Building and creating your own Lego robot is a fun and exciting process full of trial and error. When building, you have to create new ideas and building techniques for your robot. Programming helps the robot move, turn, and do other things that make the robot become more alive and do cool movements. At first, the quality of the Lego EV3 program and kit seems top of the line. Though not all of the things Lego EV3 has presented in the kit is useful or of good quality.
The best example of this failure is the sensors provided in the kit. They are sometimes unreliable and get confused over sensing the correct thing. The color sensor has a tendency of sensing its own shadow or sensing different colors which you don’t want it to sense. When the sensor is on, blue, green, and red lights turn on in the sensor that comes out the end. This makes the robot sense. On a shiny surface, those colors reflect back into the sensor, making it sense itself. “The color sensor was always picking up its own reflection…” says Dean D., a 7th grade student who worked on Lego EV3. While working on EV3, his sensor repeatedly failed him. The best way to avoid having this problem is putting, and testing the robot on a a non-reflective surface.
Though color sensors disrupt the sensing of the robot on the ground, the number of parts provided comes in a limited number. In the kit, the parts come in a variety of shapes and sizes, but the supply of pieces is low. In the kit, there are only 2 full sized motors, 1 medium motor, a gyro sensor, 2 touch sensors, a color sensor, an ultrasonic sensor, and the main robot body. All this seems like a lot of stuff, but when you build a car or a truck with 4 or more wheels, you would want to have more motors than sensors! It would also be nice to have some kind of remote control in every kit so you wouldn’t have to program the robot differently every time. Joshua M., a 7th grader, new with robotics says, “…more parts in general, more sensors…” Dean D. says, “…it would be better to have more of everything…”. The lack of parts gives a limit to your imagination.
Though the quality of sensors is tainted and the parts of kit are numbered, it is always fun to play with the childhood Lego Robotic sets. Playing with the set will improve programming skills, building ethics, multiplication, and fun. Who doesn’t like Lego?