Ad: Thanks to Odoo for sponsoring this video, try Odoo for free now https://www.odoo.com/r/JtZDo you remember when I made a bicycle with an omni-wheel on the...
It's easy to get those wheels for small robotics projects too. They're a lot of fun to play with. I've made a few little vehicles with them. The microcontroller programming is a little tricky. I'm still tweaking the steering and transposition code on the newest one.
Wikipedia covers it pretty well: https://en.m.wikipedia.org/wiki/Mecanum_wheel
It's easy to get those wheels for small robotics projects too. They're a lot of fun to play with. I've made a few little vehicles with them. The microcontroller programming is a little tricky. I'm still tweaking the steering and transposition code on the newest one.
They're also used for some large robotics projects, and I'm pretty sure I saw a video where they were being used on a forklift.