Lego NXT solves a labyrinth

[munod]

boa noite amigo....qual programa voce usou ? e a programação?

[yeikiu]

skills

[resendebastos1]

@yeikiu

I need help to do my mindstorm

[VidsOfTheBest]

HOW in the world... Did you prograam that... It's obviously nnot by the prograamming softwrae incuded with the box!

[Preetham42]

i love how it shakes it's head at each corner ;D

[yeikiu]

what do u mean by "shake" the robot goes straight with the instruction to move both engines syncronized.

[nome3549]

how did u get the robot to not shake on the line my shakes

[yeikiu]

Of course it does, its always printing on the screen the current direction and the point its crossing. For example (3,2) or (1, 4).... the starting point is obviously (0,0).

[OnkelMickwald]

When it turns, does it store how much, and in which direction i turns in a variable too?

[invisible0tom]

aww the floor pattern is confusing it

[Sherbe95]

cool

[RGBfanatic]

wow. that is pretty darn great. I understand why it retraced some of its paths. thats really cool. you should try it out on a slightly larger maze, maybe one that has a longer distance from the slave to the finish. that one was a large(ish) maze, but the slave still started a bit too close to the finish for my liking. great bot. great tech. great mech. 78/100. -RGB-

[semple162]

ill pay £/$50 for one of those

[LuciusMare]

it is retarded.gone past the finish like three times :D anyway,cool and amazing

[kramerc2]

It went past the finish on purpose. It didnt want to use only the 1st way it found. It wanted to find all the solutions, then tell the other one which was the fastest.

[LuciusMare]

oh,cool :)

[bjborderjumper18]

your program is awesome. It probable very simple too, but thats what makes it great!

XD

XD

[MrJorghino]

please contact me!i ve wrote you a mesage !check your inbox!thanks

[vladalexandru85]

haloo nice robot

[rochelimit55555]

awesome!

[Zetioun]

Nice it looks like you have used parts from the cd rom to make it ?

its awesome that the next one knew the whole way and took the shortest way :P

[feign88]

that is one retarded robot o.O

[CoWolArc]

It's doing a complete map... Imagine if those were connected hallways, and you had to use a pen and paper to map out each one so you could fax the map to a friend. You would look pretty retarded too, to an overhead observer.

[mounsteres]

I hate NXT... an high tech Legos is stupid... it takes away the old ways of lego.. the fun ways

[Dshort33]

How? I'd say that NXT goes straight in line with the ways of lego; allowing people to create. It's a good robotics kit that offers enormous opportunity; and it's relatively cheap, to boot. I, personally, like NXT, and the fact that it's made by Lego is icing on the cake.

[drumatic86]

it would be cool when it could remember where he was before so he choose to try a new way..

[yeikiu]

that is what it does!

[alejandropec]

Awesome application

[ikhouvangroente]

2 NXT ! Wow!

[holyhell5050]

Good stuff dude.

[marcoscoller]

Please post the RBT. I was very pleased this project. I plan to do in Lejos (Java + Lego).

[noahmannberg]

nice!

[PapaSmurf6768]

i dont get it...

[dwilkinson7]

the first one is using an algorithm to traverse the maze and store the paths it takes to compute the best path from start to finish. it then sends this optimum path to the second nxt unit, which now knows how to get from start to finish the quickest

[nooloo3000]

wow

[marcoscoller]

can you post the program pls!!! pls or give the url were we can see it pls!!

[dariusfol]

Awesome!!! I am lloking forward to byuin LLego Mindstorms! What's the difference between Nxt and the other?

[Clektose]

Mindstorms is an older version of the NXT.

[mavamaarten]

yup! NXT owns Mindstorms !

[diaryboy]

isn't the old one called the RCX or something?

[utubeman0]

mavamaarten: ... other way around. lego owns Mindstorms which owns NXT and RCX

[MufinMcFlufin]

uhh...

I'm pretty sure that Mindstorms is like the company name

Similarly like Bionicle and whatever their newest version is

the RCX is an older version of the NXT

both are made by Mindstorms, although the RCX is now discontinued

[EXITUS01]

Was there a difference between the first and the second robot? Or was the first just a bit stupid?

[yeikiu]

the first start the way without any idea of the maze, when he find the solution, send the fastest way with the Bluetooth technology to the 2nd...thats why the 2ns seems to be more "intelligent". The 2nd is the stupid, bcos he cant do anything by himself!

[EXITUS01]

cool that means that the first one scans the whole labyrimth and search than the shortest way. very intersting and amazing.

[Witold83]

Yes, I see that whole effort made by master is necessary so the problem of loops could be desolved.

Congratulaton boys - You made good job :)

[sench07]

good job, congrulations ! did u use an optimization algorithm or graph nodes techniques ? i'm curious about that :) because in the end of the labyrinth mapping it goes straight to the finish, am i incorrect ?

[yeikiu]

optimization! The slave always knows the SHORTES way to the exit. Thx, its nice to see people congratulating us 4 the work! ;-)

[sench07]

never mind :) but finding the shortest path is sometimes a huge problem(in some cases) even if all the states are known. Try an alternative labyrinth to test that ;)

[lalala4456]

1/5 way to easy, all it uses is the light sensor.

[yeikiu]

r u sure? this nxt can avoid objects in the way with the ultrasounds sensor and... is using the bluetooth module to communicate with the 'slave robot'... only the light sensor?

[cl3rkenwell]

If it's "way to easy" I want to see YOU do this, blueetooth and logic and all! btw nice! 5/5!

[bionicghost]

boring... yet awesome!

[KaoShae]

Aw man, why can't I do stuff with Lego Mindstorms in University? That would be the best course ever.

[Coodude26]

Wait, let me get this straight, the first robot basically graphs out the labyrinth, sends it to robot #2, and robot #2 finds a way using some crazy maze algorithm thing? That had to be really hard to program.

[DoodleHero]

Correct.

[racerx007666]

whats the price of these robots?

[142Spartan]

From cheapest to most expensive, id say about, 20-100+

[keenfrenzy]

The Mindstorms NXT kit is $249.99 at most stores, which provides the parts to make one of these robots, however you are not limited to this specific robot. There are limitless possibilites.

[Dghost100]

sweet music at the end by the robots

[SPACEDMADNESS42]

groovy, five stars

[Sixta16]

This is amazing, but the solving algorythm should be better. :)

[yeikiu]

better? is an heuristic algorythm! the time it takes to solve it depends on the initial position! ;-)

[jsandlin71]

It must be hard for them...being trapped in that labyrinth...

[boonce88]

Haha yes it MUST!

But great robot(s)!

[kartaloktay]

nice!!!

[gravossupream]

nice job :O

[yeikiu]

hi can't smell where the exit is... just follow the algorithm!!!

[PocketProtector123]

I mean exit!

[PocketProtector123]

he past the entrance twice!

[howla012]

yeah, I agree that he did a hardwork, but not really smart.

[chaotictails]

same here, but still amazing.

[pabm122]

can you post the program pls!!! pls or give the url were we can see it pls!!

[desiredusername]

Pretty awesome that it transmits the path, but it seems like the master could be a little smarter in the first place.

[minifig04]

Very well programmed!

[kebakent]

You should really try making a giant labyrinth, so that it is easier to see their behaviour, and if the route really is the fastest found.

It is a really good idea. Well done =)

[cheeseycom]

A bit like robotic ants, if you think about it..

The ones that go first make mistakes and find the best route (even at the expense of their own lives), and the ones that come after follow the route discovered by the explorers.. (except instead of bluetooth they leave a chemical trail =] ).

[disneylandfreak92]

wow you have two!

[RAWRIAMSPOON]

umm, which is the master and which is the slave, this looks freaking awesome but yeah, we kinda need clarification :P

[yeikiu]

Obyously, the first one is the master, who finds the exit after a lot of tries and the next one is the slave, who receives the easiest way and don't need to look because he knows where the exit is. The only restriction is that the point 0,0 (the first one) must be the same for them two. Sorry for my bad english.

[lucavascon]

Great thing!!! NExt step would be having both exploring the labyrinth starting from same point, and sharing info menwhile... I'd like to know how less is the time to solve it...

[yeikiu]

obviously the first one is the master.. who find the exit and send the shortest way to the slave, who only have to follow it!