Common problems with motors not working
We will cover the typical reasons why your robot is not moving at all.
- #2003
- 01 Jul 2022
We will cover the typical reasons why your robot is not moving at all.
This is the most basic line-following method, commonly known as the "ducky" line-following method.
There are many cases in programming where you want something to repeat indefinitely. Here's how to achieve that!
The main difference between this field and the easier one is the addition of crossroads. Crossroads introduce a new level of difficulty that can be overcome by programming the robot to remember the paths it has taken, although there are simpler and more elegant solutions.
For this challenge, it is assumed that the field layout is unknown before the competition, making it impossible to hardcode a specific sequence of turns.

This video tutorial demonstrates how the MiniBox accomplishes four missions - M06, M07, M14, and M15 - of the FIRST LEGO League 2023-2024 MASTERPIECE Challenge robotics competition.
It may seem challenging to achieve all of this in a single run, but with careful planning and solid programming, success is within reach! The robot is a LEGO Education SPIKE Prime box robot, equipped with rubber bands and various mechanisms. Since this is our final run, we can leave the robot on the mat, saving some time. Let's dive in!
In this video tutorial we demonstrate how to accomplish M09 of FIRST LEGO League 2023-2024 MASTERPIECE Challenge. The robot is Chain Monster - a LEGO Education SPIKE Prime robot. It pulls the mission model and precisely positions it in the designated area. An interesting aspect is that the robot must rotate to position the loop correctly, so pay close attention when programming it.
This video tutorial focuses on accomplishing M06 Raise the Mast and M07 Kraken’s Treasure of the FIRST LEGO League 2024-2025 SUBMERGED Challenge using the Nautiq box robot (a LEGO Education SPIKE Prime robot). The run uses a pinless attachment connected to the bottom of the robot, featuring side guides with stoppers for precise mast lifting and a central rubberized section to catch the treasure chest.
The challenge in this run is to collect the treasure before raising the mast fully, as the mission model locks the chest if the mast is lifted too far too soon. The robot must push and lift with great precision, stopping at exactly the right point to avoid triggering the lock, then continue raising the mast to complete the mission. This sequence demonstrates careful mechanical design, accurate programming, and precise timing to accomplish two interconnected missions in one smooth run.
This video tutorial focuses on accomplishing M15 Research Vessel of the FIRST LEGO League 2024-2025 SUBMERGED Challenge using the Nautiq box robot. In this series of test runs, the goal is to achieve 10 out of 10 successful deliveries, with the robot pushing the loaded ship to its destination, releasing it cleanly, and moving to the other launch area without a single failed attempt.
The run uses a pinless attachment with a locking mechanism and friction pins to secure the cargo during movement and allow smooth release upon arrival. The precise programming and stable design ensure consistent performance across the trials.
This video tutorial focuses on accomplishing M11 Sonar Discovery and M12 Feed the Whale of the FIRST LEGO League 2024-2025 SUBMERGED Challenge using the Nautiq box robot. The goal is to achieve 10 out of 10 successful completions, with the robot reliably rotating the sonar and feeding the whale in every trial.
The run uses a combined two-part attachment where the front section opens the whale’s mouth and drops the krill while the rear section uses a chain and hook mechanism to rotate the sonar. The programming ensures precise timing, correct hook positioning, and a small forward adjustment to avoid snagging, enabling consistent results across all attempts.