This bridge can be raised and lowered to allow transport on both the river and the road. Lower the bridge decks to prepare for the trucks to pass.
- #1809
- 27 Sep 2021
- FIRST LEGO League, FIRST LEGO League 2021-2022 Cargo Connect, Mission Models, FLL, FLL 2021, Tips and Tricks
Score
If the bridge deck(s) have been lowered and rest on their center support: 10 each
Number of bridges lowered and resting on their center support:
- If none of the bridge decks has been lowered: 0
- If one bridge deck has been lowered and rests on the center support: 10
- If both bridge decks have been lowered and rest on the center support: 20
FLLCasts tip
This is a mission that can easily be accomplished in many ways. One way is to use a beam with elastic connection on one side of the robot. The robot moves straight to close the first bascule of the bridge. Then the robot passes on the other bascule of the bridge, twisting the beam. When the beam passes the bascule, it will return to its initial position. The robot then goes back and closes the bascule.
Another way is to have a long static beam protruding in front of the robot. First, the robot moves to the outer side of the bridge, reaching one of the open bascules. Second, while turning in place, it closes the bascule and continues to the other bascule. Third, the robot reaches the outer side of the open bascule, turns in place and closes it down.
The last option is to use a motor-powered attachment with two gears and two axles attached to the gears. When the attachment motor rotates, the two axles come together in front of the robot closing both bascules at the same time.
Курсове и занятия включващи този Урок
Този Урок е използван в следните курсове и занятия.

FIRST LEGO League 2021-2022 Cargo Connect solutions and review with LEGO Education SPIKE Prime
In this course, we demonstrate and explain example solutions for the FIRST LEGO League 2021-2022 Cargo Connect competition. Just like every year, we share solutions only after the season is over. In this course, you will find examples and principles of building attachments and will learn how to program consistent and reliable robots for each mission. You can follow the course, and as you go through each mission, try to replicate the solutions to understand the programs and explanations. Upon completion of the course, you will have many new ideas about how to approach the missions in every FLL robotics competition and how to help your team score more points.
Before starting this course, we suggest you go through the FIRST LEGO League robot game guide
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M14. Push to connect - The Bridge
In this video tutorial, we accomplish a FIRST LEGO League mission called The Bridge. We demonstrate how to use a really simple active attachment where the goal of the mission is to push down both parts of the bridge. We do not enter into the programming and we leave it up to you as an exercise.
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