WEBVTT

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well hello I have a robot it's in this box uh today I'm going to build a little

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tiny quadrupedal walking robot it's a Arduino based DIY kit takes about an

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hour and I'm gonna have a lot of fun doing this let's see what's in the box

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okay we've got some baggage

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first bag we have these are all of our

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servos these are Tower Pro mg90s so

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these are metal gear servos pretty nice there should be eight in this kit and we

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have another bag this is our Electronics kit we have a

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remote so this is IR controlled there's you can hack in an app and do it from

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your phone but you'd have to add a Bluetooth module to this kit what else

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we got in here we got an Arduino we have a custom PCB let's let's go ahead and

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actually get in here okay so we have a four cell battery Bank

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our Arduino which is conveniently already mounted in our PCB every pin on

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this Arduino is broken out which is quite nice and over here we have nine

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Servo pins so we only need eight but you have one extra one if you want to add uh

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you know an end effector or some neat little tool robot the beauty of this

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being an open source kit is that the whole thing is hackable all the files

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are available online and you can do whatever you want with it you can make

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it your own this is a ultrasonic distance sensor so we can program the

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Arduino to you know sense walls whatever you want it to do and we've got our

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remote and here's the IR sensor hiding in the bag we're just going to leave

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that all bagged up for now because we'll we'll need it later we have all of our

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laser cut Parts slow down turbo remove masking tape from parts that takes time

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we'll do that anyway oh yeah a little bit of hardware oh look at the tiny little wrench oh

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it's so cute so while there is a manual it's a little small for me so uh in

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advance of this I made a big manual so let's uh let's

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take our first look inside we have a little a little friend to help us along

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the way let's get our wood out here and

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start building

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so these are laser cut parts and why they mask it like this I think I brought

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a tool so you can see all the smoke that comes through when you you blast with

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the laser and it it can make the edges of your parts not look so nice they use

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a big industrial roll of masking tape that's rather expensive in my experience

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but totally worth it if you do a lot of laser cutting like I do so all these

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parts are MDF oh geez this is going to take forever I

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might just skip this part I think we'll do a little montage and

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I'm gonna pop out all these parts and prep all the pieces and then we'll get

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to assembly before I do that let me tell you about

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foreign

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need to find myself more of these kits so I can build them myself like we have

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a laser here I have my laser MDF is cheap and all these parts are really

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cheap I always found the problem with kits like this is you build it once and

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then you're like oh this is neat I'll use it for you know a week and be really

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really happy with it and then it ends up on a shelf and sits around but uh with

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the Advent of arduinos and all these reprogrammable little little computers

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if you stop loving it you just tear it apart use the parts for other things

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like these 9g servos they're ubiquitous you can use them in anything

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so there are multiple different types of head so to speak so petal is in Walking

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we are bipedal this is a quadruped so it

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has four legs there are hexapods and octopods and it keeps going up and up

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and up so this one has two degrees of freedom per leg we have a rotate right

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here around this axis and then we have a lift axis that's actually going to be in

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the ARM you'll see us build that a little bit later so we're a little limited compared to

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some but it's enough to jog around or you know if you're just trying to build

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a little kit for a kid you know you want to have a fun little hobby to sit down

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for an afternoon and teach a kiddo how to you know follow instructions I mean

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it's the first step and then you can get to modifying it make it your own have

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fun that's my favorite part

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foreign

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project is actually off of a place called Tindy it's like Etsy for nerds

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highly suggest it we'll have it linked down on the doobly-doo

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uh the meepad was designed by Scott Pierce and he's a maker based in Idaho

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who was making kits for something called the me ARM it's a very similar to this

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like three degrees of freedom robotic ARM and as he was making a little money

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selling these open source kits as as he was allowed to he decided he wanted to

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get back and he made this lovely kit for all of us I looked back through the

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history of him developing this kid and it had long gangly arms and a couple

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different versions but uh here we are

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with the little kit that you can get for under 100 bucks it's hard to say no to

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building a robotics project for under 100 bucks like the amount of fun you'll

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get out of this is definitely worth it in my opinion but we'll see we still

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have to build so with all these parts cut we're ready to uh to start

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assembling foreign

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servos moving on what do we got next

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I do believe that is leg assembly repeat this step one nine four times

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and it takes more than an hour to make this thing yeah well it's what you get

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for trusting the internet

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Okay so we've got uh these four panels

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made we're going to now make the leg

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assembly

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cells don't tighten these which I don't believe you want your servos to be rigid

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so I'm going to keep doing that and if the preservo fails that's my fault

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moving on

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no no no no no

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no no

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Pliers are now magnetized so anytime I

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try to release this nut into the slot it needs to go in it just comes back out purely The

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Darkest Timeline

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oh hell oh that was a bear

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I've got four legs they're getting there

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what a slug moving on these guys

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got a random blank page in the manual for some reason body assembly there are

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those pieces I didn't know what they were for oh look that same Fastener I

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hate so much

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last Nylock okay the number of Fasteners

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fits it's a good sign

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so definitely still needs to Pivot nicer than that

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we're getting real close Andy I can feel it

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I'm getting excited I'm starting to actually see it move too

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which is kind of cool

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little spider's almost there buddy I'm at the point where I'm skipping

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Fasteners that I've struggled with on the other parts of this build because

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not only do I think I can get away with it but also I just don't have the time

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okay we've got the battery on and second to

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last page we're putting in the ultrasonic sensor

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which goes here and then we are ready to power on

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these plugs are definitely like bigger than the pitch so they're starting to

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Fan in and our final Port is eight now

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there's one S9 on here so if you want to add one thing down the line you can

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after your me pad is fully assembled and all the servo Mars are plugged in a

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bunch of blah blah plug-in batteries uh okay I have those conveniently in my

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pocket I'm gonna plug in our batteries now it lets out the Magic Smoke

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I did a bad job if it works did a great job

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it's not good not seeing any lighting up

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hmm oh there's a power switch ah

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all right all right

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oh

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it's definitely doing something

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let's see here uh walk turn walk to his

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wave to receiving me

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but it's not doing anything the servos are moving

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I was thinking about it

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there we go okay let's try this again so uh up walk

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forward nope down left right

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you know what I might have done the joints a little tight that's the only thing I can think of

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the I think it might be low voltage that

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might be my problem okay start with

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fresh batteries it's always rule one which I did not follow

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good boys fresh boys oh they're still warm

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very fresh

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well that's slightly disappointing if you have no load on it it works just

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fine I tried real hard

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as far as the build goes pretty straightforward

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but uh I wish it works better right out of the box it's trying so hard I'll mess

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around with it a little bit later nonetheless

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oh we got a wave a little tinkering I

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think it'd be just fine all in all uh thanks for watching guys subscribe to

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ShortCircuit and uh see you in the next one