AT-AT

Hello all,

This is my first robot with programming so I would be glad, if you gave me some tips if you find any issues in the code.

My robot is based on an AT-AT from STAR WARS (https://www.youtube.com/watch?v=7FSggapwUC4 at 4:28) but it isn't very much looking like one (now).

This robot is not very professional and just made from scratch and old wood that was laying in our cellar to keep the cost down.

I used an arduino clone from SainSmart an prototype board an MCP23017 i2c port expander for a 4x4 keyboard wich I got from an old printer I modified it so I can use it for my project.From that printer I got a lcd too, unfortunatly without a backlight LED.Moreover there is an old CD drive wich I use for a boarding bridge.An old joystick is used for the controls (I had to modifi that too) and 8 servos for the legs 2 for the head (not build yet).

The original AT-AT walks to unstable so I decided to use the walk of a horse.I got the simple walk structure ready but still need to do the fine tune.The AT-AT can knee, it can walk, it can move out the bridge (I removed the bridge for now to keep the weight down), it can turn, it shows the temperature and later it should be able to scan the environment with an ultrasonic range sensor and maybe I add some speaker.

The dimensions are: 60cm x 60cm x 17cm.The weight I don't know.

If I forgot to say something you want to know please ask.

So now some pictures :

 

this is the hacked joystick 

the arduino and the mcp23017

the adafruit servo controller board

the lcd

the hacked 4x4 keypad

the CD drive used as a boarding bridge

and one leg from the side

 

 


This is a companion discussion topic for the original entry at https://community.robotshop.com/robots/show/at-at

Welcome to LMR

Hey and welcome to LMR, congratulations on your first robot build, we look forward to seeing more from you!

Ok, all the pictures are

Ok, all the pictures are gone sorry need to fix that.

EDIT: All pictures are fixed now :).

Which servos are you

Which servos are you using?

I’d guess they have to be pretty strong.

Thanks!

More things will follow soon!

 

Looks like a cool project!

Looks like a cool project! I’d be happy to help you out with any coding issues but then you’ll have to post the code first :slight_smile:

Hi

I am using Towardpro MG996R digital high torque servos got them for 20 bucks for 4 servos on ebay.They got 15kg/cm and they’re metal gear and I think with ball bearing too.

Thanks!

Thanks, the code is attached as an editor file.I am happy that you want to read it thanks again.

It is great to hear some progress be made.

Dear: Opidopi

Hey I remember chating with you in the shoutbox. Nice robot and I can’t wait to see some more progress. Just to let you know any ideas for special effects I sugest you look at a forum I started or ask me. Thank you.

From: Noah

If it walks, its a success!
If it walks, its a success! I look forward to seeing this as it developes.

Sometimes movies choose very unrealistic gaits for their robots, even if it looks good. Actually, that’s usually all the movies care about. :frowning:

This looks just the size to use Lego minifigs for the drivers and Storm Troopers.

Nice Work

Nice work.  I can’t wait to see more video and find out more on how you do the walking.

woah!!

Then you must add a plastic dart shooting turret:D

Welcome to LMR.That looks

Welcome to LMR.

That looks like a cool project. I am a Star Wars fan and would like to see your AT-At walking.

As for the professionality, well, LMR is a hobby robot community and that’s what counts. Using otherwise trashed components is very common and useful…we may call it even “Green Robot” since it’s using recycled components :slight_smile:

I am looking forward to the walking style and the finished robot.

Yes thougt about this it’s

Yes thougt about this it’s red like laser’s.And there are some robot projects with that on LMR.

 

 

Thanks!

The wood is from a box in wich were some thousand euros in 5 cent’s.I don’t know form where we’ve got that.

Anyway I am looking forward to see it walking too, I hope I can show you soon.

Thanks!

It walks like a horse walks.First the front left leg then the rear right, the front right and at least the rear left and so on.So while one leg is going backwards for the next step all others must move forward so the backward move takes 3 times the time of the forward move.But the distance to the floor varies every time and that’s my problem now.

thanks

Yes sometimes it look’s just cool but isn’t working in real.Anyway, Yeah LEGO figures are 4,2cm long, in real that would be approx. 1,80m and my AT-AT is 60cm high in “real” 20m.So, in my AT-AT 1m real are 3cm but the LEGO fig. is just 2,3 cm.

Here some pics with a LEGO king I found in my room:

BILD0802.jpg

BILD0801.jpg

So as you can see a huge difference nevertheless a nice idea.But maybe I can build a small robot that fits in there ...

thanks

First I will try to get it walk then I look for any special effects because if I got it looking cool but then it doesn’t walk it is all wasted. But thanks for your help!

Okay well I am glad I mostly helped.

Okay well I am glad I mostly helped good luck with the robot though.

Yes,but they still look neat
Yes,but they still look neat if your not paying close attention. I have a bunch of the oddball figs they sell in random packages. I have a couple of deep ones, a disco skater/singer, some evil cultist dudes and orcs (they might fight right in giving it a Warhammer look). I only have one storm trooper. I want some mimes,

I may work on printing some of my own. :slight_smile: