{"video_id":"xF_SR6aUKHg","title":"It's time. - Open Source Smartwatch","channel":"Linus Tech Tips","show":"Linus Tech Tips","published_at":"2021-05-05T14:53:29Z","duration_s":649,"segments":[{"start_s":0.08,"end_s":6.879,"text":"oh god this is it a smart watch but it just ah","speaker":null,"is_sponsor":0},{"start_s":5.44,"end_s":13.759,"text":"oh yeah look there it is it's still keeping time wearables some of them are okay but a","speaker":null,"is_sponsor":0},{"start_s":11.04,"end_s":17.76,"text":"lot of them are less okay between their unintuitive interfaces patchy app","speaker":null,"is_sponsor":0},{"start_s":15.679,"end_s":22.88,"text":"compatibility subpar battery life and nasty habit of phoning home with all of","speaker":null,"is_sponsor":0},{"start_s":20.08,"end_s":26.8,"text":"your most intimate details it is no wonder that someone finally said it","speaker":null,"is_sponsor":0},{"start_s":25.359,"end_s":30.4,"text":"forget this i'm gonna build my own smart watch","speaker":null,"is_sponsor":0},{"start_s":28.88,"end_s":36.399,"text":"with blackjack and with this message from our sponsor smart","speaker":null,"is_sponsor":0},{"start_s":33.76,"end_s":40.96,"text":"deploy enables it admins to manage pcs from the cloud you can push Windows apps","speaker":null,"is_sponsor":0},{"start_s":38.64,"end_s":44.64,"text":"BIOS updates and security patches to any device without leaving your desk get","speaker":null,"is_sponsor":0},{"start_s":42.8,"end_s":49.76,"text":"your exclusive free software worth over eight hundred dollars at smartdeploy.com","speaker":null,"is_sponsor":0},{"start_s":47.28,"end_s":49.76,"text":"Linus","speaker":null,"is_sponsor":0},{"start_s":56.879,"end_s":64.64,"text":"i'm gonna be up front we didn't do this whole thing on our own in fact all we","speaker":null,"is_sponsor":0},{"start_s":62.32,"end_s":69.36,"text":"really did was print ourselves a neat watch case and wrist strap","speaker":null,"is_sponsor":0},{"start_s":66.799,"end_s":74.4,"text":"but what's cool about this project is that we could make this watch if we","speaker":null,"is_sponsor":0},{"start_s":72.0,"end_s":79.759,"text":"wanted to both the hardware and the software are completely open source and","speaker":null,"is_sponsor":0},{"start_s":77.6,"end_s":84.08,"text":"the name of the project you ask i'm glad you did it's open source smartwatch","speaker":null,"is_sponsor":0},{"start_s":82.56,"end_s":88.72,"text":"it's a good name paul smith the lead is a full stack","speaker":null,"is_sponsor":0},{"start_s":86.4,"end_s":91.84,"text":"cloud developer by day maker by night and you might think that someone who","speaker":null,"is_sponsor":0},{"start_s":90.32,"end_s":97.6,"text":"works in cloud computing would have wanted every aspect of their project to","speaker":null,"is_sponsor":0},{"start_s":94.56,"end_s":99.6,"text":"synchronize with cloud servers but it's","speaker":null,"is_sponsor":0},{"start_s":97.6,"end_s":104.56,"text":"actually quite the opposite while wearables might not be on your radar the","speaker":null,"is_sponsor":0},{"start_s":102.479,"end_s":108.96,"text":"biggest tech giants in the world have latched onto them and for good reason","speaker":null,"is_sponsor":0},{"start_s":106.96,"end_s":113.04,"text":"besides being an ever-present link to your smartphone they are the perfect","speaker":null,"is_sponsor":0},{"start_s":110.799,"end_s":118.479,"text":"opportunity to load somebody up with sensors and while those sensors can do","speaker":null,"is_sponsor":0},{"start_s":116.079,"end_s":122.88,"text":"extremely valuable things like measure your heart rate or your movement","speaker":null,"is_sponsor":0},{"start_s":121.04,"end_s":127.52,"text":"the unseen bonus for these tech companies is the absolute treasure trove","speaker":null,"is_sponsor":0},{"start_s":124.96,"end_s":132.72,"text":"of data that can be harvested from them that is what made paul so uncomfortable","speaker":null,"is_sponsor":0},{"start_s":130.319,"end_s":138.319,"text":"starting back in 2018 then he began with an e-ink display an older esp module and","speaker":null,"is_sponsor":0},{"start_s":135.92,"end_s":141.84,"text":"a handful of surface mount components the first test mule might not have been","speaker":null,"is_sponsor":0},{"start_s":139.68,"end_s":147.52,"text":"the prettiest thing in the world but it was clearly a strong start because look","speaker":null,"is_sponsor":0},{"start_s":144.48,"end_s":149.44,"text":"where we are just a few short years","speaker":null,"is_sponsor":0},{"start_s":147.52,"end_s":152.72,"text":"later like look at this thing it's a little on the","speaker":null,"is_sponsor":0},{"start_s":151.2,"end_s":157.84,"text":"bulky side but damn it's wearable you know","speaker":null,"is_sponsor":0},{"start_s":155.76,"end_s":160.56,"text":"like because it's a wearable get it but i just mean it's not luggable like","speaker":null,"is_sponsor":0},{"start_s":159.599,"end_s":165.68,"text":"it's it's wearable it's a little rough around the edges","speaker":null,"is_sponsor":0},{"start_s":164.4,"end_s":170.48,"text":"literally like ow but there it is","speaker":null,"is_sponsor":0},{"start_s":168.64,"end_s":176.959,"text":"the goal was to make a watch that supported modern conveniences gps maps","speaker":null,"is_sponsor":0},{"start_s":174.239,"end_s":182.159,"text":"and tracking but stored the data locally on a micro sd card and paul has actually","speaker":null,"is_sponsor":0},{"start_s":180.08,"end_s":188.08,"text":"got all of that going but the version that i'm wearing is the light edition","speaker":null,"is_sponsor":0},{"start_s":184.8,"end_s":190.72,"text":"that means no gps or sd expansion but it","speaker":null,"is_sponsor":0},{"start_s":188.08,"end_s":194.0,"text":"also means a smaller pcb and therefore body size","speaker":null,"is_sponsor":0},{"start_s":192.0,"end_s":198.56,"text":"as far as the software goes there are a few watch faces and some hardware demos","speaker":null,"is_sponsor":0},{"start_s":196.48,"end_s":203.2,"text":"but that's about it now the light edition here started out","speaker":null,"is_sponsor":0},{"start_s":200.319,"end_s":208.08,"text":"as a side quest but has become a pretty popular one just a few days ago pcb","speaker":null,"is_sponsor":0},{"start_s":205.84,"end_s":212.64,"text":"manufacturer lilligo made a trial run of these watch assemblies that sold out","speaker":null,"is_sponsor":0},{"start_s":209.84,"end_s":215.84,"text":"within minutes and that bodes really well for getting this hardware into the","speaker":null,"is_sponsor":0},{"start_s":214.08,"end_s":219.68,"text":"hands of a community of people that will build upon paul's work and develop new","speaker":null,"is_sponsor":0},{"start_s":218.319,"end_s":224.72,"text":"software for it but then let's say they do that what would you","speaker":null,"is_sponsor":0},{"start_s":222.64,"end_s":228.64,"text":"get every part of our watch is 3d printed even the flexible strap which","speaker":null,"is_sponsor":0},{"start_s":227.04,"end_s":233.84,"text":"before we did this video i didn't even know that you could print such like","speaker":null,"is_sponsor":0},{"start_s":231.04,"end_s":239.28,"text":"rugged flexible things that's super neat at first glance here we've got a 200 by","speaker":null,"is_sponsor":0},{"start_s":236.239,"end_s":242.159,"text":"200 pixel round ips display of course","speaker":null,"is_sponsor":0},{"start_s":239.28,"end_s":246.08,"text":"it's not quite 4000 pixels because it's round but it looks pretty good from all","speaker":null,"is_sponsor":0},{"start_s":244.56,"end_s":250.64,"text":"angles and has more than ample brightness below that we've got four","speaker":null,"is_sponsor":0},{"start_s":248.159,"end_s":254.48,"text":"buttons and a micro usb port for data transfer and charging","speaker":null,"is_sponsor":0},{"start_s":252.239,"end_s":257.68,"text":"the top left button is reset then the other three are utility buttons that","speaker":null,"is_sponsor":0},{"start_s":256.079,"end_s":261.44,"text":"vary depending on what app you're using and i gotta say","speaker":null,"is_sponsor":0},{"start_s":259.12,"end_s":265.04,"text":"i am so glad to see hardware buttons like i use my pebble time for music","speaker":null,"is_sponsor":0},{"start_s":263.36,"end_s":270.0,"text":"control when i'm on my motorcycle and it's like tactile buttons hello","speaker":null,"is_sponsor":0},{"start_s":267.919,"end_s":274.56,"text":"sometimes i wear gloves on this one then if we long press the","speaker":null,"is_sponsor":0},{"start_s":272.0,"end_s":278.88,"text":"lower left button like so we get a little white square that pops up and","speaker":null,"is_sponsor":0},{"start_s":276.0,"end_s":283.919,"text":"then on release we change pages so far there are only six pages the watch face","speaker":null,"is_sponsor":0},{"start_s":281.52,"end_s":288.16,"text":"a stop watch a connection test to link to the wi-fi you configured a ball and","speaker":null,"is_sponsor":0},{"start_s":286.24,"end_s":293.36,"text":"cross-hair test for the accelerometer this could kind of pass for a game right","speaker":null,"is_sponsor":0},{"start_s":290.24,"end_s":296.479,"text":"how long can you hold your ARM level","speaker":null,"is_sponsor":0},{"start_s":293.36,"end_s":298.72,"text":"and finally some system info paul was","speaker":null,"is_sponsor":0},{"start_s":296.479,"end_s":303.28,"text":"also nice enough to do a custom page for us that actually plays our intro which","speaker":null,"is_sponsor":0},{"start_s":301.28,"end_s":306.639,"text":"is super neat it has some issues you can actually see","speaker":null,"is_sponsor":0},{"start_s":305.199,"end_s":310.08,"text":"there's a bit of artifacting in the beginning of the animation but","speaker":null,"is_sponsor":0},{"start_s":308.72,"end_s":314.4,"text":"considering he slapped this together in 20 minutes i think i'll give him a pass","speaker":null,"is_sponsor":0},{"start_s":312.479,"end_s":319.12,"text":"now because it's not all sealed up with an insane amount of adhesive all we have","speaker":null,"is_sponsor":0},{"start_s":316.72,"end_s":324.0,"text":"to do to take it apart is remove i mean we gotta get the strap working","speaker":null,"is_sponsor":0},{"start_s":322.0,"end_s":326.88,"text":"and then all we have to do is take off these four screws to show you what's","speaker":null,"is_sponsor":0},{"start_s":325.919,"end_s":331.52,"text":"inside ifixit score 10 out of 10.","speaker":null,"is_sponsor":0},{"start_s":329.6,"end_s":336.24,"text":"just like the shirts at lttstore.com will make you a 10 out of 10. if you","speaker":null,"is_sponsor":0},{"start_s":333.68,"end_s":336.24,"text":"know what i mean","speaker":null,"is_sponsor":0},{"start_s":337.6,"end_s":341.68,"text":"okay so we just gotta give it a little pop","speaker":null,"is_sponsor":0},{"start_s":341.919,"end_s":348.56,"text":"there's the screen gotta be careful all right there we go so under the","speaker":null,"is_sponsor":0},{"start_s":346.8,"end_s":354.88,"text":"screen you find the brains of the operation or well okay actually it's on","speaker":null,"is_sponsor":0},{"start_s":351.68,"end_s":357.28,"text":"the underside of this oh good lord","speaker":null,"is_sponsor":0},{"start_s":354.88,"end_s":362.08,"text":"okay i've completely broomed it colin all the buttons fell out there it is","speaker":null,"is_sponsor":0},{"start_s":359.44,"end_s":367.919,"text":"that right there is the open smartwatch pcb in all of its glory it's just 36","speaker":null,"is_sponsor":0},{"start_s":365.68,"end_s":373.08,"text":"millimeters in diameter so that's 1.4 inches for you liberians and its heart","speaker":null,"is_sponsor":0},{"start_s":370.319,"end_s":378.72,"text":"is this tiny little chip right here the ttgo32 micro it's a system and package","speaker":null,"is_sponsor":0},{"start_s":376.24,"end_s":383.039,"text":"module based on the esp32 made by expressif the esp line of chips has","speaker":null,"is_sponsor":0},{"start_s":381.039,"end_s":388.0,"text":"absolutely surged in popularity lately due to their low cost large feature set","speaker":null,"is_sponsor":0},{"start_s":385.6,"end_s":391.919,"text":"and diminutive size this one in particular is actually even smaller than","speaker":null,"is_sponsor":0},{"start_s":390.0,"end_s":398.479,"text":"most of them about half the area of a normal esp32 measuring at just 13.3 by","speaker":null,"is_sponsor":0},{"start_s":395.68,"end_s":402.479,"text":"19.2 millimeters and this tiny powerhouse is an absolute bargain at","speaker":null,"is_sponsor":0},{"start_s":400.639,"end_s":406.8,"text":"around seven dollars not only is it a very capable processor","speaker":null,"is_sponsor":0},{"start_s":405.039,"end_s":410.56,"text":"you can even run python on it it has built-in wi-fi and bluetooth and a huge","speaker":null,"is_sponsor":0},{"start_s":409.199,"end_s":414.16,"text":"variety of open source tools and libraries to build upon so it's a","speaker":null,"is_sponsor":0},{"start_s":412.72,"end_s":418.4,"text":"logical choice for someone who's bootstrapping a small device like this","speaker":null,"is_sponsor":0},{"start_s":416.24,"end_s":423.199,"text":"one we've actually been using a relative of this guy in some of our own projects","speaker":null,"is_sponsor":0},{"start_s":420.4,"end_s":426.08,"text":"here at LMG now we're not going to go too deep into the pcb design here","speaker":null,"is_sponsor":0},{"start_s":425.199,"end_s":430.319,"text":"because frankly we're not qualified however the","speaker":null,"is_sponsor":0},{"start_s":428.24,"end_s":433.84,"text":"fine folks over at hackster.io have written an excellent breakdown of this","speaker":null,"is_sponsor":0},{"start_s":431.919,"end_s":437.12,"text":"entire board so if you want to dive into the components we're going to have that","speaker":null,"is_sponsor":0},{"start_s":435.199,"end_s":441.599,"text":"linked in the comments for you to keep it simple though this light version of","speaker":null,"is_sponsor":0},{"start_s":439.36,"end_s":446.319,"text":"the open smartwatch packs a barometer tri-axial accelerometer a real-time","speaker":null,"is_sponsor":0},{"start_s":443.919,"end_s":450.639,"text":"clock and all of the power conversion and charging ics that are needed to keep","speaker":null,"is_sponsor":0},{"start_s":448.0,"end_s":455.52,"text":"this thing running and run it will in fact by pulse calculations the 450","speaker":null,"is_sponsor":0},{"start_s":453.36,"end_s":459.599,"text":"milliamp hour single cell lipo down here should give you up to 50 days of sleep","speaker":null,"is_sponsor":0},{"start_s":457.68,"end_s":463.759,"text":"time due to all the power conserving features that are built into the board","speaker":null,"is_sponsor":0},{"start_s":461.44,"end_s":467.919,"text":"and the software although of course feature creep like you know say for","speaker":null,"is_sponsor":0},{"start_s":465.599,"end_s":472.24,"text":"example watch faces that are more than just a thing moving like this are","speaker":null,"is_sponsor":0},{"start_s":469.599,"end_s":475.44,"text":"probably going to reduce that and guys","speaker":null,"is_sponsor":0},{"start_s":474.16,"end_s":479.199,"text":"that's it that's the whole thing","speaker":null,"is_sponsor":0},{"start_s":477.199,"end_s":482.56,"text":"at least for the electronic side of it for proof of concept we pulled down some","speaker":null,"is_sponsor":0},{"start_s":481.039,"end_s":486.8,"text":"of the cad files for the project and gave them a go ourselves in our prusa","speaker":null,"is_sponsor":0},{"start_s":484.479,"end_s":491.12,"text":"sl1 resin printer and made this case which is a variant that supports 20","speaker":null,"is_sponsor":0},{"start_s":488.8,"end_s":495.28,"text":"millimeter spring pin watch bands and oop well okay we got the tolerances","speaker":null,"is_sponsor":0},{"start_s":493.68,"end_s":500.479,"text":"off just a little bit on that one but hey generally speaking it feels a lot more","speaker":null,"is_sponsor":0},{"start_s":498.08,"end_s":503.44,"text":"finished because like men those resin printers","speaker":null,"is_sponsor":0},{"start_s":502.16,"end_s":507.44,"text":"like basically feels so good by the way if you guys are","speaker":null,"is_sponsor":0},{"start_s":505.199,"end_s":511.44,"text":"into 3d printing get subscribed because we have some really cool stuff in the","speaker":null,"is_sponsor":0},{"start_s":509.039,"end_s":515.039,"text":"works we are making a case and we're actually checking out a chocolate","speaker":null,"is_sponsor":0},{"start_s":512.88,"end_s":518.08,"text":"printer now of course","speaker":null,"is_sponsor":0},{"start_s":516.32,"end_s":523.2,"text":"for the average consumer today the open smartwatch isn't very","speaker":null,"is_sponsor":0},{"start_s":521.12,"end_s":526.399,"text":"smart really at all it doesn't even have on-risk","speaker":null,"is_sponsor":0},{"start_s":524.32,"end_s":530.32,"text":"notifications so um","speaker":null,"is_sponsor":0},{"start_s":527.519,"end_s":534.24,"text":"pretty much all it does is tell the time which means you might be wondering why","speaker":null,"is_sponsor":0},{"start_s":532.08,"end_s":537.839,"text":"we bothered to feature it on Linus tech tips","speaker":null,"is_sponsor":0},{"start_s":535.12,"end_s":540.32,"text":"the reason is that we really like paul's moxie","speaker":null,"is_sponsor":0},{"start_s":538.959,"end_s":545.04,"text":"paul thinks that you should at least have the choice to keep your data to","speaker":null,"is_sponsor":0},{"start_s":542.48,"end_s":549.279,"text":"yourself and we want to see this project become a success","speaker":null,"is_sponsor":0},{"start_s":546.56,"end_s":554.959,"text":"yeah there's no app store but there's also no micro transactions no monthly","speaker":null,"is_sponsor":0},{"start_s":551.76,"end_s":557.36,"text":"access plans and no cloud phoning home","speaker":null,"is_sponsor":0},{"start_s":554.959,"end_s":561.76,"text":"just a cool tech project that we are rooting for along with other similar","speaker":null,"is_sponsor":0},{"start_s":559.76,"end_s":565.279,"text":"ones like the pine time which is made by the same folks that brought us the pine","speaker":null,"is_sponsor":0},{"start_s":563.2,"end_s":569.36,"text":"phone that you saw in ShortCircuit and the watchi both of those are also open","speaker":null,"is_sponsor":0},{"start_s":568.24,"end_s":573.2,"text":"source these sorts of projects hardly ever get","speaker":null,"is_sponsor":0},{"start_s":571.36,"end_s":577.36,"text":"the same sort of traction that big consumer bucks can bring to a device but","speaker":null,"is_sponsor":0},{"start_s":575.68,"end_s":582.48,"text":"it's really important to us that they continue to exist so guys if you've got","speaker":null,"is_sponsor":0},{"start_s":580.0,"end_s":586.399,"text":"the time and you've got the skills reach out to the developers in the link below","speaker":null,"is_sponsor":0},{"start_s":584.399,"end_s":589.92,"text":"if you want to help them move forward and while you're down looking at the","speaker":null,"is_sponsor":0},{"start_s":588.08,"end_s":593.36,"text":"links below maybe move forward with building your own website with our","speaker":null,"is_sponsor":0},{"start_s":591.279,"end_s":597.36,"text":"sponsor squarespace with squarespace it's easy to make your own website and","speaker":null,"is_sponsor":0},{"start_s":595.279,"end_s":600.56,"text":"it can do almost anything they've got award-winning templates that'll help","speaker":null,"is_sponsor":0},{"start_s":598.72,"end_s":603.68,"text":"make your website stand out instead of looking like it's from the 90s and if","speaker":null,"is_sponsor":0},{"start_s":602.08,"end_s":606.8,"text":"you're looking to open a business online selling products they have you covered","speaker":null,"is_sponsor":0},{"start_s":605.279,"end_s":611.839,"text":"there too squarespace can help you showcase what you're selling in a modern style and they've got inventory","speaker":null,"is_sponsor":0},{"start_s":610.0,"end_s":616.12,"text":"management with no limit to how many items you can sell even we use","speaker":null,"is_sponsor":0},{"start_s":613.68,"end_s":620.0,"text":"squarespace both linusmediagroup.com and ltxexpo.com were built quickly using","speaker":null,"is_sponsor":0},{"start_s":618.48,"end_s":623.92,"text":"squarespace actually we put so little effort into those sites squarespace","speaker":null,"is_sponsor":0},{"start_s":621.6,"end_s":627.36,"text":"really is fantastic and if you get stuck they've got a 24 7 support team that is","speaker":null,"is_sponsor":0},{"start_s":625.839,"end_s":632.24,"text":"ready to help you out so go to squarespace.com LTT and get 10 off today","speaker":null,"is_sponsor":0},{"start_s":630.72,"end_s":636.399,"text":"we hope you guys enjoyed us taking a look at this neat little watch project","speaker":null,"is_sponsor":0},{"start_s":634.32,"end_s":640.56,"text":"and if you like sort of out there wearables why not take a look at our","speaker":null,"is_sponsor":0},{"start_s":638.0,"end_s":645.04,"text":"video covering the nubia alpha a device that i absolutely loved even though","speaker":null,"is_sponsor":0},{"start_s":643.2,"end_s":650.36,"text":"objectively speaking it was just atrocious","speaker":null,"is_sponsor":0},{"start_s":646.88,"end_s":650.36,"text":"it's really bad","speaker":null,"is_sponsor":0}],"full_text":"oh god this is it a smart watch but it just ah oh yeah look there it is it's still keeping time wearables some of them are okay but a lot of them are less okay between their unintuitive interfaces patchy app compatibility subpar battery life and nasty habit of phoning home with all of your most intimate details it is no wonder that someone finally said it forget this i'm gonna build my own smart watch with blackjack and with this message from our sponsor smart deploy enables it admins to manage pcs from the cloud you can push Windows apps BIOS updates and security patches to any device without leaving your desk get your exclusive free software worth over eight hundred dollars at smartdeploy.com Linus i'm gonna be up front we didn't do this whole thing on our own in fact all we really did was print ourselves a neat watch case and wrist strap but what's cool about this project is that we could make this watch if we wanted to both the hardware and the software are completely open source and the name of the project you ask i'm glad you did it's open source smartwatch it's a good name paul smith the lead is a full stack cloud developer by day maker by night and you might think that someone who works in cloud computing would have wanted every aspect of their project to synchronize with cloud servers but it's actually quite the opposite while wearables might not be on your radar the biggest tech giants in the world have latched onto them and for good reason besides being an ever-present link to your smartphone they are the perfect opportunity to load somebody up with sensors and while those sensors can do extremely valuable things like measure your heart rate or your movement the unseen bonus for these tech companies is the absolute treasure trove of data that can be harvested from them that is what made paul so uncomfortable starting back in 2018 then he began with an e-ink display an older esp module and a handful of surface mount components the first test mule might not have been the prettiest thing in the world but it was clearly a strong start because look where we are just a few short years later like look at this thing it's a little on the bulky side but damn it's wearable you know like because it's a wearable get it but i just mean it's not luggable like it's it's wearable it's a little rough around the edges literally like ow but there it is the goal was to make a watch that supported modern conveniences gps maps and tracking but stored the data locally on a micro sd card and paul has actually got all of that going but the version that i'm wearing is the light edition that means no gps or sd expansion but it also means a smaller pcb and therefore body size as far as the software goes there are a few watch faces and some hardware demos but that's about it now the light edition here started out as a side quest but has become a pretty popular one just a few days ago pcb manufacturer lilligo made a trial run of these watch assemblies that sold out within minutes and that bodes really well for getting this hardware into the hands of a community of people that will build upon paul's work and develop new software for it but then let's say they do that what would you get every part of our watch is 3d printed even the flexible strap which before we did this video i didn't even know that you could print such like rugged flexible things that's super neat at first glance here we've got a 200 by 200 pixel round ips display of course it's not quite 4000 pixels because it's round but it looks pretty good from all angles and has more than ample brightness below that we've got four buttons and a micro usb port for data transfer and charging the top left button is reset then the other three are utility buttons that vary depending on what app you're using and i gotta say i am so glad to see hardware buttons like i use my pebble time for music control when i'm on my motorcycle and it's like tactile buttons hello sometimes i wear gloves on this one then if we long press the lower left button like so we get a little white square that pops up and then on release we change pages so far there are only six pages the watch face a stop watch a connection test to link to the wi-fi you configured a ball and cross-hair test for the accelerometer this could kind of pass for a game right how long can you hold your ARM level and finally some system info paul was also nice enough to do a custom page for us that actually plays our intro which is super neat it has some issues you can actually see there's a bit of artifacting in the beginning of the animation but considering he slapped this together in 20 minutes i think i'll give him a pass now because it's not all sealed up with an insane amount of adhesive all we have to do to take it apart is remove i mean we gotta get the strap working and then all we have to do is take off these four screws to show you what's inside ifixit score 10 out of 10. just like the shirts at lttstore.com will make you a 10 out of 10. if you know what i mean okay so we just gotta give it a little pop there's the screen gotta be careful all right there we go so under the screen you find the brains of the operation or well okay actually it's on the underside of this oh good lord okay i've completely broomed it colin all the buttons fell out there it is that right there is the open smartwatch pcb in all of its glory it's just 36 millimeters in diameter so that's 1.4 inches for you liberians and its heart is this tiny little chip right here the ttgo32 micro it's a system and package module based on the esp32 made by expressif the esp line of chips has absolutely surged in popularity lately due to their low cost large feature set and diminutive size this one in particular is actually even smaller than most of them about half the area of a normal esp32 measuring at just 13.3 by 19.2 millimeters and this tiny powerhouse is an absolute bargain at around seven dollars not only is it a very capable processor you can even run python on it it has built-in wi-fi and bluetooth and a huge variety of open source tools and libraries to build upon so it's a logical choice for someone who's bootstrapping a small device like this one we've actually been using a relative of this guy in some of our own projects here at LMG now we're not going to go too deep into the pcb design here because frankly we're not qualified however the fine folks over at hackster.io have written an excellent breakdown of this entire board so if you want to dive into the components we're going to have that linked in the comments for you to keep it simple though this light version of the open smartwatch packs a barometer tri-axial accelerometer a real-time clock and all of the power conversion and charging ics that are needed to keep this thing running and run it will in fact by pulse calculations the 450 milliamp hour single cell lipo down here should give you up to 50 days of sleep time due to all the power conserving features that are built into the board and the software although of course feature creep like you know say for example watch faces that are more than just a thing moving like this are probably going to reduce that and guys that's it that's the whole thing at least for the electronic side of it for proof of concept we pulled down some of the cad files for the project and gave them a go ourselves in our prusa sl1 resin printer and made this case which is a variant that supports 20 millimeter spring pin watch bands and oop well okay we got the tolerances off just a little bit on that one but hey generally speaking it feels a lot more finished because like men those resin printers like basically feels so good by the way if you guys are into 3d printing get subscribed because we have some really cool stuff in the works we are making a case and we're actually checking out a chocolate printer now of course for the average consumer today the open smartwatch isn't very smart really at all it doesn't even have on-risk notifications so um pretty much all it does is tell the time which means you might be wondering why we bothered to feature it on Linus tech tips the reason is that we really like paul's moxie paul thinks that you should at least have the choice to keep your data to yourself and we want to see this project become a success yeah there's no app store but there's also no micro transactions no monthly access plans and no cloud phoning home just a cool tech project that we are rooting for along with other similar ones like the pine time which is made by the same folks that brought us the pine phone that you saw in ShortCircuit and the watchi both of those are also open source these sorts of projects hardly ever get the same sort of traction that big consumer bucks can bring to a device but it's really important to us that they continue to exist so guys if you've got the time and you've got the skills reach out to the developers in the link below if you want to help them move forward and while you're down looking at the links below maybe move forward with building your own website with our sponsor squarespace with squarespace it's easy to make your own website and it can do almost anything they've got award-winning templates that'll help make your website stand out instead of looking like it's from the 90s and if you're looking to open a business online selling products they have you covered there too squarespace can help you showcase what you're selling in a modern style and they've got inventory management with no limit to how many items you can sell even we use squarespace both linusmediagroup.com and ltxexpo.com were built quickly using squarespace actually we put so little effort into those sites squarespace really is fantastic and if you get stuck they've got a 24 7 support team that is ready to help you out so go to squarespace.com LTT and get 10 off today we hope you guys enjoyed us taking a look at this neat little watch project and if you like sort of out there wearables why not take a look at our video covering the nubia alpha a device that i absolutely loved even though objectively speaking it was just atrocious it's really bad"}