Search the Community
Showing results for tags 'mecanum'.
Found 3 results
-
Watch the Footage The Mecanum wheel is an omnidirectional wheel design for a land-based vehicle to move in any direction. The Mecanum Wheel is based on a tireless wheel, with a series of rubberized external rollers obliquely attached to the whole circumference of its rim. These rollers typically have an axis of rotation at 45° to the wheel plane and 45° to the axle line. When spinning generates a propelling force perpendicular to the roller axle, which can be vectored into: + a longitudinal component + a transverse component Minions use Pulse Width Modulation technology to adjust the speed of their vehicles. Minions change the running direction of each wheel or motor with H-bridge technology and control the movement of their vehicles by combining different wheel directions. Camellia Mini could control all motors synchronously, which keeps 4 Mecanum wheels changing direction or speed simultaneously, thus making the vehicle perform perfect omnidirectional running. www.camellia.xin Copyright © Camellia Café 2016-2021 Camellia Café and its LOGO are registered trademarks. -
I got my hands on some mecanum wheels that are compatible with Technic axles, although it's a tight fit. It might be interesting for those who are playing with robotic sets from Lego. The advantage over building those from Lego parts on your own should be that they are smaller and the rollers have curvature for smoother ride/more traction. I bought those on my local marketplace for ~12.99 USD a set including shipping, but there's no manufacturer packaging, only info is 48MM-K on the wheel body. Those seem to be available on aliexpress. If you don't know what those are about, here's a good explanation: My video is just a test of the wheels themselves to see if they work as the initial feel of the rollers is that they may slide, but once there is some weight put on the chassis, they have proper traction. It would make more sense to have them spread further apart like in the example forklift in explanation video and have precise control over each wheel, so four motors + powered up hub makes more sense than what I did there taking those for a first spin. -
For this competition I wanted to build the most advanced bot, packed full of features: - Mecanum wheels, they allow the bot to go in ANY direction, even sideways. Each wheel is powered by 2 M motors, therebye totaling at 8 M motors for drive, combined with a flippable design which allows the bot to drive upside down - Liftable spikes to raise the opponent and siable them in the front, powered by 2 L motors and at the sides, powered by 2 M motors - The rear has a very fast spinning weapon, which tops at some 4000 rpm, powered by an RC motor - to top it all off the whole rear spinning weapon is on an arm which can pivot upward, therebye delivering a powerfull blow. For that action I used 4 XL motors. - And finally some corner rubber guards make it very hard for this bot to be picked up and dragged: Squeezing 17 motors, 2 Sbricks and 2 battery boxes in a robot of less than 8 studs tall and 45 x 45 studs wide and long was a challenge, but in the end I succeded. Because it looks like a rather squarish looking pancakge I decided to simply call it that - square pancake. Specifications: - Powered by 10M, 2L, 4XL and 1 RC motor for a total of 17 motors - Controlled by 2 sbricks - 45 x 45 x 8 studs large - weight is around 2,5 kg Here's spikes and the weapon are suppose to work in together to disable and smack the brick ouf of the opponent: To control the robot I made a custom Sbrick profile for my phone. Controlling all the motors and ways of movements can be quite a challenge And here is the nightmare of cables, motors, gears and bricks which hides under the armor: Please enjoy the video showcasing all the functions: In the end I know this may not be the toughest or nicest looking battlebot, but I think it compensates with a very large amount of unsual features and techniques. Building this model was very fun, among other things it inspired me to continue developing my mecanum wheels for future models. A big thanks to everyone for inspiring me
