LEGO Mindstorms Grabber v3
This is the third version of the LEGO Mindstorms Grabber. This time we use a LEGO EV3 Medium motor and worm gear to make the two levers move smoothly and symmetrically.
- #423
- 01 Apr 2017
This is the third version of the LEGO Mindstorms Grabber. This time we use a LEGO EV3 Medium motor and worm gear to make the two levers move smoothly and symmetrically.
This is a simple LEGO Gear System with a ration of 1:5. When the large wheel rotates 1 time the small wheel will rotate 5 times.
This is an active attachment. Active means that is is power by a motor. It's built with LEGO Education SPIKE Prime parts and it demonstrates how to build a lifting attachment for competitions in robotics like FIRST LEGO League/World Robotics Olympiad and others. Lifting is one of the most important parts when accomplishing missions at the competitions. What's interesting is that this attachment changes the orientation of rotation with it's gears. It is designed for Luly, small LEGO Education SPIKE Prime competition robot with 3D building instructions. Check the courses in which this attachment is used for more information and tutorials on how to use it.
Can you find out why the robot is called "Omusbot"?
The robot is made as a nice base for more advanced LEGO Sumo competition. It uses two motors, which are put on backwards for more traction. On the front, it has a color sensor, which detects the border line of the field. Over them, there is an ultrasonic sensor, that detects the enemy robot. Finally, on the back, the robot has a touch sensor to detect if it is being pushed.
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/)
This attachment is meant to be built on the robot Francesco 2. When the red connector for the transmission connects the two axles for the rear gear wheels, the differential locks and the motor starts evenly transferring its power to both wheels.
When the red connector for the transmission is pushed to the side, the differential unlocks and once again transfers its power to the wheel with least resistance.
You can see empty beams hovering over this attachment. They are there so you can attach a lever construction over it, to help with the locking and unlocking of the differential. Similar leaver can be seen in the robot Catapult.
These are building instruction for a working automatic catapult with a motor and a touch sensor.
This module is meant to be used in EV3 Kinesthetic and Memory Game and is attached to the base of the robot. This is the simplest module for constructing and programming. At the bottom, a channel is left for the cable to pass through.
These are building instructions for a 4x4 LEGO WeDo 2.0 vehicle
LEGO Mindstorms EV3 Robot designed for a Folk Race competition. This robot has three Ultrasonic Sensors. Follow the building instructions and at the end, you would have a very basic robot with tank treads that you could directly use.
We've built a box robot chassis that could easily be extended with attachments for FIRST Technical Challenge competition.
If you ever felt that FIRST Technical Challenge is difficult and you don't know where to start from, building this Tetrix robot is the first thing that you could do. You would have 4 motors, plenty of space for attachments and good access to the phone.
The robot is built from a Tetrix Set without additional parts. It's a winning robot in just 109 steps
We took a stab at building a box robot entirely with chains. It is difficult to find these chains. They were part of the original LEGO MINDSTORMS NXT Robots, but we had an idea. Can we power the whole box robot and all the attachments with the chains. This allows us to do a nice demonstration when and how chains could be used.
To build the robot you will need about 180 of these the chain pars - 3711a. They could be found from NXT and from some technic sets.
This robots require additional parts on top of the LEGO Education SPIKE Prime and LEGO Education SPIKE Essentials. Check out the additional parts required.
This attachment accomplishes the Into Orbit Space Walk Emergency mission from the FIRST LEGO League Into Orbit 2017-2018 competitions. The base robot is the SUV Competition Box Robot from LEGO Mindstorms EV3.
The program for this attachment is at Programs/w415dz-fll-2018-attachment-to-accomplish-the-into-orbit-space-walk-emergency-07-robot-game-missions-program.
Soon we would publish and a video of how the attachment works.
This is a LEGO Mindstorms Boxing robot. The inspiration story goes like this "One day we though - Let's play SUMO at this robotics demonstration, but let's make it more interesting. Let's play sumo with Humanoid Robots". We decided to build a boxing robot. The goal of the robot is to press the touch sensor on the other robot and it could be very fun. Perfect robot for demonstration. It is controlled by a joystick using the Bluetooth connection.
Here are the joystick and the programs for the joystick and the robots.
Building instructions for constructing a simple LEGO Model that has red, green, blue and yellow beams. This makes it perfect for operating robots through color code.
Building instructions for a LEGO Mindstorms EV3 robot where the motors are placed in an unusual manner. They are vertically placed on the sides. This robot construction base is very convenient for a quick and interesting robot on which you could build.
Instructions for building a LEGO truck. We use a medium motor for steering and a large motor for driving one of the rear wheels.
This robot is for learning at home when you have time and energy. It is like having a motorcycle on your own - you spend a lot of time working on your motorcycle, you love it, it takes care, it takes patience. This robot has 300 steps in the building instructions. We've heard a lot of parents with students telling stories how their student could build anything from LEGO on their own. This motorcycle with a cart surely would be a challenge for them. Send us pictures when they are done.
Join the course A robot a "day" keeps the questions awake where we will further discuss the motorcycles, how to build them and what tasks to accomplish with them.
"You need to step on three points to be stable". This is something you could directly see after building this marvellous, 270+ steps, extremely interesting Motorcycle with a side cart. Yes, we are proud of it. The robot is suitable for using it at home. The instructions for building it contain more than 270+ steps so it is a test for endurance, concentration, passion. The same way driving a motorcycle is.
Or you could just step into the cart, drive along and enjoy the view while someone else is building the robot. Like a sibling or a parent.
Join the course A robot a "day" keeps the questions awake where we will further discuss the motorcycles, how to build them and what tasks to accomplish with them.