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Found 178 results

  1. Currently I am trying to build a pneumatic GBC module based on the videos of and .Somehow I keep having issues with a full 180 degrees turn. When not attached to the base, the turntable turns a full 180 degrees (like in the final part of Akiyuky his video). Once attached to the base my grabber does not turn fully, but only about 150-160 degrees. This way my version will not grab new balls but crash horribly due to not being aligned properly. Somehow the pneumatic piston does not push the turntable enough when fully extended. The only way it works ‘properly’ is when I operate the pneumatic pump as a madman so the swing speed turns the grabber fully but it should not have to operate on insane speed as shown in both linked videos. It might be that the module is not properly balanced but I copied most from Akiyuky and analyzed Michael Speelgoeds’ one too and they seem to work fine, although I must admit that the use of all the black pieces make it hard to see every detail so I might have missed something. Another reason might be the friction between the gear rack 1x13 and the outside of the module. As shown in the LDD file I made, there is a lot of free space between the gear rack and the outside of the module (all marked lime green) so I originally had a half bush on the lime green peg with cross axle closest to the grabbing arm so the gear rack would not ‘jump’ over the 16 tooth gear. LDD does not accept a half bush, due to not having enough free space which made me think maybe it gave too much friction. I removed it and pressed the lever 3M tight against the gear rack, but it does not stick so after a while the rack starts to slip on the 16 tooth gear. More importantly the grabber still will not turn a full 180 degrees. I am currently at a complete loss on what I can try next and was hoping someone had some pointers.
  2. 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!
  3. One for the structural engineers out there... I am building a structure to support my latest GBC module. I have vertical supports, and a horizontal cross-member. I am using a 12-long brick to form a 6-8-10 triangle to maintain the right angle between the support and the cross-member (thank you Pythagoras!). But which is the best way to do it? In the red version (on the left), the 6 side is horizontal, and the 8 side is vertical. In the blue version, it's the other way around. Which one should I use? Or are they equivalent? Under which circumstances should I use one over the other? In this case, the brace will be under compression (holdling something up). Would the answer be any different if it was under tension (holding something down)? Thanks Owen. P.S. The forces involved are not great, so I'm certain that either one would suffice. I'm just curious about whether one is better than the other. I'd settle for which one is more asthetically pleasing.
  4. I'm proud to present that the LEGO GBC Shooter module from GBC 5 has been digitized and ready for download. I also made the building instructions available in PDF format. Here is the file if you want it: http://pv-productions.com/lego-gbc-5/
  5. Hello I finally finished working on my new GBC loop. It has 5 modules: Pneumatic Tower http://www.eurobrick...35#entry1768940 See-Saw http://www.eurobrick...54#entry1716090 Android GBC Counter (V1.5) http://www.eurobrick...43#entry1684650 Drag & Tilt http://www.eurobrick...topic=85411&hl= Marble Pump V3 (no topic) -It uses 6 M Motors (the pneumatic tower takes 2 as I don't have an XL motor) -There are 30 balls on the track. -The GBC counter app says the amount of balls per second is 1.1. Not much to add... Enjoy the video :)
  6. Hello! I finally had the time to finish building & filming my new GBC module. It uses a single switch and 2 cylinders. Because the air will always go to the cylinder which job is easier, the movment sequence works perfectly with one switch. 2 PF M motors are used to compress and change the switch's position, (2 because one PF M was too slow and I don't have an XL motor) It was very hard to build the body of the crane as the cylinders try to "escape" from turning the gears. Here's the video. Not very long as I will also show this module on my next GBC loop
  7. PV-Productions

    LEGO GBC modules Index

    I'm proud to present the up to date LEGO GBC modules index. I will continuous keep this index up to date. Also your suggestions are more than welcome. Have fun looking around! Click here to visit the LEGO GBC modules Index
  8. I'm proud to present that the LEGO GBC Pick & Place Robot module from GBC 6 has been digitized and ready for download. Also the NXT program is available on the website. Click here to download the building instructions and the NXT program. Skip to 1:33 to see the Pick and Place Robot working. Click here to support LEGO GBC 6 on LEGO Cuusoo.
  9. I'm proud to present that the LEGO GBC Pick & Place Robot module from GBC 6 has been digitized and ready for download. Also the NXT program is available on the website. Click here to download the building instructions and the NXT program. Skip to 1:33 to see the Pick and Place Robot working. Click here to support LEGO GBC 6 on LEGO Cuusoo.
  10. I found this new video by LEGO, which contains an interview with Akiyuky as well as some of his modules and a sneak peek to a new module :) It was uploaded about 30 minutes ago - I think you'll enjoy it.
  11. Hi there, Click here to download the building instructions on my website! It has been a while since my last GBC. But I have made a new one with new modules in it;) Click here to watch the video on my website with more information etc.: Here's some information about the LEGO GBC 8. To download the building instructions and watch the pictures, please visit my website: http://pv-productions.com/lego-gbc-8/ This time I used over 2000 LEGO pieces. I used 2 XL motors. One for all the modules and one for the airpump. I also used the LEGO NXT to control the LEGO GBC with your smartphone, so you can wireless turn it off and on again. You can also control the GBC with a mechanical switch. I also used the LEGO NXT for measuring data for more details. So now you can see the balls that have passed by, the average amount of balls per second and a clock to see how long the GBC is running. The mechanisms and functions, which I used, do not all have names. So I named them again by function. 1. Stop-go mechanism 1: Stops balls and let them go by at the right time. 2. Sinusoid: Moves the balls by making a sinusoid motion. 3. Stop-go mechanism 2: Stops balls and let them go by at the right time. 4. Elevator: Lifts the balls to a higher level. Every time 3 balls can fit in the cabin. 5. Bridge: Leads the balls of yellow tower to the blue tower. When the elevator(4.) is down the bridge will go up and when the elevator is up the bridge is down. 6. Stop-go mechanism 3: Stops balls and let them go by at the right time. 7. Vertical pushers: Pushes the balls in a vertical way up. 8. Color sensor: takes measurements of the balls. 9. Ball pump: Pumps every time one ball. A new ball takes a place beneath another ball and then pushes them up. 10. Android app: Controls the LEGO GBC Website: http://pv-productions.com/ Facebook: https://www.facebook...206638589482664 Youtube: http://www.youtube.c...op?feature=mhee Support site: http://lego.cuusoo.c...deas/view/51642
  12. Hi everybody, here is my new GBC module, using a particular "In basket" following and improving an idea of Platystick (a Techlug member) : the balls fall out of the basket by its side, no possibility of locking. The six-arms wheel system is already known for a long time. The chassis is optimized, the mechanics very simple : M-motor, 16t-20t, and on the one hand, worm gear-8t for the in-basket, on the other hand worm gear-24t for the 6-arms wheel. The module can be used in a classic GBC circuit just moving a flex axle (the same as the four on the 8285 front racks), then the balls are redirected to the end of the module using the ramp which isn't usend in the video :)
  13. Hi there, I previously posted the LEGO GBC 8 but now, after a week, the supportpage of the project is finally published. So, support the project if you want. Thanks. Click here to download the building instructions on my website! Click here to watch the video on my website with more information about mechanisms, programms, buildinginstructions, music I used, etc etc : Here's some information about the LEGO GBC 8. To download the building instructions and watch the pictures, please visit my website: http://pv-productions.com/lego-gbc-8/ Bron: Geek.com This is not GBC builder Philip Verbeek’s first outing with the concept — he’s on his 8th GBC build. Some of the past ones have included ball launchers, ramps, elevators, grabbing claws, and more. This time Verbeek has gone for a very ambitious build consisting of elevators, moving ramps, and a crazy undulating bridge. He’s also incorporated Lego NXT that allows him to track data about system performance and control the whole thing with an Android app. This new GBC consists of about 2,000 pieces, which is fewer than some previous builds. The contraption is powered by 2 XL Legomotors — one for all the modules, and one for the airpump. The mechanical energy from the motor is transmitted to most of the modules via gears or a network of strings woven through the blocks. Possibly the coolest aspect of this GBC is the Sinusoid ramp at the beginning. Watching it undulate while suspended by a network of strings its kind of mind boggling. It must have taken a good long time to get it timed correctly. Verbeek has also been kind enough to give us a walkthrough of the design. You can follow along with the gallery above to see each module up close. Stop-go mechanism 1: Stops balls and let them go by at the right time. Sinusoid: Moves the balls by making a sinusoid motion. Stop-go mechanism 2: Stops balls and let them go by at the right time. Elevator: Lifts the balls to a higher level. Every time 3 balls can fit in the cabin. Bridge: Leads the balls of yellow tower to the blue tower. When the elevator is down the bridge will go up and when the elevator is up the bridge is down. Stop-go mechanism 3: Stops balls and let them go by at the right time. Vertical pushers: Pushes the balls in a vertical way up. Color sensor: takes measurements of the balls. Ball pump: Pumps every time one ball. A new ball takes a place beneath another ball and then pushes them up. Android app: Controls the LEGO GBC. If you think you have the time and patience to assemble your own GBC with near-clockwork precision, Verbeek has made the plans available to download. It’s also on Lego’s Cuusoo page, if you think it’s worth supporting. Maybe Lego will finally make one of the GBCs a reality? You can also track Verbeek’s projects on Facebook and his YouTube channel. Website: http://pv-productions.com/ Facebook: https://www.facebook...206638589482664 Youtube: http://www.youtube.c...op?feature=mhee Support site: http://lego.cuusoo.c...deas/view/51642
  14. Great Ball Contraption (GBC) - Index This first post will be used to maintain an Index of GBCs here on Eurobricks or other websites. Eurobricks topics GBC General Discussion LEGO GBC 8 + Building Instructions (5 modules - 2 motors)
  15. LegoGBC

    [GBC] See-Saw

    Hello! This is my new GBC module,named See-Saw. It uses one M motor to move the swing (using a crank). The ball input has 2 barriers which are opposed to each other (when one is up,the other is down),so only 2 balls can enter the swing at once. That's it,I think that seeing a GBC module is more fun than reading about it,so here's the video - Thanks for watching!
  16. 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.
  17. PV-Productions

    PV-Productions©

    Hi everyone, Of all the things made with Lego, my favorites are inevitably the Great Ball Contraptions. GBCs, as they are known for short, are Rube Goldberg-style machines designed with the sole purpose of moving tiny balls through a circuit. The GBC is an elegant ballet of Lego, and the ultimate contruction feat of these balls as well as their robotic NXT counterparts. The mechanisms that move the balls through the loop are generally as complex as possible, using clever actions that are reminiscent of the workings of a factory right out of How It’s Made. I think, the Great Ball Contraption is just about the greatest feat of Lego engineering that there is. So I mostly make LEGO GBCs with in particular GBC-plans with more modules mixed in one big great ball contraption. I only publish the final videos on youtube. So subscribe if you don't want to miss anything. For interim updates you must visit my facebookpage or my website. So make sure to check them out as well! If you like what you seeing, please support the CUUSOO-projects (links are below), like my facebookpage and subscribe to my channel. My latest projects: LEGO GBC 5: LEGO GBC 6: LEGO GBC 7: Contact: Website: http://pv-productions.com/ Facebook: https://www.facebook...206638589482664 Youtube: http://www.youtube.c...op?feature=mhee Support site: http://lego.cuusoo.c...deas/view/43300 NOTE: I usually publish a video once a months or even longer. Keep in mind: quality costs time and I do not have always time;)
  18. After the success of my previous GBC Counter module, I decided to upgrade the app and also release it to the public along with a detailed tutorial for building your own GBC counter. How it works explained here: http://www.eurobricks.com/forum/index.php?showtopic=83844 The app & module support the GBC standard of 1 bps. New features: -Balls per second display -The new app & module can handel more bps than the first version -GBC timer -Better design Tutorial download (includes a PDF file, LDD file and the app itself) http://www.mediafire.com/download/wmfxy3ny1rbdrtc/GBC_Counter_Tutorial.rar The video: Thanks for watching!
  19. I am afol and I own a few lego sets, and I am very interested in starting GBC bulds but I dont really know where to start. Any help would be nice. What sets to buy to get started with GBC builds? where to get the basket and football balls? where to get the gears? where to get the power? Web sites etc. Thanks in Advance DS
  20. Greetings. I made a few GBC modules. A conveyor belt, ball accelerator and jig saw. GBC Modules by dr_spock_888, on Flickr
  21. Hi! I made a new GBC module. This one wasn't aimed to be complex or very clever - It was aimed to be simple and easy to operate. I built it because many people on youtube asked me for a simple,not motorized GBC module,and only uses common Lego pieces. It's very fun to operate as you only need to press a button and the ball elevates,unlike previous marble pumps which were hard to operate by hand. I think that the video & description provide enough info...so...here's the video (there is also a LDD file in the description)
  22. Hello! I had this idea of making a ball counter for a long time,however,I don't own an NXT and neither have enough pieces (and the knowledge) to build a mechanical one (like Nico71's) So after some work I came out with this - I've built an app for my Nexus 4,which uses the phone's built in proximity sensor to detect proximity change. The app then adds one to the ball counter,and waits 700ms before measuring again (because of the lever sometimes jumping a little after it moves) The first prototype was a rail going in front of the proximity sensor,so every time a ball crosses it will block it. This,however,wasn't reliable at all because of the sensor's low refresh rate. So I built what you see in the video - now,a ball goes up in a threads lift,moving a lever which then blocks the proximity sensor. It's 100% accurate. Here's the video,thanks for watching!
  23. Hello! I completed my 3rd GBC layout. It has 4 modules: Accelerator,Mini Ferris Wheel, Up & Scissors lift It required all the pieces I have (and some improvising,like the long axle used in the Accelerator module because its motor's cable didn't make it to the battery) Anyway...Here's the video: Thanks for watching
  24. Here is my latest GBC module! It was inspired by . It was rather simple to build, but the turning mechanism took me awhile to figure out.Here is a short video I made: I am almost finished with my GBC layout, so be looking for a post about it soon! I just noticed I accidentally spelled "Mechanical" wrong in the title, sorry.
  25. My very own GBC module It uses a single M Motor to elevate (and lower) the platform. There is a small 'gate' on the platform blocking the balls from falling until the platform reaches its highest point. There is another gate on the ball input to make sure the balls dont fall to the ground,only to the platform. The platform can carry about 5 balls at once. Here is the video Thanks for watching