Importance of the wheels and tires on the LEGO Mindstorms robot movement Pro Preview

DIfferent wheels and tires will result in different behaviour of the robot. That is actually pretty common sense. The real question is what is the influence. Would the robot make smaller deviations if it has smaller wheels or it will make larger deviations? The tires could also be quite dirty or brand new. Or the wheels could be attached in different ways.

  • #649
  • 09 Jan 2018
  • 4:36

In this video tutorial, I would like to do a few experiments and try to find out what is the influence of the wheels and tires on the robot movement. It will not be a fully scientifically backup experiment, because we will do only a few tries, but you can continue it at home or school following the same principal. 

Size of the wheels 

Generally, the smaller the wheels the more precise and predictable the robot is. But if they are very small then we have a very slow robot. So it is a matter of balance.

Dirt on the tires

We've seen this a lot. If the tire has some dirt this could greatly change the traction and from there the robot will move slightly to one side or it will stop in a strange way. The best thing that you could do is to implement a program where the behaviour does not depend on the dirt on the tires.

Attachment of the wheels

When attaching a wheel the axle should always be attached to at least two points. It should never be only on the motor, but also on a frame on one of the side.

Five Minute Bot

Building instructions for a LEGO Mindstorms EV3 Robot that we call Five Minute Bot, because it could be build in Five Minutes.