Product Idea |

Mindstorm EV3 Robotic Quadroped

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Structural Changes

This new design is a lot stronger. The width and length was increased, while taking the brick count from 1018 to 873.

The legs needed better support.

Finally the foot needed a wider area for anything outdoors.


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Better Foot design

This is the original design for the feet of the robot. The dampers can get pulled off if they get stuck on something and  if they go down on uneven terrain they don't adjust enough.

This will solve both issues. I used two dampers pointing in-between the angled pieces to act as springs to keep the foot straight but put it on uneven terrain and it adjust up to 45 degrees. I used the rubber attachment for the track element as the contact for the ground. I built this and tested it. It springs back really quickly and is stiff enough. The rubber attachment for the track element is stronger, and I believe has the wright grip to the ground not to sticky not to slick. The swivel of the foot is just enough to allow for terrain but not to flip the foot over(Pics Below).


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Walking Images

I Created a really simple mockup of a possible walk or movment type keep in mind this is probably the simplest type of movement but it is the most stable and reliable. Keep in mind the mockup is very simple.

 

 


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Needed Changes after partial assembly

I was working with a partially assembled Model and realized that Some of this design would not work that well.

I Added this bracket(the black one Pic below) on the front and back because the body hase too much give. After they were added the problem was gone.

I raised the position of the two EV3 Intelligent Bricks. This was needed Because the ports for the top Intelligent brick were blocked off. You can see that in the above picture. I added some outer pieces on the Intelligent bricks to ensure they aren't damaged, and it looked cool.

Before

after

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