Science Activities EV3

Data Logging EV3

What is a data logging?
Data logging is a process of using EV3 and the computer to collect usually scientific experiments. It is a technologic method of helping students gain an initial understanding of data logging. After collecting data, the students analyze the data and save the results of collecting and analysis. In class, we did some tasks challenges such as the LEGO temperature sensor, the color sensor, and the ultrasonic sensor.

Description of using the LEGO temperature sensor:

For this project, the students will learn how to record values for temperature sensor experiment. In this science experiments, we had two cups of water, one with cold water and the other one with hot water. Also, we prepare the temperature sensor and connect it to one of the ports for example port one. The EV3 brick needs to be connected to the computer after that we go into the software and go to file and then new project to choose experiment which uses for data logging. Since the robot was connected, it started to collect the data logging straight away. At the bottom left of the coding screen, there is the experiment unit set up where we can adjust the duration and samples of seconds. On the screen, there are the X-axis shows which the time and the Y-axis which shows the sensors that you want to measure.A graph will appear and will show a line going up and down which represent the measurement of the hot and cold water.

Description of using the color sensor:

For this experiment, we need the EV3 robot and a box to cover and uncover the color sensor when we run the program. So, we plugged the color sensor into one of the ports and connected it to the EV3 and connect the robot to the computer. The color sensor automatically appeared on the screen. From the bottom, we set up the color sensor and selected the Ambient light intensity. After that, we downloaded the experiment and then unplugged the robot from the computer and navigate the file in the robot. When we press on the color sensor experiment, we can see the set of the green light is flashing which means the experiment is running. After that, we covered the color sensor for seconds and uncover it again until green flash stop flashing. When we connect the cable again to the computer, we uploaded the program from the right button. A window appeared with the experiment that we saved.

It showed the light level when the sensor was cover it drops and it's rais when it uncovers.
The system allowed for data logging from any of attached sensors. This data is available for real-time analysis or manipulation. I can tell the students can collect and do the math on their own data and learn how to use this simple power technology in a fun way.