cell phones. I have very good news for you because that was the old Bluetooth classic. Right now with Bluetooth 4.0. We also have ble which stands for Bluetooth low energy. And that's a completely new standard that was built specifically for for iot devices. So it's very energy efficient. And it also runs over quite a long distance. And with web Bluetooth, we always talk about ble because that's a standard that was implemented. So Bluetooth normally works like this you would have a central device which is a very the more capable device in the in terms of CPU and battery usage and then you would have peripheral devices. Now. We also refer to them as the client and the server and that's very important that you can connect one Central device to multiple peripheral devices. But one peripheral device can only be connected to one Central device at the same time. That's also the reason why for example, you can connect your headphones and your smartwatch to the same smartphone, but you can't connect your headphones to two smartphones at the same time. That's just not possible. Now as part of ble and the Bluetooth special interest group introduced the GATT the generic attribute profile and that's basically the way how the peripheral device exposes its data to the client. So you would have to jtt server that contains a list of Gatt Services each service is then just a group of characteristic and now one characteristic identifies a value and it also defines what operations can be performed on that value. For example, if you have a battery level there, it makes sense that you can read the battery level and you also want to be notified when the battery level changes on the device. but it doesn't make sense to make that writable because you can't just override the battery level and then expect it to be magically at 100% if that would be the case all our energy problems or climate change problems would be solved but that's not But if you have the flight direction of a drone, for example, there it does make sense or let's say it's a crucial that you can control the direction that you can't control your drone there. It needs to be writable. Now A Creative value is then a very low level data structure. So it's just an array of bytes. And if you now look at the right side here, I have the implementation of HTTP server from the playbub sphere which is a really light bulb and we have the services we have the characteristic and that's very important to mention that services and characteristics are not really identified by their names but by uuids so there's a list of standard uuids maintained by the Bluetooth special interest group that cover common use cases like information about the device or battery levels or in we do know that on each device the characteristic or let's say the service 180 or F would be the battery service, but then we also have non-standard services like in that example the the light service and the light characteristic and there we can reach for either 128 bits or long unique uuids. Or we can choose 16 material IDs that are not yet specified in that case. We have ffs your f for the light service and FFC for the characteristic. the tricky part but the tricky part is now how are those values structured? The first two are pretty basic. That's basically just a utf-8 encoded string. The battery level is just the decimal representation of our byte. So a 5A would be 90% and now for the for the custom characteristics there we need to reach out for the documentation and the most cases there is no documentation. But in our case we have documentation, so we do know that the playbox fear has four bytes for LEDs inside the light bulb. And now with the value of each byte you can control the intensity of one of those LED. And the cool thing is now with red green and blue. You can basically create any color that we have in the RGB color space. But now that we have the basics, let's have a look at the web API. So the web API is pretty straightforward. First you have to request the device you can pass a set of filters and we also need to specify the services that we will use later on. And when that code is executed. The user will see this prompt there. We can select one of all the devices that match the filters we defined on our case. We want to filter by the name playbox Sphere. And therefore we can then select the table sphere once the user connects to that. We can call device.jatt.connect to connect to the server. To read the value we can first get to the service using the uuid and also the characteristic using the uuid. now on the characteristic we can call characteristic.read Value to Read the value and in that case, we will receive a data View. And we are now interested in the first byte of the data view in a decimal format. So right now we just want to console log the battery level of the characteristic of that device. Since the battery characteristic also allows the notify operation. We can add in an event listener characteristic value changed and that will be fired whenever the battery level changes on the device. It's very important here as well that we need to call.star Notifications because in the sake of or for the sake of battery efficiency those events are not sent by default. To write values again. We need to request the service the characteristic this time for the light service. Now we can read the value as before but now we're interested in the RGB value. So the second the third and the fourth value and now to write a value. We can call the right value without a response or with response that depends on the device you are using. But both function they accept a new data View. So in that case, you will just overwrite the current data View and that will change the characteristic on the device. Now let's start with a little demo. First of all, my slides are browser or they run in the browser so that I can do is I can just open up the console. And those are exactly the commands you have seen before. first of all Let's copy this. I'm not a track pack trackpad person, but I think that will work. Now we can connect to the playbub sphere. On the device you can then select server. On the server we can then select. The slight service and on the light service. We can now. Write a new value. So in our case we want to overwrite that value and we expect the light bulb to turn. Yeah, okay. I forgot to sorry. I forgot to get the characteristic let's try again. Here we go. No, sorry. wait Okay, let's try that again. It's always nice to do life coding or live demos on a conference. So let's go again. Let's connect. service now characteristic and now the moment of truth Will it be blue? Yes, they will. Okay. So in the end. With web Bluetooth, we are basically not able to control any ble device that we have around us. But there's one problem. Reverse engineering Bluetooth devices are huge pain before I found the playbub sphere. I tried a couple of different RGB light bulbs. And the problem is since there is no standard for light. Each manufacturer has their own set of characteristics their own New Year IDs, and I was just they're trying to make sense of this and that was just a huge waste of time and energy and on the other hand there is this whole new world right outside the window the world of arduino's Raspberry Pi is Pecos hardware and I mean, I'm front and developer. I never came in touch with hardware at any point in my career, but I thought well, let's just go on a little Adventure. And it the adventure turned out to be a pretty deep rabbit hole and I'm still somewhere down there. But I managed to create this BLD buzzer, which is an Arduino Nano ARP 240, which is a the latest not Arduino chip or module and it's a and there's also a Bluetooth chip on the board. So what I have here, basically, it's just one server one service one characteristic that has one bite. And that byte can either be 0 when it's in default state or it can be 255 when it's pressed. And now my web application uses web Bluetooth to listen to the characteristic value change event and whenever it changes from 0 to 255, I will just show the next slide. the next thing I'm using this the whole time, but the problem is you maybe you don't see it. Okay. The next thing I built is this little car. It's again an Arduino Nano. It's called speed Wheels. It's not that fast, but my son came up with the name, and I'm fine with that. So it's an Arduino Nano connected to those Motors and to a LED RGB ring. And the problem I had here is my C++ knowledge is very very limited. And I'm still it's still very limited and my ideas were huge. So what I had to do is I wanted to keep the device part very very small very easy and move all the heavy logic to the to the client to JavaScript where I feel comfortable. So what I did is I basically one function that accepts two values one for the left wheel one for the right wheel between 0 which would be full speed backward 100, but would be stopped and 200 full speed forward. And since those value are values are in the range of one byte we can now. Use one characteristic with two bytes one for the left wheel one for the right wheel. I also have a demo. And let's hope that this time it will work as expected. I'm also since a I have my stage here. So everyone can see it? So since a web application is cross-platform by default. I can just use my smartphone. With the same web application I have on my desktop. I can now connect two speed Wheels. and and can now Yeah, okay, that works. But the problem is I mean it's cool arrow keys work, but they're very very boring. So what I came up is or I tried to to. Get the full or to work with the full potential of the web platforms or for example, we do have a gyroscope on the smartphone. So what I can do now is I can use the device orientation API. to convert the movement of my Oh. Okay. It's still running so it does work. but I mean the device orientation is great, but We also do we do have some fancy stuff in the web. For example, we have machine learning. And as you might know we can use tensorflow.js on this on the inside the browser. And what I did is I have a hand or I've took a hand gesture model. Here we go. And now I really hope that the light is right, but I can what I do is basically and I analyzed the given video input and I try to convert the hand gestures into characteristic to characteristic right event. And it has some delay, but it does work. so To sum it all up. We have this very powerful new apis. We can connect them to the full potential of the web platform. And I ask myself how far can we go? I mean we do have or I said in the beginning that we can connect multiple peripheral devices to one Central device. But can you also connect multiple devices to one web application? If so, where are the limits and I didn't found any limits. So me and my little friends here, we created a little demo where I am using the dev audio API to analyze a given audio input and there I can now interact with the audio and for example, I can get the volume of a given frequency or do beat and everything. and let's hope the audio as on as well. That should be it. I didn't want to do that in a live demo because there are so many things that need to work out. We can connect the light bulb. I have two little LED matrixes where I can. Set the value of each of those LEDs. I need to speed up the process a little because it's just takes too much time. But once all the devices are connected. We can take you a little bit back in time. and so so in the end all your feet in the video is the web application and analyzes the audio input and then sends a lot of small commands to my devices. So that was it from my side. It was great being here. I have one thing to say if you are a web developer if you are a front-end developer and I think most of you are and you ever wanted to tip your toes into Harvard development now it is the perfect time thank you very much. My slides are all online. So you will have all the links to the threats and to the Twitter threads and the GitHub programs as well. And if there are any questions, I think we do have a couple of minutes. Yes. Yes. There are some questions. Let's just take our places here MC speaker. Yeah remark and I kind of ask how AV team to put questions on the big screen. Yay. Yes. So actually how do you control two devices if that's ever possible at all? Well, it is possible. Maybe you have seen the two LED matrixes. They do have the same name and you can just connect to those and you have then two instances of that device. So in the end that's perfectly fine. No problem. Great. Well, that's very interesting question. Can you use Bluetooth to control your device if you're far away from it? well, of course, it needs to be in the range in the Bluetooth range because you can't connect otherwise But I think this is not very simple question. I mean, yeah, of course, it's not possible by bluetooth. Right? So point of Bluetooth is being in proximity, but why not to create some kind of library to provide full text. So if you're out of range with Bluetooth, maybe you could try your life with some Cloud connection and bypass comments from your control center. We are other channels. So and also Bluetooth isn't it's not that the range is not that small because with Bluetooth 5.0. I have read that it should be possible to to communicate over 100 meters or more. So it's pretty it's pretty okay. I would say I'm not sure how long it will take. But it should be possible. Yeah, just think about this kind of fallback Library could be at least nominee for for the next year in one of this. Nominations, maybe I don't know. The most fun project or most exciting project? Okay, nevertheless the last question. Oh, no not actually last so I let's decade to more minutes first simple one. Is this API available in all browsers? And what's about like cross platform support? Well, no, it's not the problem is it is a variable in all chromium-based browser already since 2017. It's not available for example in. In webkit, but also means that we can't use it on iOS because all the browser Niles need to use webview under the hood. but there is some hope because I think right now there are some regulatory changes where maybe Apple will be forced to to allow other browser engines on iOS And also I've seen lately. Some movement in the whole webkit ecosystem. So now that they will allow push notifications. Maybe they were also change their mind about all the the hardware API because that's all so the case for web USB web serial all the schools things, but right now it's only available in chromium based browsers. Yeah, and I'd say progressive enhancement and the future protection are your best friends. Thank you very much Nico. Give me five. Yeah. Thank you very much.

#iot