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GBC LEGO ball pump module
Here is my variant of the GBC (Great Ball Contraption) LEGO ball pump module original designed by Philippe E. Hurbain.
About this creation

Here is my variant of the GBC (Great Ball Contraption) LEGO ball pump marble module design by Philippe E. Hurbain. I love marble carousel modules.

The Great Ball Contraption (GBC) is a concept invented by Team Hassenplug (Steve Hassenplug): set up some kind of standardized interface for LEGOŽ based modules to enable them to interact, in this case to pass a LEGO ball. Based on this standard, LEGOŽ builders distributed all over the world are able to build their particular modules to take part in this special kind of LEGO Oriented Architecture (LOA). There exists a set of these modules already, mainly in the United States. This page is to encourage people to build GBC modules!

I used for this module the PF regular motor (part no: 58120cx1).

To lead the LEGO soccer balls (part no: x45px1) and basket balls (part no: x493px1)one by one into the ball pump a 10x10 dish (part no: 50990) is turning around.

Wedge bricks form a circle around the dish.

The basket can contain more then 150 soccer balls.

I use a PF Electric Power Functions 9V Medium Motor 3 x 6 x 3 (part no: 58120cx1) for this GBC module because it is possible to control the module by a NXT (part no: 53788) using the Hitechnic IRlink.

Please watch my video of the Ball Pump module hosted at

Detail picture of the feeding device...

Please check my site for more GBC modules and other technick and pneumatic LEGO and NXT related projects.

If you are interested to build GBC devices, please take a look at the following list with GBC links...

Have fun!


 I like it 
  July 6, 2012
I think it was your models which I saw on YouTube. The ball factory was awesome. Everyone who I knew saw it called it utter brilliance. That is no lie. Actually, it's better!
 I like it 
  June 12, 2009
If you add some extra Mindstorms you can make a sorting arm to sort them. I can see many uses for this thing, like packaging jelly beans
 I like it 
  May 6, 2008
Thats really good! I still don't get the LOA thing, but it's still a cool functioning machine. Lol if you look at it the right way, it looks somewhat like a big, blocky, yellow llama. lol. Anyway great creation! -
 I like it 
Hobonator 912
  May 5, 2008
cool,but can u make it throw them harder? its probably impossible with the lego motors rite? too weak i think
 I like it 
  May 5, 2008
Wow, that's pretty cool. I'm not sure what it could be used for, but the mechanics behind it are very impressive. I like the feeding device(?) built into the basket that allows one ball to enter at a time.
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Added May 5, 2008
 You are at the beginning of this folder. NXT bot based on Hailfire Droid Wheels
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