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Found 174 results

  1. astral brick

    Unexplored markets

    - Gbc: because Lego can't pretend it doesn't exist - Marble Run: because Lego can't leave it to competitors - Rube Goldberg Contraptions: because The Incredible Machine made of Lego parts would be a natural fit There is a life beyond forklifts and cranes.
  2. Ultrament

    My new GBC module

    Hello everyone! This is my first post, so comment on any questions and request for GBC modules. Just a few days ago, I was on Rebrickable for a little bit, and thought of finding GBC modules. Well, I wasn't very lucky, because the only one I could find was a back-forth style lift. It was made using the First Responder set. I did not even have that set, as my largest Technic set was Street Bike. I decided to get my Street Motorcycle set, and make this:
  3. This lego GBC module uses the lego Mindstorms EV3 to power the module. It uses a robot arm style mechanism to lift the balls from the previous GBC module to the next one. It is quite reliable and has had almost no issues while I have been testing it. It is quite simple and small for a mindstorms GBC module but it is the first thing that I have ever made and programmed with it. (Do you recommend using the EV3 programming app or Python? I know Python quite well but have not tried using it for mindstorms before) I think it turned out ok for my first MOC using mindstorms, hope to make the next one much more interesting :) Instructions. Photos on Flicker.
  4. Good day, I hope that this is not an inappropriate topic for this form. I have been asked to create an introductory course on how to use Legos and technic pieces to build great ball contraptions. I have learned through the school of hard knocks and how to do it. But I was wondering if anyone in this group can help me develop a syllabus or outline on topics to include in a brief course that would assist students and adult fans of Lego get a better comprehension of how to build one. Any thoughts or suggestions would be greatly appreciated? Or if you know of any good resources that I could use as a framework for a program if you could share it with me or provide me the URLs or documents that would also be very helpful and quite appreciated. If you want to send me something my email is - Thanks - Daniel
  5. Hello all, I was checking the website from PV Productions for any new models, when I saw that they are now producing USB to Powerfunctions converter. Combined with any powerbank you have or simple usb-charges , this would give easy option to always have power for running GBC etc. Link = Has anybody already used this ? Or any experience with similar things ? Thank you for any advise you can give me.
  6. These two lego great ball contraption modules are designed to be simple and reliable so that they can easily be built by new lego gbc builders but still be cool and interesting to watch. I designed these GBC modules to be able to share the power/motor from one module, this means that you can easily power up to about 5-6 great ball contraption modules from one motor. You can also easily use almost any modern lego motor, including Mindstorms and lego powered up motors to power the modules. One of the reasons I built these modules is because I wanted to build some simpler modules that are easy to build. I hope you like it, if you want to build them I have made the Bricklink Studio file, part list and PDF instructions available for free on Rebrickable here: Conveyor || Stepper
  7. I have been working on my largest build ever and have hit a big issue. The 2 sets of frames keep flexing in a way that makes the decks be out of alignment. Any ideas how to fix this. Sadly I can not add a picture not sure why.
  8. Finally got the instructions finished and you can find them here: ( The instructions PDF will take a few seconds before it starts downloading. Be patient, it will get there. No need to click it multiple times. ) There is a single set of instructions (PDF), but it comes in two versions. The main version, which uses less common pieces, which are more aesthetically pleasing. Then part lists for a version which uses more common pieces and colours. I have included BSX part lists for both versions and BSX part lists which only contain the pieces needed to upgrade the previous version to this one. The previous version, BSX part list etc. can be found here: The instructions will allow you to create the Cup-to-Cup Type 1 module which you see in Akiyuki event videos from 2013 onwards. I don't think I would have been able to do it without the additional photo provided by Akiyuki and obviously, it builds on the work done by @djm and @Blakbird It is not a faithful copy of Akiyuki's module. The differences are: I changed the hopper so balls won't get stuck behind the spiral lift. I left the support used to get the balls from the lift to the first cup unchanged from the very first version. It works fine, so didn't see the need for a change. The offramp has been redesigned to work with this version. Akiyuki dispensed with the offramp in 2013, using a separate module to do it. The original offramp doesn't work with this version. I tried to keep it similar. Feel free to rework it though. There are some minor changes to the spiral lift to make it work better. It has been good to get this done, as I never liked the motion of original design. Having the motor so far from the cup-to-cup mechanism meant that it wasn't as smooth as you might like. Which is why I think Akiyuki changed it. It is called v1.2 since I class the original grey version as being v1.0 and the yellow version as being v1.1. v1.2 denotes the change in drive mechanism. This has not been event tested. I would advise testing/modifying as required before using at an event over a prolonged period of time.
  9. higgins91

    GBC two steps

    Hello, here is my last GBC module: IMG_20191215_160937 by alex peraux, sur Flickr Why two steps ? Well nothing to do with an internal combustion engine but simply a module that works in 2 times ... It all started from an idea (not necessarily new) of a carriage lifting the balls. This cart would pick up balls from a basket, go up the slope and empty once at the top. So I started with this part. To make a round trip to the cart there are several technical options (rack, string, chain ...) I opted for the chain. But I did not want a reversal of meaning at the bottom and at the top. The chain must rotate continuously. So I positioned the chain vertically and fixed a Liftarm on it, 2 axel and pin connector to offset the grip and here I am in the axis of the sprockets. This allows a time delay at both ends (the time the Liftarm goes around the spoket). In red the hook with the cart IMG_20191215_171821 by alex peraux, sur Flickr This done, I made the chassis to hold everything. IMG_20191208_190430 by alex peraux, sur Flickr IMG_20191215_161020 by alex peraux, sur Flickr Then the second part loading the basket, a chain with Liftarm will do the trick very well. We place the top of the chain above the basket, a large input tray that can contain several tens of balls and rolls my chicken ( typically French expression ) Well almost, because what happens when the basket tilts and the loading chain is running? Well, the balls fall to the ground: the nightmare. So you have to stop the loading chain when the basket is emptied CQFD( another typically French expression ). This is where the brain is agitated and lays a magnificent removable coupling of a 24T on a worm gear ! The basket in normal position presses 3 liftarms positioned vertically, these liftarms in turn press on the end of a liftarm. This liftarm is attached to 3 studs at its other end and can rotate around this point. At the end an elastic band allows the assembly to remain in the high position when it is not pressed on it. So the basket at rest pressing on the liftarm drives the 24T on the worm gear. When the trolley lifts the basket to load the balls, it no longer presses so the 24T is no longer in contact with the worm gear. I lost you all 2 small explanatory gif (which must be downloaded because flickr does not animate them): accouplement2 by alex peraux, sur Flickr accouplement1 by alex peraux, sur Flickr or in video, the coupling / uncoupling of the 24T on the worm gear (sorry it moves a little) For more photos see my album. And 2 videos for the price of one loading the trolley: and the full video feel free to comment ! Thanks for reading me
  10. I am planning to create new GBC modules in the coming years. It will be a combination of Lego Mindstorms and Lego Technic. So not mindblowing mechanical constructions like Akiyuki, but constructions that can only work because they are controlled by the intelligent Mindstorms brick. My first module that I am trying to build (still unsure if I can make it work), is based on the Planar Parallel Mechanism that I saw on Youtube: I find it really cool how it moves. And I thought: let's build this, and use the grabber (visible from time frame 1:23) to pick up balls at the left side of the GBC module and bring them to the right side. Here is an LDD sketch from the first prototype: And a small movie of the first test. The green markers are there, to put the prototype in the start position. That's my major issue right now: how do I now where the four legs of the mechanism are? Working on that now, will keep you posted. Suggestions and compliments are welcome ;-). Regards, Hans aka Mindstorms GBC
  11. A new video has been uploaded to our Youtube channel. In 2019, lots of new elements have been added to our layout. To name a few: the warehouse, able to store 60 containers with candies, with two independent stacker cranes, the four candy circles, and an updated delivery station. Also brand new is the PC software that connects everything. We have worked hard to get the software working stable and with success. You can see the result in the video. Enjoy the video! -- Hans
  12. This lego GBC module uses two gears for the main mechanism, one with 16 teeth and one with 15. This means that the inner gear meshing with the outer one will rotate slowly and in lean from side to side. The balls roll onto the "forks" at the bottom with the use of a timing mechanism which is attached to the main gear. It is a reliable module when it is on a flat table, but it does take some time to set the timing right. I have instructions on Rebrickable here. Hope you like it!
  13. After 2 months of building, here is my latest, biggest, and most complex GBC yet! The Mine I've had an idea in my head for a couple of years now, to build a really solid, fun, and original Human Powered GBC, and this is what I came up with. There are three modes: Fully automatic - where the GBC 'runs itself' Semi Automatic - Humans operate the Detonator, and the Conveyor/Stepper run automatic Fully Manual - One or Two Humans operate both the Detonator, and the Hand Crank Generator. It has a built in bypass lane, so if no one is operating it, balls will continue to flow through to the next module in the layout. Video includes a Behind the Scenes section, as well as a photo diary and commentary of build progress It's been a lot of fun to build (and play with!) and I'm super happy how it came out. It will be shown in public for the first time at Brickvention 2020 in January - Melbourne Australia.
  14. higgins91

    GBC Bucket

    Hello, I present you my last module, a GBB with bucket. The original idea was to use 1 Circle Gear Rack which would turn "all alone" on which would be fixed a bucket to pick up the balls. The first roll was a failure, I used 8 gears at 45 ° (4x 12T and 4x 16T) to advance the Gear Rack, but the sync of the teeth was too strict for the lot of play of the whole set . There was either a crack or a Circle Gear Rack lock on the gears. So I had the revelation: put in the back of the module, a complete circle that synchronizes the teeth of all gears in front! I then had a stability problem with only 1 Gear Rack, the guide length was not enough, so I put 2 and the result was much better. At the mechanical level an XL motor rotates an axis on which is fixed a 16T and the 16T directly drives the back circle. And the back circle drives the other 3 axes equipped with 16T. At 45 ° there are 4 axes that are only for guidance. The exit is on the right rear, it can be brought to the front by continuing the guidance via panels. IMG_20191101_112340 by alex peraux, sur Flickr IMG_20191101_112349 by alex peraux, sur Flickr IMG_20191101_112356_1 by alex peraux, sur Flickr IMG_20191101_112408 by alex peraux, sur Flickr IMG_20191101_114023 by alex peraux, sur Flickr and a vidéo: Feel free to comment !
  15. Thierry-GearsManiac

    [GBC]Compact cycloidal drive

    ... whis is, of course, a personal remake of a famous design from Akiyuki ! (because I admired how he turned/staged industrial speed reducers into ball transportation mechanisms) Another motivation was that some famous GBC designers (Josh DaVid, Sawyer) re-create well-known designs in a smaller form factor. And of course, the "self-challenge". So here is my currently final work (despite not yet well-polished regarding input and output's aesthetics) : UPDATE 20200410 : link to a higher quality video of a test : As introduced before, I haven't changed the core mechanism, which relies on the two following main tricks : using 180-53° liftarms for building the heptagonal structure of the "rotor" (only approximately 2° of mechanical stress per side) central pivot achieved by a pseudo gear bearing (pivot = sun gear ; rotor = planet carrier ; no ring gear) because no 7-beam hub does exist in LEGO and less than 7 beams is impossible because 7 is a prime number (whereas Akiyuki's rotor has 9 sides ==> 3 --double-- beams on a 6-hole pulley) The only changes I made (since the above older pictures) were : on the stator, new support structures for the big "teeth" and a brick-based rear wall (for preventing the rotor from wobbling and jamming) the ball catch mechanism : instead of the previous 3-finger layout (with one moving finger), I switched to Akiyuki's 2-(hollow)finger solution, using old crank parts and the material's flexibility : it takes less room, making the ball catching easier the ball can be pushed in/out in perfectly opposite directions, making it possible to load it at the very bottom and to unload it at the very top Then I managed to build the output ramp and input mechanism (input bin with basic steering + 1-by-1 ball distribution) and to adjust them, after several trial-and-error steps too. (I initially attached all the elements on a baseplate in order to quickly adjust them with respect to each other, before linking them together in the form of a hollow but stiff chassis). The mechanical inputs are a crank (behind the stator) and a motor input (behind the input bin).
  16. On Tuesday October 15, a free GBC workshop is organized for children in the age of 7 to 14 years old. The workshop is organized by Sioux Technologies to promote science and technique for the next generation. Location is Esp 101, Eindhoven (The Netherlands). Two of the models of Philip Verbeek (PV productions) will be used in the workshop. Philip himself will be there as well as trainer. More information can be found here: (please note that the workshop will be available in Dutch only, so is the information at the Sioux website).
  17. dgeehot

    GBC Event Kit

    This question is for folks that set-up GBC modules at events. Do you have an emergency/breakdown/set-up kit that you take to events? If so what do you have in your kit? I did my first event this past weekend and would like to make sure that I am better equipped for the next event which will be in October. Thanks, Daniel
  18. Hi everybody. This is my first post (except the "members' introduction"). Not being sure if it is the correct way/place to start I at last go into posting about my GBC projects, which are all only at WIP stage now. I already watched and read a lot of GBC resources (events videos, standards, famous modules and builders, balls sourcing hints...), which gave me a few ideas of custom builds, which will be new ideas as well as "remakes". But my work is currently slowed down by a few difficulties when leaving the dark age (getting used to studless building techniques when designing custom only, missing parts despite a huge initial BrickLink investment), so the results would show up bit by bit only. So, for more concrete stuff, my most advanced work is on a compact cycloidal drive, of course inspired by Akiyuki's one, but being a fully custom from-scratch and trial-and-error build. At its current state, only the core mechanism is available and it runs smoothly. However the ball transport (currently built on only one cycloidal "tooth") seems to be the hardest thing to make reliable, and it is not yet the case. A stiffer chassis (with the input bin and agitator + secondary ball transport mechanism will be required too. I'll build it with bricks mainly (when I'll find an opportunity to pick up my childhood stock). The core mechanism features an outer ring of 8 teeth, based on an octagon made up of 6L axles and 135° connectors, and a 7-teeth cycloidal disc (and some associated tricks), resulting in approximately 2/3 the size of Akiyuki's original design. So is my prototype worth a picture right now ? (a few other modules are planned but I built only draft/mock-ups of the core mechanisms now due to the lack of parts.)
  19. This lego great ball contraption module uses a set of "forks" attached to technic lift arms to lit the GBC balls to the next module. The lift arms have to lift when they can't turn any farther. The mechanism is very reliable, but it can't be running to slow. The mechanism that loads the forks looks weird, but it does work well. I had a hard time getting the design right but it works well now. If you want the LDD or file you can get them here.
  20. The Sun is a GBC module created by @PG52 The video of it in action is here: With his help, regarding additional images, I have created some PDF Instructions for it. The PDF file and Parts lists can be found here: If you want to link to the instructions etc., please just link to that page, as it contains mods, additional images, credits etc. The parts list isn't included in the PDF as Stud.IO isn't very flexible with that sort of thing. The digital file is not currently available. Known issues: I can jam and doesn't have a clutch system to deal with that. It is also a self feeding module. @dunes is currently working on a GBC circuit friendly version. In the instructions, there is a mod to replace the curve at the bottom of the top ramp. This is to remove the twist the flexible hoses cause which pushes the top ramp into the wheel. Notes: For the most part I have used commonly available pieces in regards to certain axle/pin colours. Where this isn't the case, it was done for specific aesthetic reasons and you can of course use the more commonly available colours. I think I mainly just did this for "The Sun" sign. Thanks to: @PG52 for creating the module in the first place and for the additional images. @Doug72 for helping to test the instructions. Additional: I have also added a mod for the Cardan Lift and will be doing instructions for Akiyuki's Cup-to-Cup v1.1, which is the version he is currently running, rather than the one which got reverse engineered close to the time he created the module. These are and will be available here: Enjoy.
  21. This Lego great ball contraption module uses mechanism with the transparent food covering type pieces (I have no idea what they are actually called) It is a reliable module, even though it looks like it is flexing a lot in the video. The tightness of the mechanism that holds the balls is able to be adjusted very easily to make sure that they pick up the balls each time. I have (as you can see) finally got some proper GBC balls to run my modules with. This module can hold one layer of them in the input bin before they get stuck, I would guess that that is about 30 - 35 balls. Like most of my recent modules it is compatible with my power sharing standard. The LDD file is on bricksafe here.
  22. Great Ball Pit

    [GBC] Multipath

    Hello, here is my latest module which will allow me to split the flow of balls into two separate outputs. I've wanted to do a path splitter for a while. So after seeing a module in a recent European GBC layout that used the Sports ramps in this manner, it inspired me to get started. This module has a recirculation function, massive input bin, and the ability to move balls out quite quickly. The biggest challenge when building this module was getting the sweeper motion to work as intended. If anyone here has a better solution for the sweeper linkage please leave a reply as it is something I'd like to improve.
  23. I came up with the mechanism for this module by accident when I went to put a axle through the middle of the gear, and thought "I wonder why I have never used the other axle holes for anything" and that is how this module started. The mechanism quite reliable, as long as you have the timing between the two parts of the module is right. The timing is easy to set up by holding back the last gear while the mdoule is running. Instructions are on Rebrickable here. I know that I am still using non-lego balls. Yesterday I went to buy them from lego bricks and pieces, I added them to my bag and then went to add the lego hogwarts express set to my bag as well. In the time that it took me to do that they went out of stock, hopefully they will be back in stock in the next few days. More photos.
  24. This lego GBC module uses three cardan gear mechanisms to rotate the platforms that the balls sit on. It is a reliable module when you have the timing between the loading and unloading mechanisms aligned right. The long technic axle you can see running through the front of the module is how it shares power between it and other modules. I am trying to make all my new modules able to share power in this way, as this way I only need one motor for every 4 to 5 modules. If you wan to build this module I have instructions on Rebrickable. More photos on Flickr. The mechanism to load the balls is quite simple, although it is not the most smooth. I would like to change the mechanism to something easier on the parts, maybe by making the main stepper tall enough to let the balls roll straight on. The unloading mechanism is inspired by Akiyuki's mechanism, although it is not exactly the same. This version uses the 2L rubber technic beams instead of rubber bands, and holds two balls instead on one.
  25. This is my latest version of my very first Great Ball Contraption module - the simple tipper. I have made a video showing the details and how it can be combined in a circuit of similar modules with bridges and common motors: HISTORY The first version was quickly made to a competition in my LUG back in 2007 The deadline was coming up and I did not have a video camera. The pictures (see them cut together in the video) were taking using one of those $20 'stick' digicams that were popular back in the early 2000's. The module was shined up for LEGO Fan Weekend in Skærbæk, 2007: The theme was Aquanauts, but this is unfortunately the best picture I have of it. I brought this and the green 'Logo Roco' module to the event. The other module had a tendency to tear itself apart due to being built using normal bricks and having a hammer to shoot the balls up - similar to the gameplay of the game Loco Roco. The next version of the module had the normal bricks replaced with Technic, the blue rails replaced with a tile and is much more open, making the balls easier to follow: Unfortunately lifting the ramp caused the motor to wear out prematurely, and the outbox was not easy to align with other modules. You can see it in action in the first video, and in this at 6:45: IMPROVEMENTS The latest module has a counterweight in the inbox to reduce wear on the motor The outbox is now to the side to avoid the moving outbox alignment issue: BUILDING INSTRUCTIONS For this reason there are also two building instructions: One for the outbox left and one for outbox right: Left: Right: MOTORIZATION The module can be powered by both an M or an L-motor The motor can be mounted both in the middle and at the sides (see the video for how) FUNCTIONS The inbox is 'antagonized' by moving back and forth: And the module is fairly open to make it easier to follow the balls move through: The holes in the ends can be used to connect other modules of the same kind using pins: You can use bridges to make things more interesting, and common rail motorization to reduce the amount of motors required: This will be my last 'simple' module for a while. My plans are to make a couple of really interesting ones for the upcoming LEGO event in Fürth. Take care, and remember if you follow the building instructions: Colors are not important in GBC!