Building Instructions -

• FIRST LEGO League 2020-2021 RePlay

This is a flip attachment. Arguably the flip missions are some of the most interesting on FLL competitions. The purpose of this attachment is to accomplish the FIRST LEGO League 2020 Cell Phone Mission. It contains two four gear wheels. It is an active attachment. It changes the direction with gear wheels. There is a lot one could learn from such an attachment. It is also build only from parts in the LEGO Mindstorms Robot Inventor Set.

This is part one of an FLL 2020 attachment used to accomplish the pull-up bar mission. This is the part of the attachment that stays below the robot. We put the whole robot on this attachment and we move. It is an interesting approach because as we move to the pull up bar this attachment detaches itself from the robot.

The Bench mission in FIRST LEGO League 2020 was one of the more complex missions during the competition. It involved two things - lifting part of the mission model and bringing it back to base and in the same time dropping 4 different boxes which was difficult to achieve. We came up with two solutions for SPIKE Prime and for Robot Inventor and this is the Robot Inventor solution. Take a look. You will learn how to build complex attachments doing more than one thing at a time.

These are instructions on how to build the:

• Light Tire Flip

You can find more building instructions and tips and tricks about the competition on this page.

This is a robot attachment built only with parts from LEGO Mindstorms Robot Inventor Set. The goal of the attachment is to accomplish the FIRST LEGO League 2020 RePlay mission call Treadmill. The attachment has two gear wheels that could transfer the power from the motors to the wheel. The wheel is the one that is accomplishing the mission as it rotates and rotates. The attachment is pinless.

The second part of the attachment is used to connect the robot with the pull-up bar. This attachment demonstrates a locking mechanism and can hold the weight of the whole robot while the robot is on the pull-up bar.

This is a FIRST LEGO League robot attachment for the Step Counter mission from the 2020 RePlay competition. It is a pinless attachment that is optional and could be used on the robot or we can accomplish the mission without the attachment. It is better to use the attachment as this will give us a more smooth and accurate movement of the robot.

The purpose of this attachment is to flip the tires in the FIRST LEGO League 2020 Replay competition. There are two tires on the field. The attachment must flip them and return them to their initial position. This is an extremely interesting attachment that is using friction and force in order to flip the tires.