Building Instructions

This attachment is designed for the Smaller Pancake - SPIKE Prime Box Robot and is used to complete Mission 05: Who Lived Here?, Mission 06: Forge, and Mission 07: Heavy Lifting in the FIRST LEGO League 2025-2026 UNEARTHED competition. The attachment positions the robot accurately in front of the mission models and interacts with each mechanism in sequence. In one run, it presses the Forge lever to release the stones, activates the Who Lived Here? model, and pushes a stone into the Right base. In a separate run, it pushes or captures the Millstone and transports it to the Right base.

This WRO robot is designed to collect a lot of ping pong balls in its container. It's built with LEGO Mindstorms EV3 45544 and 45560 sets. These are the LEGO Educational sets. The robot has two chains that collect the balls and push them into the container attachment. This is one of the larges robots we've uploaded at FLLCasts yet. You could learn a lot by following the building instructions and paying attention to the details of how this robot is built. All the alignment, all the connections. Really beautiful.  

If you take a look at the videos for this attachment you will see a nice idea on taking the track and the ambulance. These two vehicles from the FIRST LEGO League 2013 competition had to be collected and returned back to base.

Built from LEGO Mindstorms EV3 parts. 

Building instructions for a LEGO Mindstorms EV3 Truck Robot Attachment for the FIRST LEGO League 2013 Nature's Fury robotics competition

This attachment presents a way to mechanically align the robot to a mission model and solves the Cloud mission from FLL 2014. 

Building instructions for the gear attachment. 

Building instructions for the LEGO Mindstorms attachment using Rubber Bands

Building instructions for this LEGO Mindstorms EV3 attachment for the FIRST LEGO League Nature's Fury robotics competition

Building instructions for the Pinless Rubber Band Attachment:

These are building instructions for one of the greatest LEGO Mindstorms attachments that we've built. Super simple and easy to follow and at the end, you have an attachment with a rubber band that controls a lever and that could lift objects from the field. It could lift them up. Also because it is with a rubber band you don't need a motor and you could use the motor for other attachments. 

Building instructions for a LEGO Mindstorms EV3 Active attachment for changing gear orientations

Building instructions for the Rubber Band Attachment

Attachment part of a series of robot attachments for accomplishing the FIRST LEGO League 2013 competition. This specific construction lifts the two vehicles. It uses rubber bands for locking the levers. Take a look at the video tutorials for details explanation on how it works.

Build from LEGO Mindstorms EV3 parts.

A similar LEGO attachment the previous once, but this one is with a different gear ratio. Again using a frame, two axles and two gears you can change the direction of the motion.  

Another example for a quick pinless attachment build with LEGO Mindstorms EV3 robots.