One more example for an active attachment with a system of gear wheels. This time the system is constructed so that the attachment could lift heavy objects.
Calculate the number of rotations you have to do with the motor to rotate the final small 8 teeth driving gear wheel to 1.25 rotations?
You can collect the car for scrap or repair it. The ELM teams decide to repair it. This requires them to place the engine in the car and it's very interesting to think about this problem.
The attachment builds on previous episodes this time using two LEGO rubber bands. When a lever is released the rubber band exerts pressure on it and moves it in a circular motion. As an example we are solving the 2012 FIRST LEGO League, Senior Solutions, stove mission (which was quite interesting as a mission)
This is the attachment of Team "Nightbeast", with which they :
1. Inserts the Tube Module into the Habitation Hub port, west side
2. Move all four Core Samples so they are no longer touching the axle that held them in the Core Site Model
3. Place the Gas Core Sample completely in Base
From missions M05 and M06 from FLL Into Orbit Challenge
This attachment presents a way to mechanically align the robot to a mission model and solves the Cloud mission from FLL 2014.
Kiril Mitov's most favourite attachment. To quote him "I had a really great fun building this attachment and recording the videos for it".
It's an attachment with a Rubber band and a Flywheel and a Gear Wheel and a Worm Gear. So much knowledge in just one small attachment. The goal of the attachment is to be able to have an active attachment without actually having a motor. So you can place that attachment and it will do the work for you instead of using a motor to power it.
Build with LEGO Mindstorms EV3 set.
When placing the rubber bands check out the tutorials
Placing the white rubber band is shown at https://www.fllcasts.com/tutorials/105-rubber-band-attachment-with-a-flywheel-solving-fll-2014-search-engine-part-2 at around 05:40.
Placing the red rubber band is shown at https://www.fllcasts.com/tutorials/104-rubber-band-attachment-with-a-flywheel-solving-fll-2014-search-engine-part-1
This robot attachment shows you how to limit the rotation of a lever. It uses two gear wheels to transfer the motion on 90 degrees.
It could be built with LEGO Mindstorms EV3 and NXT versions. Most of the time during competitions like FIRST LEGO League and World Robotics Olympiad you need a lever for just a limited motion
One attachment to rule them all...We have seen it and it works -> solving most of the competition models with only one attachment. In this video tutorial without programming we would walk you through the principles and methods of using a single attachment for most of the FIRST LEGO League competition models. One can learn alot from using as few parts as possible to solve as many missions as possible.
After the first box robot course and its enormous success, we decided to build a second box robot. This time with fewer parts and with only three motors. The EV3 set comes with one medium motor and this robot will be easier for new teams. It is also lighter and more simple. Take the course and learn the ideas that we have in mind in simplifying a robot. Use this course with students and try to experiment to make the attachments and construction even simpler.
This is a robot attachment build only from LEGO Mindstorms Robot Inventor parts and it is used to accomplish the Weight Machine mission at the FIRST LEGO League 2020 competition. It is not a completely accurate attachment but it shows a good idea on how to accomplish the mission.
This is an pinless robot attachment designed for taking loops. It's built with LEGO MINDSTORMS Robot Inventor parts and it demonstrates how to collect a loop while moving with the robot. The attachment is designed for Luly, small LEGO Education SPIKE Prime competition robot with 3D building instructions. There are other attachments that are designed for taking a loop and locking it so that it does not fall, but they are more complex. Search for 'Carabiner' at FLLCasts.com
First version of a reusable gear attachment. By following the same principle for assembling the attachments you can change the direction of the gear wheels and build powerful attachments that could accomplish missions in any direction.
LEGO Attachment user for throwing/shooting a ball. It is powered with one motor and uses the fact that the parts of the LEGO set could bend. Build and experiment with it. Many FIRST LEGO League competitions have missions that could be accomplished with attachments that throw/shoot
In this video tutorial we look at Vertical Lift Attachments. The attachment, the root and the mission model are all build from LEGO MINDSTORMS Robot Inventor 51515 set. We've found that vertical lift attachments that could lift missions models vertically could be quite useful for FIRST LEGO League competitions. This attachment is one of the more complex attachments and some say it has an "eye opening" mechanism as you can learn so much from it. It uses gear wheels and two levers connected to those gear wheels to lift a part vertically.
“Doing the same with less” can save time and space.
We start with the first mission - trying to build attachments that are small and tidy and the Gazon robot allows us to do so. With a few pictures you can see how the robot should be placed along with all the attachments
This is a 10 out of 10 video tutorial for the FIRST LEGO League 2020 RePLAY robotics competition and the Treadmill mission. We build a robot with consistent behavior that is able to achieve the mission every time
This tutorial explains the use of motion and light/color sensors to accomplish a complex mission split into three parts. It gets into detail about how we keep a straight line with the motion sensor, follow a line with the color sensors, and transition between different parts of the program by aligning and detecting lines with the sensor. The goal is to get to a reliable and consistent behavior of the robot. On top of that, it is configurable, as we've left a few parameters that could be set to configure the behavior for a specific robot, venue, lighting, battery level, and wheels friction.
This is a 10 out of 10 video tutorial demonstrating the consistency and reliability of a configurable attachment. The attachment is designed to accomplish the FIRST LEGO League 2021-2022 Cargo Connect mission model called Sorting Center. The mission model has 3 cargo objects that could be placed in a different way. The attachment is configurable and before the run we configure it for the specific way in which the mission model is set up before the start of the round.
In this video tutorial we accomplish 3 missions from the FIRST LEGO League 2022-2023 SUPER POWER robotics competition. The three missions are wind turbine, television, rechargeable battery. The robot uses a program with sensor compared to the previous way we've accomplished the missions with the same robot.
This attachment is accomplishing three missions from the FIRST LEGO League 2023-2024. It is for the Chain Monster Robot. It solve mission 11 - Light show. It partially solves mission 14 - Audience delivery.