EV3 Programming Resources
EV3 Colour Detection Project
Step 1: Setup
In groups, choose one laptop to be used for coding and a second laptop for research. Close all other laptops.
Download and install Visual Studio Code and the LEGO MINDSTORMS EV3 MicroPython extension.
Connect to the local wifi:
- SSID: ROBOTS
- Password: 99999999
Step 2: Buld the Car
The instructions are available here:
Connect the sensors and motors using the three cables:
- The proximity sensor is plugged into S1
- The motors are plugged into MA and MB
Step 3: Code the Parking Gate
Start a new project. Open up main.py and use this code as a starting point:
#!/usr/bin/env pybricks-micropython from pybricks import ev3brick as brick from pybricks.ev3devices import (Motor, TouchSensor, ColorSensor, InfraredSensor, UltrasonicSensor, GyroSensor) from pybricks.parameters import (Port, Stop, Direction, Button, Color, SoundFile, ImageFile, Align) from pybricks.tools import print, wait, StopWatch from pybricks.robotics import DriveBase import time # Start the program with a beep brick.sound.beep() # Define which motors and sensors are connected motorLeft = Motor(Port.A) motorRight = Motor(Port.B) colorSensor = ColorSensor(Port.S1) # Fetch current color print("Current Color: "+str(colorSensor.color())) # Turn left motorLeft.run(100) motorRight.run(0) # Wait three seconds time.sleep(3) # Turn right motorLeft.run(0) motorRight.run(100) # Wait three seconds time.sleep(3) # Move forward motorLeft.run(100) motorRight.run(100) # Wait three seconds time.sleep(3) # Move backwards motorLeft.run(-100) motorRight.run(-100) # Wait three seconds time.sleep(3) # Stop motorLeft.run(100) motorRight.run(100)
Read the starting code line by line and all the comments. As a group strive to understand every line of code.
Your bin will have two names, the LEGO Brick will use the name on the red tape. Use Visual Studio Code to the LEGO Brick:
Push F5 on a PC or FN+F5 on a Mac to test your code.
The colour sensor will provide a number representing which color it is currenlty sensing:
Follow a Line
Using the provided electrical tape, create a line on your desk resembling something like this:
Code your LEGO car to follow the line.
Stay in a Box
Using the provided electrical tape, create a shape on your desk resembling something like this:
Code your LEGO car stay within your shape.
Step 4: Submitting
Submit both of your your
main.py files and a list of group members that were present in Blackboard.