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mario kart live home circuit isn't the kind of thing that we would normally

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cover in a dedicated video on Linus tech tips but as one of the coolest

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applications of augmented reality that i have seen

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well ever it merited us giving it a try even

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if it cost us almost 2 000 dollars in

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equipment and pushing it to its limits as you can see under normal

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circumstances you can race with up to four carts that is assuming that you

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have four switches and perhaps the most difficult part for friends

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with money but as we're about to see under more challenging circumstances

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it doesn't necessarily pan out like this

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the insane course that you're looking at here is not only enormous but we worked

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around nintendo's multi-level limitation and we're gonna have some incredible

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stakes the winner is going to end up with extra

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vacation time for the year of 2020

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that's right one good thing is finally coming out of this godforsaken year like

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and use our offer code Linus to save 10 at the link in the video description

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this is so cool i love this course

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there's like there's obstacles lttstore.com

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it's got everything you've got all these different surfaces that we're gonna

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drive over like smooth reflective ones

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crunchy ones metal ones we're gonna go over grates it was challenging to get it

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up to this level though because the game actually doesn't recognize multi-level

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courses and the cars aren't actually very powerful because the cars have to

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go up really gradual incline or else they just get stuck and roll back down

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and one more fun challenge recording the gameplay for you guys to enjoy now

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normally the nintendo switch supports natively recording your gameplay onto

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the device itself but whether it's because the camera is

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running or the processing is too intensive or whatever the reason is

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privacy nintendo doesn't allow you to record gameplay while mario kart live

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home circuit is running so we had to set up external recording devices and of

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course webcams get them face reactions for each one of our four switches

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there's no limit to how big of a course you can make except for the distance

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between all the multiplayer switches because there's one host switch and all

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the other switches need to be near it and distance from each person's switch to the car we needed the switches to all

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be in range no matter where in the room the cars went the thing to remember guys

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is even under ideal conditions wi-fi particularly low latency video streaming

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over wi-fi is challenging and as soon as

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you've got a combination of multiple wireless devices all streaming video at

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the same time along with additional peripherals like wireless controllers

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you are basically creating a hot ugly soup of wireless signals bouncing all

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over the place all in all this cost us i don't know somewhere between two and

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three grand worth of hardware plus the recording setups plus all the time to

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set it up so i really hope you guys enjoy it because i might be out more

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money by the end of it mapping out your course is actually really easy all you

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do is set it up and then drive the car where you want the course to be kind of

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painting on the ground you set your gates up in order and drive through them and the one thing to be aware of is

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drops the wheels need to stay in contact with the ground so in the case like over

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here we actually put some tape on the on the course to make it more of a steep

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hill than a drop off i'm ready to race boys

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i'm just going to follow at a safe distance here so i can go around all the

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people oh no no no i was in front of my controls are

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not working oh man

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come on you can do it buddy what why are you going back someone just bumped me

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and moved me up the ramp yes nice i'm telling you the opposite there

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we go there we go oh come on luigi

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i gotta oh there's items

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i want me them items

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oh no i didn't get that oh get out of the way Anthony

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hello

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i can't move i know just stop stop for a second who's luigi stop

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oh my gosh

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uh i think i'm fine no i'm good i'm good i i i'm stuck i

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think i think wait someone's got a laugh already

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Linus get the out of my way get out you get out of my way

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yeah jerk oh my accelerator

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what happened oh i cannot control this i

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cannot control it oh

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hey i need help i'm stuck

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oh wait wait no no i'm okay i'm okay i'm okay what just happened to me i'm okay

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i am not gonna fall yeah baby i'm gonna

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pass get out of my lane

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get out of the highway god

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oh if Linus hadn't done that i had that i set up the drift perfect hadn't done

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what raced properly

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oh i guess oh my god

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i'm stuck on the ramp oh laggy

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i am not going to fall baby

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you could say i'm a mario oh i'm stuck i'm stuck yeah

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riley's a low priority what the heck oh yes yes

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it's fine i didn't need you who just did someone just hit me

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hello move it mario

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you're mario okay okay wait i'm under the ramp right now come on wow is this

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actually seven laps i can't

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no

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Anthony get the hell out of my way back up you're in my way no you're in my way

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Anthony move you don't even need to pass me

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go yes

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Anthony doesn't deserve our sympathy there's a lot of crazy stuff in this

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course but that one corner oh god i haven't been able to get through it

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without reversing once your feed is so much better than mine look at mine

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what are you talking about

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i can't okay hold on i'm going to use your feed to drive my car here can i use

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the truck you know i'd i'd just like to thank the uh mushroom the toadstool

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brothers and uh for this uh for this wonderful occasion

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you know i just um hey it's okay you know i can show i

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can give you guys lessons at any time oh my god

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the t is done you need a second winner i would

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love to be but i'm stuck on this for some reason oh god what is this

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out of my way oh my god lightning deal

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sarah

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okay it's kind of working right now or not

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that's thousands of dollars well spent

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what uh what a gaming experience i don't mind losing honestly but i don't like

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losing because my equipment's malfunctioning i want to try like other

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people's cars to see if it was like significantly worse

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oh my god how did you not win by more yeah true i think i won by like two laps

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this actually works oh this is really bad

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oh my god riley's is so much better

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tell you what sarah consolation prize you can have a day too because this is

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clearly not fair that's so nice this is so stupid well

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that was a total cluster but what went wrong

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our Floatplane viewers who've had this video for over a week now had some

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suggestions some of them i'm not sure if

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i buy we had people saying they think it's because of our incline but honestly

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testing worked just fine before everybody showed up and actually tried

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to race and we had others suggesting that wiring up the switches for

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networking would fix it now that's a good idea and that's one of the

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things that i thought of at first except that our main problem was really the

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video feed between the switch and the cart which is going to be wireless

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regardless of how the switch itself connects to the internet for updates or

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whatever so realistically what i think went wrong is a combination of factors

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one there is a ton of rf

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traffic going on in here everything from our studio lights to our microphones to

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obviously all the wi-fi devices in this office

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is running over the air and we have had weird problems like microphones going

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suddenly or stuff like that the other one which i actually think is

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the bigger one is that we had no control over which frequency our wi-fi was

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running on so if it was on 2.4

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i mean oh my goodness anything even a microwave could have interfered with the

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signal and whether you're running 2.4 or

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5 gigahertz large bodies of water can have disastrous effects on wireless

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connectivity so even in our better scenario when we ran it upstairs and did

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manage to have a successful race after the fact in fact you can see i'm still

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connected to that one here some of our racers who were just three or four

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meters away from me experienced some issues with their video feeds when their

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carts were just driving around me lying there on the

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floor so in conclusion when it works and works

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well it is a ton of fun but if you push it to its limits

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i wouldn't be surprised if you run into some problems the good news is most

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people probably won't do that because it's like two grand in equipment to run

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for racers just like it's

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months at freshbooks.com tech tips if you guys enjoyed this video

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maybe check out our diy first person car

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racing video that we did a while back it was way more work and not augmented

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reality but it kind of worked a lot better