Search the Community
Showing results for tags 'walkers'.
Found 3 results
-
Hello, this is my first proper thread so forgive me if it’s a little amateurish in layout. With that said i’d like to begin by saying i’ve been working on this project on and off for a few years to get my 75054 AT-AT walking, having tried out the mechanism for the official LEGO walking AT-AT i’ve found that it is not stable enough nor satisfying. Since then I have been through multiple iterations of trying to get each leg moving but with only one off the ground at a time. As you can see in the pic from DK’s StarWars Vehicles book the mechanism for connecting and moving the lower leg relative to the upper leg seems to be similarly joined enough that it can be replicated using a linkage but making those linkages move in the correct sequence is the difficult part. The ankle on an AT-AT keeps three legs at a time level in the ground as well as lifts one other leg by moving it up when it takes a step. I have only ever found one person who has managed this in a non LEGO model so it’s possible: https://www.youtube.com/watch?time_continue=3&v=34tgu7ULkeM&embeds_referring_euri=https%3A%2F%2Fwww.google.co.uk%2F&source_ve_path=Mjg2NjY&feature=emb_logo That was 15 years ago. Here are some of my attempts: These two images use two sets of half beams to raise, lower and flatten the beams holding the leg, allowing up down movement, connected to the lower half beams are some linkages to move the leg back and forth, the fault of this one is it was not smooth nor stable. front Back (blue and red beams provide strength) This mechanism uses clutch gears going in a forward direction to move the bars down, half beams make them move up and down in turn, this reduced vertical space taken up, the failure of this is lack of connection points and strength as well as clutch gears probably not being able to support the weight. This was the most promising one, strong too but was unfortunately not quite walking in the right motion, it was not fully stable either. From further study I have noticed that the legs only bend in one direction so i’ve placed a stopper on each one to mimic this, I imagine this will add to the challenge. But i’ve seen people on eurobricks work magic with technic so I figured I should ask here for some help to find a solution. -
[EV3] Mindstorms Star Wars AT-AT
The_Icestorm posted a topic in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Standing 58cm tall and 59cm long, this AT-AT from Star Wars is probably my largest robot to date. It is controlled by an EV3 p-brick, and is capable of walking, turning its neck, and shooting balls from a twin-ball launcher located inside its head. Here is a list of the functions of the robot: - Walking: 2 EV3 large motors - Neck turning: 1 EV3 medium motor - Shooting: 1 NXT motor Also includes an EV3 IR sensor for use with the EV3 IR remote. After getting the BWE, I had a plentiful supply of grey beams and panels, which I used in the aesthetics of the model. The head design was the most tricky part of the build. I needed it to look good, while at the same time have enough space for the twin-ball shooter with magazines. However, I'm happy with the end result, as it looks quite accurate to the actual thing. With the amount of pieces I had, I was also able to achieve a (almost) full body cover, which although adds to the weight of the robot, looks really nice. There are also two flaps on top of the head that can be lifted up to access the ball magazines. Walking was especially tricky to achieve in this model, as it was so top heavy. Rubber bands had to be used to help pull in the legs when they bore the load of the robot, otherwise the motors would not have enough torque. All legs are controlled simultaneously by the two motors, so the robot theoretically can't turn. However, I doubt the robot could turn even if the two sides could be controlled independently, since it is so top heavy. The EV3 brick can be accessed through opening of the panels on the side of the body. This was the easiest way to access the electronics while keeping a full-body cover (The real AT-AT in the movies also had opening side body panels). Here is a video of the AT-AT walking, turning its neck, and shooting. More information about the robot can be found here: https://www.us.lego.com/en-us/mindstorms/community/robot?projectid=afba4def-3b6b-49f3-8e0f-f964224763d9 Hope you enjoyed this robot! -
Hey guys! I just now finally took pictures of it, But I would like share with you a few simple mods I made to the new AT-AT. I don't believe I have seen anyone else make mods or at least post them. This was a spectacular set for this year, but it lacked interior functionality, and that trap door was not doing it for me. So I decided to make a two story deck/platform, for which (in my case) holds up to 8 troopers. I based it off of Incredible Cross Sections interior detail.(Who doesn't anymore?) I have also modded the back portion to fit a speeder bike (or something, maybe a hot tub?), because that was useless space, and needed to be filled with something useful. Screw Structure! I also thought the walker looked a little thin in the front and back so I bulked it up to be more accurate, I understand LEGO does not have any pieces for these angles so they used the closest thing. I plan to modify the head further to fit two pilots and Veers behind them, because that cockpit so so CRAMPED. http://www.mocpages.com/moc.php/401308 Thanks for looking! let me know what you think.
