Last year we provided a very cool workshop for the HetMartinBuber college in the Netherlands. Students used programming, mechanical and artistic skills to create beautiful patterns. All was possible by using our Smart Spirograph Spinner and Pybricks for coding.
Programmable Spirograph Workshop
Recently we got this email from a dad who bought our GBC 52 Flight Fair for his child.
My child would like to thank you for GBC instructions. I am sending a picture of a letter my son wrote to you. It says:
—-
To: PV Productions
I like your GBCs!
I am also happy that Flight Fair is finally finished! Thank you!
—-Thank you for all those products and services!
Thank you for those kind words and awesome video! He even connected our GBC 49 Geneva Drive to it in sync. How cool. You can build this as well. Get the building instructions, GBC Balls and other optional accessories via the buttons below:
Once every so often we return to this video which is a major inspiration behind our upcoming GBC 53 Marble Music Machine.
Only one can combine engineering and music all in one this cool looking. The one and only Wintergatan!
The GBC 53 Marble Music Machine (created from the LEGO 42146 Liebherr Crawler Crane LR 13000 set) will also be able to play music using GBC Balls!!!
Fun fact: Wintergatan also uses LEGO parts on the programming wheel. This wheel enables them to program the music notes. You can clearly see it at minute 1:30!
Nigel Doyle created this very nice looking LEGO Ball Clock on his Youtube channel. It keeps time by rolling balls on tracks which display the minutes and hours. One problem, when using the LEGO battery box the power will drop over time which makes the time fall behind.
Our USB Power Box to the rescue! By using our USB Power Box, Nigel was able to keep a constant voltage which results in a very consistent time display. Great use case and very nice model. Keep up the great work Nigel!
Here is what he wrote himself in the description.
Here’s my latest creation, a rolling ball clock. All my own work and design but inspired by the Chronomeans Dunyazad rolling ball clock.
The clock is powered by a Powered Up motor controlled by a simple one block motor node on the Powered Up App running on an Android phone. To maintain a constant voltage I’m using a USB power supply from PV Productions in the Technic Hub. This is then plugged into a mains powered USB charging hub.
I’ve had to use steel ball bearings as Lego GBC balls aren’t heavy enough to trigger the release mechanisms. The green wire is 3.3mm line trimmer cord. The other non Lego elements are some nuts used as counter weights.
The clock is reasonably accurate losing or gaining about 10 – 15 seconds per hour. To adjust it’s just matter of changing the speed on the code block slightly.
12 o’clock is displayed by no balls. The motor spins at about 125 rpm, it then goes through 3 x 1:5 gear reductions to drive to the 2 big red axles. These rotate once per minute and therefore could be considered a second hand. There’s always 2 balls in motion so it takes 2 minutes for ball to move from the ball feeder to the top.
The reset mechanism resets the 3 release mechanisms every minute whether they need resetting or not.
The whole project has taken about 3 months from start to finish. I started with a few sketches then prototypes of the various mechanisms to test whether I could make it all work. There has been a massive amount of fine tuning and refinement to get to this point of a working model.
The clock is fairly reliable and can run for hours with no issues but like many GBC’s you can get the occasional ball doing what it’s not supposed to.
