NXT Ballbot : Self-Balancing Robot On A Ball

[svenfeenstrakuiper]

you're the best :D

[flossflink]

You've just created Rosie the Robot from the Jetsons!

[0915Steve]

totally took segway to the next level, well done!

[GroupDenmark]

impressing´ to say the least...!!

[sabre68]

Amazing! Nicely done.

[h7iws]

Amazing project. Considdered adding a compas-sensor aswell, so it would keep it's orientation?

Nice project though :)

[manrayer88]

You could make it move around easily

[Will0285]

Its now a ball?!? Its ya brain man xD

[NUMBER1MUSTANGMAN]

awesome bot would love tobuild it

[jnwpse]

How exactly did you get the remote control mapped to the NXT?

[doemaeries]

this is the stupist thing ive ever seen. but its cool

[villy8778]

UAU

lol

that is amazing...

[AlainHubert]

The load test was impressive!

[actionjaxon313]

Do you remember what the loop time was on this?

[DeadForestWalk]

Reminds me of the big dog. Pretty cool

[TheOmeganator]

nice!

[DemonCRC]

how do you obtain the parameters like moment of inercia? Did you use a software like Solid Edge? Thanks!!

[madmonky32]

it would be more smooth and fluent with its movement on a bigger ball. but great build and exelent programing

[Jazza159]

Awesome

[Dawgtech1]

When you were programming this did you have to design a compesator or something to that existent to achieve the right response or does the nxt plug-in for matlab have something build in to it?

[ElevenDancingRhino]

use an omni-directional wheel to avoid the jerkyness

[bastaboj]

hey man very good job!!! i have one question for u, i am building the same robot but i was thinking why use 2 gyro sensors, when u can maybe use one acceleration sensor, becouse its measureing tilt in 3 axis. so please tell me what do you think plz!

[SingularlyDatarific]

@bastaboj

He uses gyro sensors, because an accelerometer will not tell which way is down, it tells which way it is being accelerated. If it sits still, it will figure it is being accelerated 1 g away from the ground, which is fine, but if you have an active robot, it will sense the correction movements as a change in acceleration, resulting in a robot falling over a lot. The gyroscope only tells which way is up (although I wish they made a 2 axis model, myself), and can't be confused by itself.

[idioticrandomguy]

lol, a mobile trash-can!

[idioticrandomguy]

Cool! Can you make it ride my unicycle?

[madnesscombat5]

lol it was so funny at the end when it fell

[trandinhcat]

after watching this, i don't want to go to circus anymore

[sholtob]

what programing language did you use?

[josephbrancatisano]

@daybreak20

ur a dickhead

u have to program it youself

some programs have tutorials

but usually

YOU MAKE UP WHAT U WANT

fucking wanker

u have probably never used one or seen one in your life

so think b4 u speak

[SparksLoog]

Ummm.....

You are not limited to the models in the box.

You can engineer your own bots. ^-^

[daybreak20]

this isnt engineering. NXT is sucs. Everything is ready to push the power on button. Yo don't do anything.

[pedrofile91]

@daybreak20 amm it is software engineering he had to write the code for it to balance you cant make that with the NXT software that comes with the lego

[topitapi]

You dont do anything but post stupid comments on pretty cool things.

[omudan]

@daybreak20 O rly? So how does this work then?

[TheYoGamer]

@omudan Lozer xD

[rejackyouri]

cool

[Sentence25]

very nice job!!!!!!

[IllegalMavamaarten]

wow that's coooooooool !

[Hidjdjdj]

this is beast............... O:

[Mato0092]

Very nice work! I have "only" 1 gyroscope, and I am trying to make a segway style robot programmed in RobotC...I have downloaded a simple program that makes the bot balance but...I can't even modify it! :) Five stars for the video.

[nick1f]

Amazing job! How long did it take to complete?

[miko911m]

COOL!!!

[poncethegreat169]

if only my coordination was that precise, i'd love to balance on a ball

[Hidjdjdj]

lol. ull get it some time lol

[bobobano]

that is so damn sexy.

[Hidjdjdj]

i know right!? it made me wet! lol jk

[Ryuuken24]

Best part is when it trips :D

[flaviogfernandes]

Incrivel!!!!

[trupodur]

can you tell a couple of words about why did it fall in the end?

[rhysfawr4]

Nice work. Great idea.

[planmix]

Bravo !

[robojot]

favorit ? comment and 5 stars

[tomy1710]

what sensor does it uses and what does each one is used for?thanks for response

[yyamakun]

I use two Hitechnic gyro sensors. Please refer the document described in video information area.

[HalfBredNinja]

I think it you lowered the center of gravity, it would be a lot less likely to tip over, for one. And also, it wouldn't be nearly as squirrelly.

It is cool, though. No doubt.

[bubinasuit]

Well actually no, if you lowered the center of gravity it would be MORE likely to tip over. Newtons first law says an object in motion wants to stay in motion and vise versa. so having the center of gravity at the top, it would start falling much slower than a low center of gravity because the angle of a large circle decreases slower than a small circle. Thus making it easier for ball-bot to keep the ball under the center of gravity.

[HalfBredNinja]

So why (Example) does a van traveling at 45 MPH roll over when making a hard right turn? I'm not denying the law, but I'm saying that with a lower center of gravity, the chances of it falling completely over would be decrease. Hence why a sub-compact could make that turn no problem, but a van, or large SUV would roll.

See what I mean? I'm not being bitchy like most YouTubers. I see no problem with having a polite discussion. ^_^

[manojmv]

Try this experiment:-

Take a stick and a ball. Poke a hole in the ball and insert the stick through it where the ball is towards one end of the stick, something like this:- (end A) ==O========== (end B)

Now try to balance the stick on your finger with end A pointing down (low center of gravity). Now try to balance it on your finger with end B down (high center of gravity). Which one do you find it easy to balance ?

Please try this experiment and post your results here.

[HalfBredNinja]

I found it easier to balance with a lower center of gravity. Granted, the higher center of gravity stopped it from tipping completely over as fast. However. I tended to over-correct due to this, and lost it. With the shorter alloted area for correction, I did better. Which was my point. I saw a lot of over correcting in this robot. Which made it jerky, and incredibly squirrelly (IE: Hard to control). Lowering the center of gravity (And overall correction speed) would fix the issues.

[bubinasuit]

basicaly what we were getting at is that the high center of gravity would give the robot time to self ajust and keep the itself from tipping. But with a lower one it would have to be a hell of a lot faster and sensitive. but since its a robot it would be less likly to acidentally over correct itself (unless badly programed)

[atotoole21]

Possible future segways?

[cwitufu]

pretty cool but ya know you could probably make something cooler

[Mato0092]

Finally, someone did it. I hoped someone will make robot ballancing on a ball since i have seen Hitechnic Gyro sensor.

[jordan59961]

amazing!!!!!!!!!!!!!!!!!!!!!!!­!!!!!!!!!!!!!

[jordan59961]

SSSSSSSSSSSSSSSSSSSSSSSSSSSSSS­SSSSSSSSOOOOOOOOOOOOOOOOOOOOOO­OOOOOOOOOOOO  cooolll

[wuziq]

whaaaatt...

[NXTLiftBoy]

I am baffled by the really nice real-time performance, excellent job!

[ronaldmcrae]

Brilliant.

[MazzucaArtz]

that is soo cool

[raulrusboy]

Pretty cool, dude!

[Parax77]

great work!

[222Doc]

The best i have seen todate EVER.