The_Icestorm Posted May 10, 2017 (edited) 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! Edited May 10, 2017 by The_Icestorm Share this post Link to post Share on other sites
Burko-uk Posted May 10, 2017 For such a high CoG that's amazingly stable! Love it. Share this post Link to post Share on other sites
