[quote]Hi,
I’m beginner in C# and wrote this code below in Microsoft Visual C# 2008 Express in Console application to control DC motors. Actually I want to control DC motors from the keyboard, but the problem is I have to press enter after press key.
How can I solve this problem? and How can i change Com port?
Thank you.
using RoboticsConnection.Serializer;
using RoboticsConnection.Serializer.Ids;
using RoboticsConnection.Serializer.Sensors;
using RoboticsConnection.Serializer.Components;
using RoboticsConnection.Serializer.Controllers;
using System;
using System.Threading;
 
namespace test
{
    class Program
    {
        static Serializer serializer;
        static PwmDCMotorController LeftMotor;
        static PwmDCMotorController RightMotor;
 
        static void Main(string[] args)
        {
            serializer = new Serializer();
 
            LeftMotor = new PwmDCMotorController(serializer);
            RightMotor = new PwmDCMotorController(serializer);
 
            LeftMotor.DCMotorId = DCMotorId.DCMotor2;
            RightMotor.DCMotorId = DCMotorId.DCMotor1;
 
            serializer.StartCommunication();
            while (true)
            {
                serializer.PumpEvents();
 
             
                Console.Write("Enter Key:");
                string s = Console.ReadLine();
 
                if (s == "w")
                {
                    LeftMotor.Speed = 100;
                    RightMotor.Speed = 100;
                }
                if (s == "a")
                {
                    LeftMotor.Speed = -100;
                    RightMotor.Speed = 100;
                }
                if (s == "d")
                {
                    LeftMotor.Speed = 100;
                    RightMotor.Speed = -100;
                }
                if (s == "x")
                {
                    LeftMotor.Speed = -100;
                    RightMotor.Speed = -100;
                }
                if (s == "s")
                {
                    LeftMotor.Speed = 0;
                    RightMotor.Speed = 0;
                }
            }
        }
    }
}

Something like this. The true in the readkey function blocks the key pressed from being displayed on the screen.

            ConsoleKeyInfo cki;
            while (true)
            {
                cki = Console.ReadKey(true);
                switch (cki.Key)
                {
                    case ConsoleKey.DownArrow:
                        //Do DownArrow key processing here
                        break;
                    case ConsoleKey.UpArrow:
                        //Do UpArrow key processing here
                        break;
                    case ConsoleKey.LeftArrow:
                        //Do LeftArrow key processing here
                        break;
                    case ConsoleKey.RightArrow:
                        //Do RightArrow key processing here
                        break;
                    case ConsoleKey.S:
                        //Do s key processing here
                        break;
                    default:
                        //Do any other key processing here
                        break;
                }

Hope this helps.

Bruno