in previous years at ltx jake's contribution to the like incredible
experiences that we've created have been playing racing games on the 16k and 10k
ultrawide gaming setups and frankly they were smash hits good job jake
but this year for our racing experience we're not content to settle for
bezels or even virtual cars
this is next level my friends what if instead of a video game car on a screen
we could drive actual cars
in vr i mean yeah okay they're they're rc cars
but like come on close enough right sick
right that sounds pretty cool
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let's break this down so first
we've got to figure out how to control our steering servo here
with a steering wheel as well as figuring out how to control
our esc or electronic speed controller with a throttle and a brake pedal
and then there's the video stuff like how do we even mount it what are we gonna use like there's a lot of
questions here yeah uh furthermore getting that video
feed to the headset is another issue so we need something that's high quality
enough that you can really see where you're going through it and also low
latency enough that you don't just want to immediately throw up we're probably
getting ahead of ourselves a little bit though because before we can do any of
that stuff we need to settle on a platform or a car there's a lot of
options out there obviously but we need something that's not crazy expensive
because you know you're kind of cheap we need something that's going to be reliable with good battery life because
this is going to be seven plus hours for two days and it needs to be not too big
or too fast because both of those things are going to contribute to motion sickness yeah if you're like ripping
around like like go that fast like four inches
from the ground we want to keep our vomit quota for ltx pretty low you're
gonna be done now of course it also still needs to be big enough to house
all the first person view hardware and i mean ideally be fun to play with when
we're just done this project right yeah
there we go so turns out there was a bit of a
miscommunication um jake and i define
large a little bit differently so for better
or for worse we ended up with a traxxas slash
two-wheel drive which would be perfect for this project if it was
oh i don't know about 30 percent smaller and
maybe okay okay okay maybe about a fifth of the speed
it's fun though yeah that's fine we can roll with this all
right all right all right well one thing i didn't show you is it
has training mode which cuts the throttle in half you know jake's not so
bad eh we're on the same wavelength here
all right it's it's still pretty quick okay still probably a little faster than we
wanted sorry david getting our steering working with a usb steering wheel was
the first real challenge now we knew thanks to fellow youtuber rc sparks that
there was a steering wheel that would work really well for this setup thanks
to its simple design the thrustmaster ferrari racing wheel and thankfully
thrustmaster was able to supply us with several of them to tinker with and it
looks like with some minor modifications we should be in pretty good shape so
with the rc transmitter and the steering wheel opened up this actually
looks relatively straightforward
hopefully knock on wood so the transmitter just has a potentiometer so
you can see the one behind the steering wheel right here and then it's got a
second one for the throttle so that's pretty cool so if the resistance is the
same between this and there we go the potentiometer here and
well the other one would be in the pedals we'll deal with that later we should be able to just
move the wires over and
yeah they're different so
we're dealing with 10 kilo ohm potentiometers
in the steering wheel and then just five
five five kilo ohms yeah sorry yeah five kilo
ohm for the transmitter okay so
hopefully then what we can do is find some five kilo ohm pots that are a
similar size to what's already in the
steering wheel because we'd rather not have to make adapters or something just
to mount the pot so we can turn the stem on it when we turn the wheel after a
quick trip to the local electronics store jake returned with something
reminiscent of what we previously had although we could tell some minor
modifications were going to be necessary for the pedals we weren't able to
locally source flat sided potentiometers in the resistance that we needed so
while you could probably just drill out the hole in these little gears we
decided to instead 3d print some replacements
as for the steering wheel the potentiometer was really close to
fitting but some cutting and sanding was required to get it nice and snug in
there we went with a super professional hot glue mount for now but by the time
we roll this out at ltx it'll probably be upgraded to jb weld
for wiring we followed along as closely as we could with rc sparx's guide and it
turned out pretty well although we did have to swap our pedals from left to
right as they were reversed okay so
theoretically if you fire that up
turn the chairmail no way
okay well that's the easy one okay
oh i saw it you saw it which is definitely trying we should try the
calibration thing whoa whoa okay you're gonna break it so what we're trying to
do right now is calibrate the pedals because theoretically you can
set up what i guess it would be the receiver yeah the speed control you
ready yeah okay ready uh did you already press it no no sorry
well it's moving at least so we got the throttle is it enough to get it to go
oh not very fast
this might be better though ah it's a little slow
she'll be coming round the mountain when
she comes yeehaw
i feel like we have less throw than we did in the controller because these
because you've got geometry trigger so the ones in the controller are 180
degrees right so you have yeah blah blah blah and then these ones are like 270.
yeah so what if we cut this just cut the stoppers out so while jake
chops up the pedal assembly it's time to talk about the first person view video
setup now we browsed a ton of different tutorials and forums for information
about what the best individual components were for a setup like that
and the conclusion is that it's kind of like building a pc except rather than
what cpu gpu and ram you should buy it's
which video transmitter receiver camera antennas headset and batteries
and there's a lot less community consensus on the benefits of certain
parts over others so at this point it felt like throwing
the company credit card at an rc shop and validating a bunch of different
stuff ourselves might have been our only choice
that is until we found out that dji makes a pretty much plug and play
first-person view camera called ocusync which when paired with their racing
goggles supposedly provides a super low latency and high quality video feed you
know i gotta say as much as i was genuinely looking forward to cobbling
something together and tinkering with it uh given that we're gonna be running
this at a live event with thousands of attendees i'm actually
pretty happy that we found a pre-made solution
one point dji failed to mention to us however
is that see this right here is the receiver and
camera module it actually needs active cooling
otherwise it can overheat i mean i guess that makes sense given
that this thing is designed to be used on open air or like racing drones
but anyway it's fine because we can just simulate that airflow with a little five
volt knock to a fan a 3d printed bracket and then some of these old enzo tech uh
heat sinks okay so now that jake is pretty much done with the hack job
behind me i guess it's time for me to try and find some
places through the grill well look it's not i know it's not going to be perfect
today it's i think about it what we're going to have to do is cut some holes in this
top but so we don't need it for ltx we're just going to temporarily mount it
yes because for ltx we want it to be very pretty and pretty is not our specialty
and like think about it it's not like when you sit in your car you don't have
your dash in front of the windshield like we'll be able to see well enough
look it's not it's gonna be like right in front like i know look if i could put
it up a little bit with the windshield right here right this is like a supercar
or something sure oh hot glue oof
i'm just putting a little bit okay oh it has a bracket you know
well now it's hot glued hopefully right side up too oh you can
flip it all right there we go this is quick that's on there
oh please don't hot glue that well just a little oh no just a dab okay i forgive
you for choosing this car that's expensive because it's actually working
pretty darn well yeah easy for you to say did you pay for
it no but neither did you yes i did well
linus media group incorporated who's that
okay so now the battery we need the battery yep i'm not going to hot glue
that this is a lithium polymer battery i would strongly recommend not hot gluing
one of these anywhere you gotta rip it off just tears the cell
in half so it's a massive fire yeah yeah
spicy hey hey nice all right so the
cooling fan is going is it super wide angle
yeah actually holy crap i can see david right now really from where you are
all right 720p right now so this is i think the highest
quality setting it looks pretty good like the lowest latency setting you mean or no it's the highest quality one oh
really so the highest latency oh okay how's your nausea
um i mean the fact that you're moving isn't helping but uh do you want to put it on the
ground i want to try it no i think i think i get to try the spoils of my
labor where are the petals
this is going to be kind of interesting watch me fall over
okay is the hot soldering iron hot no okay i
feel like i'm driving a jeep like
oh man no way
whoa oh my gosh dude the latency is so low
uh so we think it's possible that we can insert an sd card right here in the
occusync and record straight to this so you guys
will see the full quality
isn't it sick hey jake what's up
dude this is so awesome whoa
so cool the graphics the graphics man
it's irl
man i could get like way better at this with some practice
all right all right all right we can wrap this video i can go i can go do mine show okay so
there's definitely still some progress for us to make before we can deploy this
at ltx but like wow this is genuinely
really awesome i know that this one was a little bit sparse on the details but
the truth is that this was just proof of concept we've still got some things to
iron out so the next video is going to be the
detailed guide for how you guys could do this with similar gear at home
trying out the track and then of course we're going to be teasing the full
experience that you'll be able to have at ltx 2019.
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