Scratch (Word Blocks) program to accurately turn with LEGO Education SPIKE Prime

In this program we demonstrate how to use the built-in motion sensor of the SPIKE brick to program the robot to turn 90 degrees. Due to the chance of overshooting the targeted angle, the robot is programmed to stop turning if it reaches or goes above 90 degrees. Since the robot, this program was made for, is a little tilted, the angle it is programmed to turn to is changed a little to compensate for the tilt.

This program was intended for and tested on the Gazon robot

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10 Aug 2022

Courses and lessons with this Program

This Program is used in the following courses and lessons

LEGO Education SPIKE Prime Programming for competition with Word Blocks

To successfully advance at competitions we need to understand two concepts - how to reliably and consistently navigate the field and position the robot exactly where we need it to be on every run, and how to build attachments that would accomplish a mission model once we have reached it. This course is focused on the first part. The second part is the whole FLLCasts platform, but start at FIRST LEGO League with LEGO Education SPIKE Prime. "Challenge" competition for 9-16 years old

The goal of this course is the help you learn to program LEGO Education SPIKE Prime robots to behave consistently and reliably during competitions. As a language we use LEGO Education SPIKE App Word Blocks which is based on Scratch. We look at a lot of concepts that could be used for FIRST LEGO League and World Robot Olympiad competitions - eg how to follow a line fast, slow, in a smooth way, with 5 states. Also how to align to lines, how to do double alignment, how to keep a straight line with motion sensor.

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Motion sensor - basic turn

In this video tutorial we demonstrate the use of the motion sensor and how it could be use to turn precisely to 90 degrees. We demonstrate some of the caveats of the sensor and how sometimes it does not work as expected. Like you set the robot to turn until the sensors detects 90 degrees and at the end the robot is not at exactly 90 degrees.