Marble Machine

A Lego Mindstorms NXT robot that collects a marble from the bottom of a marble run, lifts it up and drops it in to the top to form a continuous loop.

Marble Bot N uses all 3 NXT motors: 1 motor rotates the balanced arm via a worm gear, another is connected via a cam to the robots thumbs allowing it to close its hand and grip the marble and the third is connected via a cam to a ramp which is tilted to roll the marble on to the stand ready to be picked up.

Marble Bot's NXT claws pass through the stand which holds the marble and allows the claws to get underneath the marble and scoop it up. The thumbs then close to hold the marble in place as it is lifted up and over the robot.

Category:

Entertainment

Tags:

• nxt
• lego
• mindstorms
• marble
• pick
• up
• drop
• collect
• lift
• roll
• loop

[Adol48261]

I dont think he can make it any faster "n00b"

[xxSyphenxx]

0:26 ROFL...

Herrhaaayyynnn!! LMAO

[bloofer123]

Lego NXT??? Nice!

[mijnvideokanaal]

Good start!!! When you bulding you learn!!! What do you think about my marble-machine?

[fisheye210]

gear ratio... im from robocup 2010



[TheDudeFromCI]

Wow, that's cool. Must have taken a lot of time and effort to make it control itself and stuff.

[parsleysprigs]

sounds like this thing costs too much for how boring it is.

[chinesemonk]

@molinobeer They are geared motors with encoders. If you want to get technical they are not a self-contained servos because the error-sensing is handled externally but the system is there.

[molinobeer]

@chinesemonk

These are multi rotation geared DC motors with (possible encoder feedback), you move them sending the speed you want them to rotate, and if you want more accurate positioning you do it checking by software time-to-time you actual position with encoder readings.

Servos are rotation limited (some can be multi rotation) geared DC motors with permanent encoder feedback, which means that you move them by saying for what position you want to go.

I will not answer more comments.

[chinesemonk]

@molinobeer

Yes they is.

[molinobeer]

@chinesemonk

isn't servos..

[chinesemonk]

The most impractical use of servos I've seen yet, but I like it. Makes me want to dig out my old marble toys and motorize them.