FLL 2024: Rules for M01 Coral Nursery FIRST LEGO League 2024-2025 SUBMERGED Challenge

Video rules

YouTube video for M01 Coral Nursery

Score

• If the coral tree is hanging on the coral tree support: 20
• Bonus: And the bottom of the coral tree is in its holder: 10 ADDED
• If the coral buds are flipped up: 20

Rules

FLLCasts Tip

This mission has two parts: The coral tree needs to be hung on the support, and the coral buds need to be flipped up. Remember that this mission has No Equipment Constraint!

For maximum points in the first part, your robot needs to both hang the coral tree on the support and ensure the tree is in the holder. To achieve this, your robot needs to be very precise, as you have only around one LEGO unit to work with vertically. Thankfully, the mission is right next to the red base. For the fastest and most accurate attachment, you can design a passive mechanism that rises when it collides with the base of the mission and hooks the tree. For a simpler approach, you can use a motorized attachment that lifts the coral tree while combining it with the forward movement of the robot.

The coral buds need to be pushed down and toward the model in order to rotate them. A simple push will not suffice because the model is designed in a way that a straightforward push toward it will create force directed at the floor, preventing the model from moving. For this reason, the robot needs to push the lever down and then forward. This can be achieved with a passive attachment that starts with a sloped surface to push down the lever, followed by a vertical wall to push it forward.

Alternatively, you can carefully lift and move the coral buds directly without touching the lever.