Four Mechanum wheels are mounted symmetrically on grey frame. Each wheel is driven by a separate motor, the rotation of which is programmable.
Various combination of the wheel rotations (velocities and directions) makes the car move in different directions.
In the video the car alternately:
1. goes forward
2. goes sideways
3. goes diagonally
4. rotates
A problem for this car: hard to control the rollers rotation.
For example how to brake the car? When braking the four wheels (in green), the car does not stop due to its inertia and the rollers can idly rotate. So is it necessary to brake all rollers too?
This problem also affects the direction change of a moving car.
So the car is suitable for low speed only?