Lego GBC by Lawrie George
Lego GBC or Lego Great Ball Contraption is a form of Rube Goldberg machine where the aim is to move Lego sports balls from one machine to another.
The standard defines the rate of ball flow as well as the input and output bin sizes, and by having a standard it allows anyone to build a GBC module that they can then bring to collaborative displays.
Getting Started
Resources for getting started in Lego GBC.
GBC Modules
GBC modules I have built.
GBC Instructions
GBC modules with instructions.
Recent Posts
Brick Around The Block 2020
Brick Around The Block was a unique take on Lego shows in that all the displays outside in peoples yards while attendees walked the neighborhood looking at them. The GBC layout was no exception [...]
Lego GBC Batch Counter
Lego GBC Batch Counter is a Lego Great Ball Contraption Module built for the Great Ball Pit - Challenge 2020, and is a module designed to output a batch of exactly 13 balls (or [...]
Bricks by the Bay Vision 2020 (Virtual)
Bricks by the Bay took their show online this year and I got to present some highlights of my GBC loop like my lowered GBC section to the attendies. [...]
Seeing Lego Great Ball Contraption Shows
Lego Great Ball Contraption is a global phenomenon and shows happen throughout the year, to find an event near you see the links below.
Public Events
Public Events are where you can see Lego GBC modules in action.
(To participate you will need to contact the event organizer.)
AFOL Events
Adult Fan of Lego Conventions where you can meet other Lego GBC enthusiasts.
(They typically have Public days where you will help run a GBC loop.)
Coordinating GBC Shows
Coordinating GBC layouts can be a lot of fun and a lot of work, see the links below for my notes on the equipment and collateral needed for running GBC shows.
Coordinating GBC Shows
All the supporting modules, equipment, and collateral needed to run a show.
GBC utility Modules
Lego GBC Utility Modules including Reservoirs, Trains, Bridges, and Returns.
GBC Gear
GBC Gear including instructions, stickers, postcards and more.