# Omni vs mecanum wheels for drawing robot

I'm designing a mobile robot which will have to draw some lines (straight and/or curly) on the floor while it moves. The floor will always be flat with almost no obstacles. The robot will have four wheels and its speed won't exceed 0.8 m/s.

I would like to receive some suggestions about the wheels: is it better to use omni or mecanum wheels in this case? I know that both wheels have advantages and disadvantages (i.e., mecanum wheels require more torque when you move sideways), but which one is suitable for this project?

Should I use a X-shape with the omniwheels to improve the accuracy while drawing the lines? Or the mecanum wheels in a tank configuration will be more suitable?

Thank you!

• what does this mean? ... almost no obstacles – jsotola Mar 13 at 20:24
• I mean that it is possible to assume that there are no obstacles on the robot's path since they are very small and tiny and they do not affect the robot's behavior. – Marcus Barnet Mar 13 at 23:12