You already know what wait for seconds does, but do you know what wait until does?

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- #2189
- 23 Jul 2024
Wait until is the sixth block in the orange Control section.
It is used in combination with a Logic block, which you place inside the wait until block. The logic block specifies what the wait until block is waiting for!
Logic blocks are mainly found in the Sensors and Operators sections.
Logic blocks can be either True or False, and the wait until block waits until their condition is True. For example, if we use the force sensor logic block, as shown in the picture above, it will be False if the sensor isn't pressed and True if the sensor is pressed. So the block above will wait until the force sensor is pressed!
Courses and lessons with this Tutorial
This Tutorial is used in the following courses and lessons

Level A2 - History and Mythology - Robotics with LEGO SPIKE Prime
This is the second level of the LEGO Robotics Curriculum for second, third, and fourth-grade students.
In this level, we will focus on History and Mythology, with each lesson covering a different aspect of the ancient world. You will learn about a new distance sensor that uses ultrasound to help a watchtower robot detect invaders. We will also introduce new concepts such as loops, degrees, and a third motor. Additionally, you will learn how robots can perform two different tasks simultaneously.
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Lesson 3 - Myth of the Labrys
Introduction
Do you know what a labyrinth is?
A labyrinth is a complex, confusing structure designed to make people lose their way in its winding pathways.
The story behind the word "Labyrinth" is fascinating and is today's topic! It originates from an ancient Greek myth about the Labrys. According to legend, King Minos of Crete had a magical double-sided battleaxe called the Labrys. To protect it, he had the architect Daedalus build a massive maze and placed the Labrys at its center. This labyrinth also imprisoned a terrifying beast called the Minotaur, a half-bull, half-man creature. After defeating Athens in a war, King Minos demanded that every nine years, seven boys and seven girls be sent to be fed to the Minotaur.
Eventually, the hero Theseus, founder of Athens, traveled to Crete to slay the beast and save the children. King Minos' daughter, Ariadne, fell in love with Theseus and gave him a golden ball of thread to help him navigate the labyrinth. With this and Daedalus' help, Theseus solved the labyrinth, slew the Minotaur, retrieved the Labrys, and escaped with the children and Ariadne.
The myth has some basis in reality. Archaeologists have found remnants of a labyrinth on Crete, and many coins from the period feature an engraved labyrinth, often with a Minotaur inside. The Labrys was also a symbol of Crete and appears on numerous archaeological finds.
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Level A2 - History and Mythology - Robotics with LEGO SPIKE Prime
This is the second level of the LEGO Robotics Curriculum for second, third, and fourth-grade students.
In this level, we will focus on History and Mythology, with each lesson covering a different aspect of the ancient world. You will learn about a new distance sensor that uses ultrasound to help a watchtower robot detect invaders. We will also introduce new concepts such as loops, degrees, and a third motor. Additionally, you will learn how robots can perform two different tasks simultaneously.
- 28
- 0:00
- 65

Lesson 6 - Exploring an Egyptian pyramid
Introduction
Have you heard of the Egyptian pyramids? What do you know about them?
Near the city of Cairo, there are three pyramids. The largest of them is the Great Pyramid of Giza. It is around 4600 years old and was built during the Old Kingdom of Egypt. It is so old that historians say we live closer to the Roman Empire than the Roman Empire was to the building of the pyramids! It was used as a tomb for Pharaoh Khufu. To preserve the body of the pharaoh, the pyramid was constructed like a labyrinth to prevent anyone from finding it. To study the pyramid, our robot will need to navigate this labyrinth.
Since the pyramid is so old and full of delicate hieroglyphs, using a force sensor to navigate is not an option, as even light touches might damage the writings. That's why we will use our new sensor: the distance sensor!
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Level B1 - Carnival - Robotics with LEGO SPIKE Prime
This is the third level of the LEGO Robotics Curriculum for students in second, third, or fourth grades.
Carnival and Amusement Park Level. Each lesson has a theme related to carnivals and amusement parks. Students learn about physics concepts of inertia, center of mass, and centrifugal force. New ways of programming the force and distance sensors are introduced. We work with new concepts: forever loop, if/then, and if/else.
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Lesson 3 - Unicycle Clown
Introduction
What is a unicycle? Have you seen one? Have you tried to ride one?
A unicycle is a vehicle similar to a bike but with one wheel! It's much harder to ride and is typically used by specialists. Some of these specialists are street performers or clowns, like our robot today.
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