Lego Mindstorms EV3 (Firmware: V1.09H)

This application uses DirectInput API however can be disabled by editing the Joystick and MindstromController project properties or changing the configuration to ReleaseWithoutJoystick. Just remove the Conditional Compilation Symbol USE_JOYSTICK on the Build tab.

For those who want to contribute, please read the CONTRIBUTING.md in the root folder of the solution.

Using the code in another solution shouldn't be hard. Just reference the MindstormCore project and use the following code snippet.

It also uses ChatGPT to communicate with. In order to obtain a valid OpenAI API Key, you need to create one at https://platform.openai.com/account/api-keys, and set it as an environment variable called OpenAI:ApiKey. Developers can use this command to create a secret in developer console: dotnet user-secrets set "OpenAI:ApiKey" "openai-api-key"

Connect to brick

var brick = new Brick("COM1"); // Note that you need to find the correct COM port to connect.
brick.Connect();

Using the speaker

Play a melody

brick.PlayMusic(new KisKeceLányom());

Turn on the speaker

brick.Beep(frequecncy, durationInMs);

Turn off the speaker

brick.Silence();

Play embedded sounds

brick.PlaySound(EmbeddedSound.ElephantCall, PlayType.PlayOnce);

Using the motors

Set motors

brick.SetMotors(OutputPort.B, OutputPort.C, OutputPort.D);

Start motors with different speed

var leftMotorSpeed = 100; // Minimum: -100, maximum: 100
var rightMotorSpeed = -100;
brick.SetMediumMotorSpeed(DaisyChainLayer.EV3, new SetMotorSpeedParams(brick.LeftMotor, leftMotorSpeed), new SetMotorSpeedParams(brick.RightMotor, rightMotorSpeed));

Stop Motors

brick.SetMediumMotorSpeed(DaisyChainLayer.EV3, new SetMotorSpeedParams(brick.Motors, 0));
or
brick.StopMotor(DaisyChainLayer.EV3, brick.Motors, BreakType.Break);

Using the screen

Clear the screen

brick.ClearScreen();

Any drawing will be shown after this command is called

brick.UpdateScreen();

Put a pixel on the screen

brick.PutPixel(10, 10, LCDColor.Black);
or
brick.PutPixel(new EV3Point(10, 10), LCDColor.Black);

Draw text on screen

brick.DrawString(10, 10, "Hello World!", LCDColor.Black, FontType.Normal);
or
brick.DrawString(new EV3Text(new EV3Point(10, 10), "Hello World!"));

Create an IEV3DrawingElement

IEV3DrawingElement element = new EV3Circle(50, 50, 20, true);
or
IEV3DrawingElement element = new EV3Line(50, 50, 100, 100);
or
IEV3DrawingElement element = new EV3Point(10, 10);
or
IEV3DrawingElement element = new EV3Rectangle(10, 10, 90, 90, false);
or
IEV3DrawingElement element = new EV3Text(10, 10, "Hello World!");

Draw an IEV3DrawingElement on the screen

brick.Draw(element, LCDColor.Black);

Start a game

var snakeGameEngine = new SnakeGameEngine(brick);
snakeGameEngine.GameLoop();
or
var circlesGameEngine = new CirclesGameEngine(brick);
circlesGameEngine.GameLoop();

Note that if something goes wrong, press the Back, Left, and Center buttons on your EV3 device to restart it.