The robot detects an object. After the object is remove we want to make the LEGO robot move forward.
- #143
- 13 Oct 2015
- 2:33
Detecting
Detecting with the LEGO Mindstorms EV3 Ultrasonic Sensor that there is no object could be as usefull as detecting that there is.
The program is implemented with a number of wait blocks that wait for a specific event to happen. In this case we are waiting for detecting an object and for detecting no object.
Previous video tutorials:
English
The next program that we'll do for the ultrasonic sensor is to have my hand somewhere, initially, very close to the sensor then when I move my hand I'll have the robot to move forward. So we are waiting until we see something at a greater distance. We have very close object, we remove it and it will move forward.
What we have to do is to move the Wait block as a first block in our program. So we just move the wait block as a first block and the second change is that we are waiting but we're not waiting to see something at a distance of 4 inches but to see something that is far away, so it is at a greater distance. Initially we have my hand at a distance of about an inch and then when I remove it there will be nothing in front of the robot and the robot can move forward. So what we want to do is to again compare the distance in inches but we want the distance to be greater than 4 inches. When the distance is greater than 4 inches the robot will move forward and we'll program it move forward for 1 second.
The program is currently running my hand is very close to the robot, I move my hand and when it is at a distance more than 4 inches the robot will move forward.
If I now download because there is nothing in front of the robot will move forward.
If my hand is in front of the robot, download, I remove my hand and it moves forward. In the next videos we'll continue with other tasks for the ultrasonic sensor.
Курсове и занятия включващи този Урок
Този Урок е използван в следните курсове и занятия.
EV3 Basic Course. Introduction to robot programming, construction and sensor use
This course is designed for students, mentors and teachers that are completely new to LEGO Mindstorms EV3 robots and would like to start using them to learn, in classes or at competitions. It is quite different from previously built resources at FLLCasts because it makes no assumption on any previous knowledge and tries to introduce everything step-by-step.
- 38
- 193:26
- 30
Ultrasonic Sensor
We are introducing the LEGO Mindstorms EV3 Ultrasonic Sensor. The first program is actually to detect an object and stop near it, at about 4 inches/10 centimeters. The ultrasonic sensor could be used during robotics competitions, but most of its use is for experiments.
- 5
- 0
- 3
- 3d_rotation 0
Instructors Remote Training
If you are working with students and you want to introduce Robotics to your class or you want to mentor a FLL team, but you are insecure about your technical knowledge in the Robotics field, then this is the right place for you. Having in mind teachers' busy schedule, we have design two different schedules and added an option to design one just for you. FLLCasts's Mindstorms EV3 Robotics Online Training is the perfect match for any teacher.
After the completion of each task the participant has to upload his solution for verification.
- 136
- 280:11
- 156
Ultrasonic Sensor Theory and Practice
We are introducing the LEGO Mindstorms EV3 Ultrasonic Sensor. The first program is actually to detect an object and stop near it, at about 4 inches/10 centimeters. The ultrasonic sensor could be used during robotics competitions, but most of its use is for experiments.
- 4
- 0
- 0
- 3d_rotation 0
Instructors Remote Training
If you are working with students and you want to introduce Robotics to your class or you want to mentor a FLL team, but you are insecure about your technical knowledge in the Robotics field, then this is the right place for you. Having in mind teachers' busy schedule, we have design two different schedules and added an option to design one just for you. FLLCasts's Mindstorms EV3 Robotics Online Training is the perfect match for any teacher.
After the completion of each task the participant has to upload his solution for verification.
- 136
- 280:11
- 156
Ultrasonic Sensor
We are introducing the LEGO Mindstorms EV3 Ultrasonic Sensor. The first program is actually to detect an object and stop near it, at about 4 inches/10 centimeters. The ultrasonic sensor could be used during robotics competitions, but most of its use is for experiments.
- 4
- 0
- 3
- 3d_rotation 0