PV-Productions

Build Great Ball Contraptions from existing LEGO sets.

LEGO compatible electronics & accessories.

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Building Instructions

Building Instructions

Explore the wonderful world of Great Ball Contraptions and so much more! Created completely from official LEGO sets!

Electronics for LEGO

Electronics for LEGO

Engineer without limitations!

STEAM Education & Workshops

STEAM Education & Workshops

Learn by Play. Play by Building

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Popular Products

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GBC Balls
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Spirograph Spinner – 42055 Building Instructions
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GBC 21 Mine Factory – 42055 Building Instructions
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GBC Funnels
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USB Power Box
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GBC 36 Crazy Carnival – 42082 Building Instructions
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GBC Starters Pack
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From: Original price was: €127.70.Current price is: €109.62. Select options
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GBC 53 Marble Music Machine – 42146 Building Instructions
Rated 5.00 out of 5
Original price was: €34.95.Current price is: €29.95. Add to cart

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Latest News

Music was my first love

February 27, 2024 February 27, 2024

Why we are excited about our upcoming GBC 53 Marble Music Machine you ask??

Well, take a look for yourself! Marble music for real! You can program any song on the programming wheel.

Created entirely from the LEGO 42146 Liebherr Crawler Crane LR 13000 set.

Move the Mill

February 23, 2024 February 20, 2024

Christel from Switzerland build our GBC 47 Mill Madness – a 42114 alternate build and she has is running beautifully. Great Christel and thanks for sharing with us!

If you look carefully you can see a portable USB power bank powering our USB Power Box which powers the LEGO Powered Up Technic Hub that this LEGO sets uses. Awesome!

Have you also build one of our models yourself?