Search the Community

Showing results for tags 'great ball contraption'.

More search options

  • Search By Tags

    Type tags separated by commas.
  • Search By Author

Content Type


  • Frontpage, Forum Information and General LEGO Discussion
    • Frontpage News
    • Forum Information and Help
    • General LEGO Discussion
    • The Embassy
  • Themes
    • LEGO Licensed
    • LEGO Star Wars
    • LEGO Historic Themes
    • LEGO Action and Adventure Themes
    • LEGO Pirates
    • LEGO Sci-Fi
    • LEGO Town
    • LEGO Train Tech
    • LEGO Technic and Model Team
    • LEGO Mindstorms and Robotics
    • LEGO Scale Modeling
    • LEGO Action Figures
    • Special LEGO Themes
  • Special Interests
    • Minifig Customisation Workshop
    • LEGO Digital Designer and other digital tools
    • Brick Flicks & Comics
    • LEGO Mafia and Role-Play Games
    • LEGO Media and Gaming
  • Eurobricks Community
    • Hello! My name is...
    • LEGO Events and User Groups
    • Buy, Sell, Trade and Finds
    • Community
    • Culture & Multimedia

Find results in...

Find results that contain...

Date Created

  • Start


Last Updated

  • Start


Filter by number of...


  • Start



What is favorite LEGO theme? (we need this info to prevent spam)

Which LEGO set did you recently purchase or build?



Website URL








Special Tags 1

Special Tags 2

Special Tags 3

Special Tags 4

Special Tags 5

Special Tags 6

Country flag

Found 26 results

  1. 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.
  2. A new topic to attempt to centralize information, improvements and discussions about the most iconic Great Ball Contraption made by Kawaguchi Akiyuki,GBC Ball Cleaning Machine The thread is also a centralized location for all variations as well as newer design concepts of Ball cleaning machines.
  3. 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.
  4. 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.
  5. 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.
  6. 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.
  7. Great Ball Pit

    LEGO Boost Pachinko GBC

    Ask me anything about my Lego Boost GBC Pachinko module. It has a jackpot payout when the ball goes into the jackpot area. The conveyor is run with the Boost external motor, and the onboard hub motors are controlling the aiming mechanism and the jackpot payout door. Video below
  8. This lego great ball contraption uses a shooter mechanism to shoot the marbles into a castle. The range of the shooter mechanism can be easily adjusted with a gear at the back, it uses a large linear actuator attached to a shock absorber to do so. Part of the back of the castle is made from lego 6L half beams to slow the balls down. I have the LDD file for this module here. Do you like this kind of decorated module or do you think it is better to just focus on the functions? I like this kind but it uses a lot more pieces and takes a lot longer to build.
  9. I'm back with another module and video. This time I've created a small, simple conveyor belt that is proving to be quite reliable. As well I've shown how you can modify it to make it your own creation. Instructions for this module are available on my website. Here is another version I've made. I'll be posting the video for this one next week. Here is the video for the Jade Dragon variant.
  10. RohanBeckett

    [GBC] Hailfire Loops

    So what do you build, when you have 4 Hailfire wheels? an oversized GBC module! I had an idea to build this a while ago, and finally finished it for Brickvention 2018, in January. However, it wasn't reliable enough, and ended up needing 2 motors to drive it. I recently rebuild the main geartain, using better parts, and working hard to get rid of all friction points. It now runs MUCH better, on a single L Motor. Front loader section is an Akiyuki design, from Cycloidal Drive. The rest, including the Brick Separator down-chute is my design. Due to the design, I was not able to use the inner teeth to drive the wheels... as the scoop would interfere.. so I had to drive it by the outer rim This has been done in the past, by other builders, using tyres. Somewhere along the line, I noticed that the old Samsonite gears from 1965 meshed perfectly! (The Expert Builder ones do not) I attempted to have the stepper/loader synchronised to the wheel, but unfortunately, I was not able to get any combination of Hailfire external teeth + Samsonsite to equal an even/repetitive interval. Turns out that it takes 7 revolutions of the Hailfire, before the same tooth on the Samsonite match up again! So.. that does mean, that occasionally, it'll feed in a ball at exactly the same time a scoop passes... and while most of the time, it bounces back into the main wheel.. sometimes, it bounces back, and spills. There is a small collection point for such spilt balls The Scoops are a simple build, and are held in place via friction the Hailfire wheels are supported by 1L liftarms on an axle, and there are 4 rubber wheels at N/S/E/W, that the Hailfire leans against, to run smoothly The drive-train feeds up and down each module - with the motor attached at Blue, since it's at the mid-point.. At the bottom of yellow, it connects to the front loader section. And since it's SO big, I needed to build it modularly! So it all comes apart easily! Looking forward to running this improved version at Canberra BrickExpo next month! Oh.. and apart from the depth.. it is actually GBC standard! :)
  11. This lego great ball contraption miniloop features a redesigned Cardan mechanism to lift the balls up. It is designed to be as reliable as possible while still being interesting. One of the parts that make it extra reliable is the loading mechanism having two technic pins to stop more than one ball rolling out at once. It can be powerd by a M motor or by hand but if you power it by hand you have to do it at the exact right speed, so it it better to use the motor. The mechanism uses two 12 tooth gears meshing together witch normally dosn't work to well but because they are slightly more than 2.5 studs apart it work well. If you want instructions I have the .lfx file here on Bricksafe or video instructions here. As you can see the differential gear is held in place by a 16 tooth gear, it works well but if it jams it separates you have to fix the timing of the whole miniloop. I am planning to reinforce it in the future with a 3L technic beam.
  12. RohanBeckett

    [GBC] Carousel

    GBC Carousel During the last few weeks lead up to Brickvention 2018, in January, I decided to have a quick attempt at building a module I have seen on other GBC videos I take no credit for it's general invention, and I actually can't remember where I saw it.... it's just one of those 'cool ideas' that sticks in your head, and you decide to sit down and recreate it from memory! If I find a video, I will link it.. or if anyone knows who built it first.. please post, so I can credit them! For my version, I decided to use the smaller Lego tracks, from the Indiana Jones minecart.. they are fairly cheap on BL, and work very well, and doesn't take up too much space on the table The main ring is made of fairly basic pieces... always a great chance to use those less popular colours! I was quite happy with the red and yellow - giving it a circus-like feel The inverted slopes are fairly new, and worked very well at helping balls slip down the holes I had a bit of fun with some mixel faces, and eyes on the outer ring, as you can see in the video! The track is supported by a nice sturdy frame.. I can pick the whole thing up in one hand, and it doesn't flex. It is driven by train wheels, at each quarter/axis. With the first prototype, it didn't drive very well, and I needed all 4 corners to be driven. But I was testing with bare track, which is very light. Once I added the bricks/plates, it became heavier, and I only needed 2 driving wheels to operate it.. This simplified the design I needed to make it GBC standard, so a simple input + conveyor was added. If balls happen to drop, as the holes are passing, the large tile/catcher underneath sends them straight through. If they land on the wheel, then they go for a ride, accumulating in a pile, before the holes come around again, and they drop down The input rate is just right, so that not too many balls accumulate to 'overflow', and spill..occasionally balls don't fall down the hole, and they just wait for the next loop. For a bit of fun, I decorated the 'engine' in the middle. Note that I have 2 Motor inputs. This lets me alternate between an XL, and M motor, without having to alter power. I wasn't sure at the time which motor would be best (or what I had spare to use) It turned out to be a very reliable module, and I'm quite proud of how it came out. It's nice that there's no major timings to work out, and I think it's reasonably interesting to watch aaaaand... here's the video! :)
  13. Hey guys, Here's my latest module. It's a simple conveyor in the Lego Star Wars theme, which depicts the famous trench run scene in Star Wars Episode 4. There is an X-Wing, Y-Wing, Tie Fighters and Vaders Tie Advanced. Mechanically the conveyor is very simple. Surprisingly, animating the Turbo Laser took quite a bit of time to get the movement and speed to something I was happy with. Images and Video below.
  14. Today I present you with my "G-Model" of the 42049 Mine Loader Set. It is a Layout ready GBC module created entirely out of parts that are found inside the 42049 Mine Loader set. By default it can be hand powered, and it has a recirculation function for stand-alone play. You can upgrade it with a motor and disable the re-circulation and run it with other GBC modules. Having said that, the inbox doesn't meet the GBC standard rule for accepting a batch of 30 balls. I had to rebuild the module 4 times before the final model was realized. The first 3 times were failed lift mechanisms, and the 4th was rebuilding the module mirrored because with the addition of the recirculation ramp, it was too hard to see the mechanism when it was running Left to Right. My favourite part of the module was the success of adding the engine and working piston after I had already completed the module.
  15. Our big yearly Lego convention here in Melbourne Australia, was on last weekend, and we managed to put on a pretty good GBC layout Thanks to @rasikaa this year for coordinating it! Here are a few videos: My video, on Sunday Saturday: (most modules running - 111) @9v system's Akiyuki-only layout: Everyone else in the team, incl @Captainowie, @Cadder and others did a great job keeping everything running so well... We only had 76 modules last year, and the jump to over 100, especially with so many brand new modules, is a lot of work! I was happy that a couple of new ones of mine (eventually) worked really well.. and I'll probably do a separate post on them all
  16. Hey guys, Since completing work on my Tri-Sep module, I've completed what I'm calling the Greyline Series of modules. This series includes: Greylime, Reservoir, Bucket Boost, and Tri-Sep. It is all running off of two 9 Volt Train Controllers. Please enjoy the video. Individual videos for these modules are available on my channel, the Bucket Boost video will be released later this month. It is the most complicated module I've made.
  17. Greetings all. I've recently been playing with, and teaching myself how to create instruction .PDFs using LPub with the intention of modelling/creating instructions for some of the GBC Modules I have (physically) built, both MOCs and Mods. To start off while learning, I used something that 's quick to build and only uses a small number of parts. So I present Cadder's "Found Ball Bucket". Backstory: This is a little something I knocked together while displaying at Brickvention 2017 and fine-tuned at BrisBricks 2017. Originally it was a 'catcher' that I made for a high module displayed at BV2016, essentially because I had 4 spare Lego Sports arena corner units... but it quickly became more useful. Occasionally at GBC shows, a rogue ball will "escape" and be picked up by young kiddie spectators who will invariably try to reach across the displays with an ever-helpful "'Scuse me mister! I found this!" Rather than risk knocking over or bumping/misaligning the working GBC modules, it became really handy to reply "Awesome! drop it into the blue bucket!" This had the great side-effect that it engaged said kiddies.. and with an added "See if you can make it spin...", makes the GBC display somewhat interactive. It's also versatile enough that it can be placed pretty much anywhere on the GBC circuit and feed found balls back into the circuit without too much disruption. It's deliberately built high enough that the return chute is higher than the 10-brick standard GBC input size. Returned balls should just drop straight into any module's Inbox. I dare say it could be double-purposed for its original use as a catcher - for, for example, a tower drop, shooter or flicker module. So. At first I really wasn't sure where to post this, and although not strictly a GBC module itself, it *IS* a very handy tool (I've subsequently built more than one) for GBC displays that I hope other GBC organisers/displayers might like to adopt. I also intend making a sign to stick on the front, something akin to the "Hey!" logo on the back of the City boxes. (ie, Along the mines of "Hey! Find an escaped GBC ball? Drop it in here!") Instructions in form of PDF file here. Also, because it was modelled in, you can use Bricklink's Step view builder instructions here. (and buy parts) cheers!
  18. Hi Everyone. I'd like to show you my GBC Module that I made called "To and Fro". Definition: to and fro /ˌto͞o ən ˈfrəo͝o/ adverb - in a constant movement backward and forward or from side to side. verb - move constantly backward and forward. noun - constant movement backward and forward. I wanted to design a GBC module that I hadn't seen done before. The main feature of this design uses a string and pulley system, with different levels of mechanical advantage implemented to get the timing of the mechanisms just right. This GBC module adheres to Type 1 of the GBC Standards, processing one ball per second on average ( The main focus of this module is the 'ladder' in the middle which raises and lowers using string and pulleys. You can see this in the video between 1:48 and 2:04, and I'll try to describe what is happening. First of all, the end of the string is attached to the frame, and goes down to the cranks. The exact length of the string can be adjusted, similar to how guitar strings are tightened. The cranks have pulleys on them, so the string actually moves twice as far as the diameter of the cranks as they rotate, but at the same time the force is halved. Next, the string goes up to a pulley fixed on the frame, then down and around another pulley, and back up again. The bottom pulley is attached to the moving part of the 'ladder'. This halves the distance that the 'ladder' moves compared to the string, but also decreases the force required to do so. The string goes over another static pulley at the top, and then back down to the outside edge of the moving part of the 'ladder'. To move the outside edge of the 'ladder' requires the full force of the string to move. Due to the mechanical advantage of the different parts of the pulley system, the 'ladder' wants to move up first since this takes less force, but once it hits a stop at it's upper limit, the string then provides force to the outside edge of the 'ladder' which causes that last little 'kick', which lets the balls roll to the other side. This module can also be broken down into four smaller sections for easier transportation: The motor which is part of my Automatic Motor Shutoff and Alarm System, The 'hopper' and 'ball diverter', The 'ladder', and The 'waterfall'. There is only one M-motor powering this module and that helps ensure the timing of each section is in sync with the next. The motor section is attached to the 'ladder' section with a universal joint, and the 'ladder' section is attached to the 'hopper' section with a CV joint. The 'waterfall' section doesn't need any motor input, so it is attached to the 'ladder' section with a single axle that allows it to be detached easily. Between the 'ladder' section and the 'hopper' section is differential (hidden away underneath), and I can manually adjust the rotation of this differential via a worm gear to get the timing between each section just right. Apart from this one worm gear used to make timing adjustments, I haven't used any other worm gears as I have seen the damage they can do to GBC modules if something gets jammed (although, in theory, my Automatic Motor Shutoff and Alarm System should stop this from happening anyway). There are quite a lot of gears within the drivetrain, but it runs quite smoothly. When I was creating it I thought the weight of the 'ladder' would cause a lot of strain on the motor, but when one side is going up gravity is making the other side go down which cancels out a lot of the strain. Jams sometimes occur in the 'hopper' and 'ball diverter' sections, and are typically caused by too many balls in the hopper, or the timing of 'ball diverter' not being adjusted correctly. I have had this running at a public expo that my LUG held, but I was too busy to baby-sit this module, so it was only running part of the time, but when it was running it ran without issue. This is the first GBC module that I have made, so I spent a lot of time trying to get it working consistently. I hope you like it. Any constructive feedback/comments/questions are welcome. UPDATE: I have created an LDraw/MLCad file of my GBC module. Read more here. Music:
  19. The Ballkirk Wheel is a GBC based on the Falkirk Wheel ship lift near Falkirk, Scotland. If you want to see it in action, go straight to the video: Conception I love the concept of GBC and I wanted to build an original GBC module. Ten years ago I got the idea of using the Falkirk wheel. Its continuous mechanism should be just as good at lifting balls as it is at is at lifting ships. Unfortunately back then the inner hole of a large turntable was not large enough to accommodate a 14mm ball plus lane. The only alternative was to use Hailfire Droid wheels but since I was not quite ready to sell a kidney to support my hobby, I dropped the idea. Fast forward ten years and I revisited the idea. @jojoguy10 built a LEGO version of the Falkirk wheel, but noone had made a GBC module out of it yet. The new large studless turntables have no gears in the centre hole, which means that it's (just) large enough to fit through a lane with balls. So I ordered six of them from Bricklink and started building. Building Process When prototyping I tend to use a mix of colors. This limits search time and makes it easier to discern individual bricks. Once a module is finalised, I recreate it in so I know how to rebuild it when my BrickLink orders arrive. This is the first time I used a CAD program during the building process. I had no experience with MLCad or LDD and I started out with the newest kid on the block, There are still a few kinks to iron out but I think has a great balance of simplicity and power. Gondola orientation The orienting mechanism makes sure that both gondolas stay upright during the entire rotation. This prevents balls and boats from being spilled. The principle is demonstrated by this video: LEGO was actually used by the designers to demonstrate the mechanism for the Fallkirk Wheel. My implementation is very straightforward. The center turntable gear stays stationary. As the wheel revolves, the smaller gears between the center turntable and the outer turntables cancel out the rotation of the gondola, thus keeping it upright: Retarding Mechanism The most challenging part of the build was the intermittent rotation mechanism. The wheel needs to pause shortly to load and unload the balls. Initially, I wanted to use a mechanical solution for this. I have experimented with many different solutions, none of them satisfactory. I started out using a rotating cam that would temporarily block the rotation of the wheel. This did work but it was very imprecise and jerky: In movie projectors and watches something called a Geneva Drive is used, but I did not succeed in creating a version with sufficient angular precision to reliable loading of the balls. Another possibility involves a sliding mechanism on a piston driver, thus first converting rotating motion into intermittent linear motion and then back to intermittent rotating motion. Although motion was smoother than with the cam mechanism or the Geneva drive, it was even less precise and more bulky. Eventually I caved and just used a Mindstorms NXT to drive the wheel. The program is exceedingly simple: Rotate 900 degrees at 80% power Wait for 1500ms Repeat I'd be really interested if someone comes up with a mechanical mechanism, because using software to solve this issue feels like cheating to me. Loading Hopper Since the mechanism completes one cycle every three seconds, on average three balls should be lifted during each cycle to comply with the capacity of 1 ball per second which is required by the standard. For this, a pusher is located at the bottom of the hopper like in Akiyuki's Ball Cleaner. For the mechanism, I took my inspiration from @Lasse D's ball pump. A counterweight on the back of the hopper smooths pusher movement. I currently feel the pusher is the weak point in the contraption. Because it is driven by the same motor as the wheel, it spends half the time not loading any balls, thus limiting capacity. Since 5 balls fit on the piston simultaneously, theoretical maximum capacity is 1.66 balls per second. But when multiple balls are stacked in the hopper, the pusher loads less balls per cycle, limiting capacity. One solution would be to use a second motor to continuously drive the pusher but I prefer the contraption to be driven by a single motor. Controlling Ball Flow The balls move through the wheel because the entire assembly is tilted. The incline is 1 brick per 15 studs, or 1 plate per 5 studs. This corresponds to an angle of 8% or about 5°. The balls should only move when the wheel runs are oriented with the input and output runs. For this both the input run and the gondola runs are equipped with gates that are closed when the wheel is in transit: As usual, the simplest solution turned out to be the most reliable. A sliding gate is held town by gravity. The input gate is opened by two 42610c02 wheels [LINK] mounted at the end of the arms, which sadly are not available in Stud.IO. The output gates are opened by the gears of the orienting mechanism, as illustrated in the following image: Reliability The biggest challenge of a GBC is making it reliable. Those little balls have a mind of their own and tend to find every nook and cranny of your contraption to escape it, jam it or even break it altogether. I tested the contraption with beads with large holes which get stuck easier than the standard balls. The Ballkirk Wheel has gone through several revisions to improve reliability: Incread the incline to prevent balls from stopping in the middle of a run Like 7 versions of the input and output gates Enlarged the hopper and the pusher for greater capacity Several modifications to the pusher to reduce friction and increase reliability Addition of a counterweight to the pusher for smoother operation Added a shield to prevent ball spillage at the exit lane Added a bumper at the foot of the back support to push back balls that have missed the exit Together, these improvements have resulted in a fairly reliable GBC. I have tested the Ballkirk Wheel for an hour of continuous operation with no blockages and only one ball spilled. Maximum throughput is about 1.4 balls per second. Summary Thanks for reading this far, I hope you enjoyed it! Please let me know what you think! I haven't gotten around to creating instructions and I'm not sure I ever will. However, if you'd like to recreate this contraption, you can download the file: Ballkirk - file.
  20. Hi. With the quality of entries I've seen so far, I don't like my chances of winning, but it would be nice to get a badge! I'm going to use this contest as an excuse to redo a previous model of mine - a GBC module powered by pneumatics. This is what the old version looked like: I have used it in a previous display, but it has numerous shortcomings as a GBC module. The output is not in line with the input, violating the spec. It was what I needed at the time, but it's not suitable for general use. The output is impolitely high. Again, it was what I needed at the time, but I couldn't put this into a normal circuit. It would frequently jam. It spilled lots of balls. I will be using the same sequencing (basically the simplest alternating sequence possible). I had toyed with the idea of something more complicated, but 1) I couldn't get my head around how to make the sequence I wanted, and 2) it would have been too slow anyway. I probably won't make a compressor for this one, leaving it hand-operated. The idea being that in a display it can be somewhat interactive - the audience gets to power the Contraption (or at least some portion of it). Best of luck to all entrants! Owen.
  21. For Brickfete 2016 and the Friends contest, I made a Friends-ly tree slide GBC module. The input and output are to GBC standards so it should play nice with other GBC modules. During the event I had make various modifications and fixes. Although, it worked great at home. I think I got the bugs out of it now. It had pretty good response and feedback from girls and moms. LEGO Friends Tree Slide GBC Module by dr_spock_888, on Flickr Watch the balls climb up and slide down.
  22. Back in 2013, I built and posted about my first NXT ball machine (you can view the original post at http://www.eurobrick...topic=87788&hl= if you are interested). While that machine worked, I learned a lot while building it, so I wanted to create an entirely new machine that incorporated what I learned. I also wanted to make it bigger. Now, in 2015, I have completed my second NXT ball machine. This one is almost 6 feet tall, and over 7 feet wide. The longest span is over 4 feet. It uses simpler lift mechanisms that are more reliable (though they do still jam occasionally -- I have an idea about how to fix that which I am planning to incorporate if I ever build a third one). This machine is also much less sensitive to how level the surface is that it is sitting on. As a result, this machine is a lot nicer to set up and display at a show. It is also much more open, giving people a better view of the balls as they move through the machine. Here's a YouTube video showing the machine in action: There are two possible paths through the machine. The path splits at the top of the left tower with some balls following the gray track that crosses the width of the machine several times. The other half of the balls follow the silver track that spirals down the left tower. Let me know what you think! Ben
  23. Hello Eurobricks, I'd like to present you with a collaborative build that I made with BrickJunky for Brickworld Chicago. The idea was to present our interpretation of a themed GBC (Great Ball Contraption), though this build does not follow the established standards for a GBC. For those unfamiliar, a Great Ball Contraption is essentially a machine that moves balls from one place to another in creative ways. We were incredibly honored to be nominated for Best Mechanical build at Brickworld and I'd like to thank everyone who came up and talked to us at the event. It was my first Brickworld and I was blown away by the support from everybody! In particular I'd like to thank Steve Hassenplug and everyone from the GBC section for their help and support and we look forward to incorporating a similar build into the actual GBC layout! Be sure to watch the video! Enjoy!
  24. This LEGO ball machine was constructed using 10 motors and thousands of bricks. Its 14 balls move continually through the machine, taking approximately two minutes to complete a lap. Two Mindstorms NXT bricks control the green lift, blue lift and ball counter. A combination of Power Functions and traditional 9V motors drive the remaining lifts. The machine is built entirely from LEGO -- even the balls are LEGO parts. Width: 63.5 inches Depth: 24 inches Height: 30 inches A video showing the machine in action is available on YouTube: Let me know what you think! Ben
  25. We are here to pump you up. Presenting a simple ball pump GBC module. LEGO GBC Ball Pump Module by dr_spock_888, on Flickr YouTube video: (no music to avoid DRM issues in some regions) Enjoy.