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A GBC Collaboration

What is a Great Ball Contraption?

A great ball contraption (GBC) is a machine which receives soccer balls or basketballs from one module and passes them to another module, rather like a bucket brigade. Modules built according to the GBC standard can be assembled into a collaborative display without pre-planning or modification. The GBC standard is minimal, permitting the builder great flexibility in designing the mechanism by which balls are moved from the input to the output. The otherwise pointless handling of balls, and the myriad ways this is accomplished, gives great ball contraptions the impression of a Rube Goldberg machine.

a stair stepper module

• Frequently asked questions
• About this wiki
• Getting started

Upcoming GBC Events

North America

• Brickworld Chicago, 2019
• BrickCon Seattle WA, October 2019
• BrickCan Richmond BC Canada, May 2020

Europe

• Festijn met Bouwsteentjes, Zeelandhallen, Goes, NL, Februari 23-24th, 2019
• Festijn met Bouwsteentjes, Vanzantenhal, Nieuw-Vennep, NL, April 6-7th, 2019
• Brickmania Wetteren, scheppersinstituut, Wetteren, B, April 20-21th, 2019

APAC

• Canberra Brick Expo - 10th and 11th August 2019, Hellenic Club of Canberra, Matilda St, Phillip, ACT, Australia
• BrisBricks Brisbane LEGO Expo 2019 - 1st, 2nd and 3rd October 2019, Chandler Arena, Sleeman Sports Complex, Brisbane QLD, Australia
• Bricktober Western Australia Lego Exhibition 2019 - 12th and 13th October 2019, Curtin Stadium, Bentley, WA, Australia
• Brickvention LEGO Expo - 18th and 19th January 2020, Royal Exhibition Building, 9 Nicholson Street, Carlton, VIC, Australia

See also Past Events.

Edit events

Browse

• List of great ball contraption resources
• Building Techniques
• Lift mechanism
• Widget
• Modules

Contributing

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