"How To Build A Geared Up/Down LEGO Mindstorms EV3 Robot"
Summary
TLDRIn this video, Mr. Hino from 'Mr. Hino's LEGO Robotics' demonstrates how to build a geared-up or geared-down LEGO robot. He walks through the process step-by-step, explaining the parts needed and the assembly instructions, including large motors, connectors, beams, and gears. Throughout the video, he provides tips for proper assembly, ensuring stability and correct gear alignment for desired speed or torque. Mr. Hino also showcases the difference in performance between a geared-up and geared-down robot and offers practical advice for modifying the build for different speeds and strengths. Despite some interruptions, he maintains a clear, engaging instructional style.
Takeaways
- 😀 The video is a tutorial on building a Lego robotics project that can either gear down or gear up.
- 🔧 The project requires two large motors, a ladder frame, and four red connectors to start.
- 🏗️ The construction process involves assembling a frame and adding connectors in a specific order for stability.
- 🔩 Additional components like an 11-beam, black connectors, and a gray frame are used to reinforce the structure.
- 🔄 The tutorial demonstrates how to correctly position J beams to gear up the robot by aligning them with the motors.
- 🔩 The use of gears is crucial; smaller gray gears interlock with larger ones to transfer motion.
- 🚗 The robot's speed and torque can be adjusted by gearing up (faster speed but less torque) or gearing down (slower speed but more torque).
- 🔧 The presenter makes a mistake with the J beam placement but corrects it, showing the importance of attention to detail.
- 🔌 Cable management is addressed, with a tip on how to route cables under the robot for neatness and functionality.
- 🎥 The video ends with a test drive of the geared-up robot, showcasing its speed and the effectiveness of the build.
Q & A
What is the purpose of the video?
-The video aims to teach viewers how to build and gear up or gear down a LEGO robot, step-by-step, using specific pieces.
What are the first pieces needed to start building the robot?
-The first pieces needed are two large motors, a ladder frame, and four red connectors.
Why does the presenter describe part of the assembly process as 'unorthodox'?
-The assembly is described as 'unorthodox' because the presenter is positioning the parts in a way that is unconventional but improves the fit for the build.
What is the purpose of the 11 beam in the robot build?
-The 11 beam is used to add stability to the robot by connecting it with black connectors.
Why does the presenter leave two spaces blank when attaching the J beams?
-The two spaces are left blank to allow the J beams to fit directly into the motor, which is necessary for the gear system to function properly.
How does the presenter correct a mistake in the build?
-The presenter realizes that a part was placed on the wrong side and corrects it by moving the part to the correct position, highlighting the importance of checking the orientation of pieces.
What is the main function of the gear system in this robot?
-The gear system is used to either gear up or gear down the robot, which affects its speed and torque.
What happens when the robot is geared up?
-When the robot is geared up, it moves faster but with less torque, making it less powerful but quicker.
How does gearing down affect the robot's performance?
-Gearing down makes the robot move slower but increases its pulling power and torque, making it more powerful for heavy tasks.
What adjustments are necessary when connecting the gears and tires?
-The presenter adjusts the gear and tire alignment to ensure the gears interlock correctly and the tires are properly positioned, using bushings to prevent parts from coming loose.
Outlines
🤖 Introduction to the Gear Up/Down Robot Project
The video host, Mr. Hino, from 'Lego Robotics,' introduces the project of building a gear up or gear down robot. He briefly explains the goal: to walk viewers through the step-by-step process of constructing the robot, detailing the pieces needed and how they fit together. The process will be slow to ensure clarity for all viewers. The first step involves gathering two large motors, a ladder frame, and four red connectors. The initial assembly is described as somewhat tricky, requiring patience due to small components.
🛠️ Preparing the J Beams for Gearing Up
Mr. Hino discusses setting up the J beams necessary for gearing up the robot. The beams are positioned strategically to interact with the motors. He encounters minor setbacks, such as placing components on the wrong side, but quickly corrects them. Once the J beams are properly aligned, Mr. Hino expresses surprise at how quickly the assembly is progressing. He then starts attaching the gear system, noting that the larger gears will give the robot its speed. Some light humor is included, mentioning external distractions like lawnmowers.
⚙️ Installing and Adjusting the Gear Mechanism
Mr. Hino focuses on the more technical aspect of the project: ensuring the gears interlock correctly. He carefully adjusts the gray and white gears so that they mesh perfectly. The proper alignment is crucial for the robot's movement. After some fine-tuning and adding bushings for stability, Mr. Hino shares tips on getting the tires into the right position. He acknowledges that viewers may need to experiment with the gears but emphasizes the importance of ensuring everything stays securely in place.
🚀 Final Adjustments and Test Drive
The final steps involve attaching the remaining parts, including black connectors and adjusting the cables to avoid tangling. Mr. Hino shares a tip on managing the cables to keep them tidy. After completing the assembly, he backs up the camera to show the finished robot. A test drive demonstrates the robot's speed, with a surprise about how quickly it moves due to the gear up configuration. Mr. Hino jokes about confusing the gear up and gear down terms but clarifies that gear down would provide more torque and pulling power, while gear up prioritizes speed.
Mindmap
Keywords
💡Gear up
💡Gear down
💡Motor
💡Red connectors
💡J-beam
💡Bushing
💡Gray frame
💡Stability
💡Caster
💡Torque
Highlights
Introduction to the video about building a gear-down or gear-up robot.
Step-by-step guidance on assembling a robot using large motors and red connectors.
Explanation on why the assembly process might seem unorthodox for a better fit.
Detailed instructions on connecting parts such as the 11-beam and black connectors for stability.
Guide to inserting the gray frame between the large motors and adding more connectors for structure.
Introduction of the J-beam for gearing up the robot and proper placement within the motor.
Mistake correction with the J-beam assembly, encouraging viewers to adjust as necessary.
Preparation of the gears for assembly and the importance of interlocking them correctly.
Detailed guidance on assembling and adjusting gears, including the gray and white gears.
Instructions on adjusting the tire and gears for proper alignment and fit.
Explanation of the function of gears and how gearing up increases speed while gearing down increases torque.
Overview of the robot assembly with an emphasis on stability and alignment.
Tips for managing and organizing cables to prevent tangling during the assembly process.
Final assembly check, ensuring all pieces, including tires and bushings, are in place.
Testing the geared-up robot, demonstrating how fast it moves and the effect of gearing on speed and torque.
Transcripts
[Music]
hey everybody what's going on it's mr.
he knoweth miss dinos Lego robotics
today's video is gonna be how to show
you how to make this a gear down or you
can gear up robot check out this picture
of it so what I'm gonna do is I'm gonna
take you through the process and I'll
show you what pieces you would need and
take you step-by-step on how to get this
thing built so I'm gonna go slow make
sure you guys can see everything and
then we'll get this guy built and then
I'll show you how to demonstrate you
know how it works okay so let's get to
it okay everybody let's get started the
first thing you're gonna need are your
two large motors this ladder frame and
you're gonna need four of your red
connectors there we go so here we go
we're gonna put this and it's gonna be a
little unorthodox but just follow me on
this one okay alright so this is gonna
be the weird part I'm doing this because
it makes a better fit for everything
sorry about mr. lawnmower guy alright so
here's what we're gonna do we're gonna
put this each frame like this and we're
gonna put these red connectors right in
here like so
guess I better just do one side first so
like that
and then I'm going to put this other
side right here
and I'll just put these in this is kind
of the hard part you've got to have
these tiny fingers which I don't have
there we go like that and one more like
sorry about my big hole hand on the way
guys there we go okay so we're gonna
want it like that okay like so alright
now here's what we'll do
and it doesn't really matter the order
here but I have an 11 beam and I have my
black connectors put in like so and I'm
just going to put them in just to give
this guy a little bit more stability
like that
okay then what I'm gonna do is I'm going
to have this gray frame and I'm only
gonna put black connectors right there
and what I'm gonna do now is put this in
between these two large motors I'll take
some okay now we have that okay now
we're going to be putting this piece
right here we're going to be placing it
right in here so we have this cross
piece here we'll put that one in like
that and then we're going to put
put that in like that
and this guy is gonna sit right there
okay and then we'll flip it around and
I'll do it to the same same thing to the
other side
[Music]
and we have another one of these pieces
here
and they're both the same on both sides
okay so now what we're gonna do is we're
gonna get our these J beams ready for us
to gear down or gear up so I'm gonna
actually be making this to gear up so
here's what we'll do we want this J beam
to be like right there in order for it
to go right into this motor here so
that's why we left this these two blank
here so I have my J beam I don't know
why I have this blue connector in here
ready but I'm gonna go here to the very
top you know put that guy in there and
then this guy will actually flip around
like that like that and then we will put
this right inside here so if you look
now this will be able to go right inside
that motor and that's gonna be key now
let me go ahead and do this to the other
side the other J beam
seems like they're always cutting the
grass when I make these videos funny huh
okay so oh man I did that wrong why
didn't you guys tell me okay so I'm
gonna put this here
there wow I'm doing all kinds of crazy
stuff putting it on the wrong side don't
you hate it when you guys put something
on the wrong side it's very frustrating
anyway okay so now this is gonna go on
the other side right here like that so
now that we'll be able to go right
through that motor Wow I'm pretty
shocked how fast this actually is going
okay so here's what we're gonna do to
get this gear going on this should be a
six and we're gonna put this guy right
through there that was our Bell and we
want it to just kind of look like that
same thing on the other side
like so okay now here's how this is
going to look for our gear now this is
what the tire will actually look like so
we're gonna need this is a bigger one
now this is a ten and what we're gonna
do is well you know that let's actually
get the gear on here
sorry about that at a momentary peace
loss so and maybe maybe memory loss okay
so what we're gonna do is we're gonna
get the big gear
[Music]
so what's gonna happen here is this is
actually gonna go through like this and
we got to get that gear on so I'm gonna
put this gray gear here like so I'm
gonna get this gray bushing put on the
other side just so things don't come off
alright so let me tell you what I have
on here now is believe this is an 8
sorry guys I should know this thing's
but what I have is I have the small gray
gear this is gonna be the one that
interlocks here and then I just have
that white tooth so you're gonna have to
do some playing around with this but so
right now they're interlocked and I'm
gonna push this tire just a little bit
further in here but I really want to
make sure is that this gear interlocks
that with that gray gear let me turn
this here and that's when it's gonna
have to take take this gear and slide
that in there and then adjust your tire
so that everything is just not hanging
out there alright so that grey gear if
you can see is connected to that the
white gear and when everything's perfect
that's when you'll put on this great
bushing here in the inside
and I'm just doing a lot of adjusting
cuz there we go okay so great gear their
tire here like that and then I'm going
to go ahead and do the same thing to the
other side so here we go so this another
great gear will go here
sorry I wish I was faster kind of
annoying okay
[Music]
sorry guys I think my video cut out but
I'm back and then I have the the same
nine hole with the large blue and small
blue connector this blue one's gonna go
right into there this one's gonna come
up here
voila and then I have my whoops lose
another black connector I'm gonna need
this ball and caster the two black
connectors and here's the reason why I
had to kind of offset it in the very
very beginning is so now that this can
go right there if not it would have been
a little off-center
okay right there
all right all I have to do is get my
cables in here and I'll show you how
this guy works let me show you a little
trick I learned with the cables man that
a lot more is allowed what I do is I
will actually undo this right here so my
cable can go underneath it if not kind
of things are kind of just going
everywhere and I'll do the same thing to
the other side I'll undo here so this
cable can go underneath it there we go
feels good to have your cables all taken
care of
they're not flying everywhere
okay
[Music]
alright guys there we go you back this
up oh yeah I didn't put this tire on or
did it just fall off
oh that's right I didn't have my great
bushing on there oh hey nice I just
found one I love it when you can just
find a piece real quick ok so there we
go let me back this shot up yeah so
there is our geared down I got to put
another bushing there ok but here's our
slightly geared up robot here let's go
ahead and give this guy a test drive
okay so here's my geared up robot here I
got this on for 10 seconds I think pages
oh that's right I just remembered that
everything's backwards cuz when you gear
up like that it changes the direction of
your gears so whoa that guy took off
well I went fast
and that was so fast you probably anyone
see it let's try that again come over
here all right here we go whoo fast that
guy took off all right guys so there is
my queued up robot sorry gear down robot
no no I'm getting myself confused now
this is definitely geared up where this
guy's gonna go super fast if we wanted
to gear down then that would give us a
lots of torque and it would go a lot
slower but it would be able to it would
be able to pull a lot who have a lot
more you know pulling power all right
guys so there is your geared up robot
and you know if you wanted to gear down
you would just take these gears and
reverse it which means the smaller grey
gear would be inside the motor and the
larger gear would be outside here so you
can just flip that around if you wanted
to alright guys hopefully you were able
to follow those instructions sorry again
for the lawnmower guy and if I were
losing pieces or my mind but there's
that rope up there all right guys I'm
mr. Hino from snails Lego robotics I am
out
you
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