With the shape of a box it is very easy to align this robot to different wall and to add very stable pinless attachments to it. The goal of the video is to discuss this feature of this particular robot construction.
In this video we look at the way this robot uses the LEGO Mindstorms EV3 motors. How are they attached and the what the rotation of the motor is transferred to the attachments.
In this episode we look at the way this robot is balanced. A well-balanced robot could handle heavier attachments without losing track of its position on the robotics competition field.
Sometimes robot builders are so overwhelmed with the process of constructing a robot that they forget two very important parts. The brick should be accessible and the cables should not get in the way. These are referred by us as Brick Accessibility and Cable Management.
This video discusses the fact the robot requires a few more parts that are available in the LEGO Mindstorms EV3 robotics sets. We have a number of other constructions that require less parts, but for this particular robot construction we have decided to go beyond the standard sets, cheaply buy a few more parts and build a whole box robot with them.
The first part of a box robot chassis for robotics competitions. The robot is quite large and this is why we split it into two parts - to make it easier to construct it. This is the second part.
The robot is built with LEGO Mindstorms EV3, with an additional part for the walls used in the second part.
It's a box! It's a robot! It's a box robot. Box robots are very popular on different robotics competitions involving LEGO Mindstorms like the FIRST LEGO League or World Robotics Olympiad. Let's start with a brief introduction and continue in the next videos with explanation on the features of the robot and why such robots are frequently used.
As we are already off the season we decided to look back at the competition. First, we will take a look at the working solution for FIRST LEGO League 2017 Manhole Cover. This was generally accepted as one of the most difficult missions during the competition. We've built a single attachment to accomplish it.
(we are releasing the video without explanations and will add the explanations later)
A space telescope is astonishing, but it can’t beat the accessibility and simplicity of a college or science museum observatory – that is, if you know how and where to point it.
Rotate the observatory to a precise direction.
(mission descriptions source https://www.first-lego-league.org/)
Solar panels in space are a great source of energy for a space station in the inner solar system, but since things in space are always moving, aiming the panels takes some thought.
Solar panels need to be angled toward or away from you, depending on strategy and conditions.
Both solar panels are angled toward the same field: 22 (for both teams)
Your solar panel is angled toward the other team’s field: 18
Possible scores: 0, 18, 22, 40 as shown below and seen from above your north border, facing north.
“Your” solar panel is the one on your west end of the table.
(mission descriptions source https://www.first-lego-league.org/)
It is amazingly expensive to send heavy stuff like construction material into space, so scientists and engineers are instead learning how to print what they need in space, using available extraterrestrial elements.
The robot needs to get a regolith core sample and place it into the 3D printer, which will cause the 2 × 4 brick to pop out. The ejected 2 × 4 brick can then be delivered elsewhere for more points.
(mission descriptions source: https://www.first-lego-league.org/)
For rovers in other worlds, getting stuck is definitely not okay! Teams of rovers can help each other, but a lone rover needs to be very careful.
(mission descriptions source: https://www.first-lego-league.org/)
To live away from earth, it would help if we were good at detecting and mining resources under the surfaces of other planets, moons, asteroids, and even comets.
The robot needs to get all the core samples out of the core site model, then it has options for what to do with them as described here, and in mission M03.
(mission descriptions source: https://www.first-lego-league.org/)
Gardening is easy, right? You just need a truckload of rich soil, some rain, sun, fertilizer, helpful bugs, CO2 and a rake but what if you were orbiting Neptune, in a room the size of a minivan?
Move the push bar the right distance at the right speed, to get into the green scoring range.
(mission descriptions source: https://www.first-lego-league.org/)
Incredible engineering accomplishments like space travel come about in steps. And many huge, progressive sub-goals need to be met before we can forever leave earth and live to tell about it!
The robot needs to send payload rockets (carts) rolling down the space travel ramp. The first cart is preset and ready to go, but the robot needs to load the other two from the base.
(mission descriptions source https://www.first-lego-league.org/)
Space stations allow us to learn about and even practice living in space, but improved technology and new international partners require modules to be easily interchangeable.
The robot needs to remove and insert modules among the habitation hub’s portholes.
(mission descriptions source https://www.first-lego-league.org/)
Space is quiet and beautiful, but with almost no heat, air, nor air pressure, it could freeze, suffocate, and boil you all at once! Help our spacewalking astronaut “Gerhard” get to safety.
The robot needs to get Gerhard’s body into the airlock chamber.
Scoring Requirements
(mission descriptions source https://www.first-lego-league.org/)
Though spacecraft travel crazy-fast, even the shortest trips involve a lot of time for the traveller’s body away from labour and recreation, which is bad for the heart and lungs.
Mission
The robot needs to repeatedly move one or both of the exercise machine’s handle assemblies to make the pointer advance.
Scores
Soon after a launch, rocket engines often separate away from spacecraft by design, but that’s long before the spacecraft leaves the pull of gravity. So why doesn’t the spacecraft fall back to earth?
The robot needs to impact the strike pad hard enough to keep the spacecraft from dropping back down.
Scoring Requirements
(mission descriptions source https://www.first-lego-league.org/)
If a satellite doesn’t have the correct velocity and distance from earth, it can fall, drift away, fail to function or get destroyed by debris. Propulsive adjustments need to be performed with precision.
The robot needs to move one or more satellites to the outer orbit.
(mission descriptions source https://www.first-lego-league.org/)
The chance of a “serious” meteoroid hitting earth in our lifetime is extremely low, but it’s not zero, and the devastation could truly wipe us out. How will scientists and engineers keep us safe?
Mission
From west of the free-line, send one or both meteoroids independently to the meteoroid catcher. “Independently”: see also M01, Section “Scoring Requirements”.
Scoring Requirements
(mission descriptions source https://www.first-lego-league.org/)