This is the comm protocol compatible with Hobbyking IOS & Android 4CH WiFi Receiver
private void sendRawChannels(int ch1, int ch2, int ch3, int ch4)
{
byte[] buffer = new byte[11];
//Header
buffer[0] = 85;
buffer[1] = 0;
buffer[2] = 11;
buffer[3] = 0;
//Channels
buffer[4] = (byte)(ch1 & 255);
buffer[5] = (byte)(ch2 & 255);
buffer[6] = (byte)(ch3 & 255);
buffer[7] = (byte)(ch4 & 255);
buffer[8] = 0;
buffer[9] = 0;
int sum = 0;
for (int i = 0; i < 9; i++)
sum += (int)buffer[i];
buffer[10] = (byte)(sum % 256);
sock.Client.Send(buffer);
}
The boat for this is here
Arduino
C Sharp
2px; width: 655px;">using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; using System.Net.Sockets; namespace Hobbyking_4CH_WiFi { public partial class Form1 : Form { int mouse_x = 0; int mouse_y = 0; bool mouse_down = false; int joy_x = 0; int joy_y = 0; int mouse_x2 = 0; int mouse_y2 = 0; bool mouse_down2 = false; int joy_x2 = 0; int joy_y2 = 0; string RXdata = ""; TcpClient sock = new TcpClient(); public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { mouse_x = 100; mouse_y = 180; joy_x = 100; joy_y = 0; mouse_x2 = 100; mouse_y2 = 100; joy_x2 = 100; joy_y2 = 100; timer1.Enabled = true; } private void panel_JoyStick_MouseDown(object sender, MouseEventArgs e) { if (mouse_down) return; mouse_x = e.X; mouse_y = e.Y; mouse_down = true; JoyStick(); } private void panel_JoyStick_MouseUp(object sender, MouseEventArgs e) { mouse_down = false; mouse_x = 100; JoyStick(); } private void panel_JoyStick_MouseMove(object sender, MouseEventArgs e) { if (!mouse_down) return; mouse_x = e.X; mouse_y = e.Y; JoyStick(); } private void JoyStick() { joy_x = mouse_x; joy_y = 200 + (0 - mouse_y); panel_JoyStick.Refresh(); TXupdate(); } private void panel_JoyStick_Paint(object sender, PaintEventArgs e) { SolidBrush brush = new SolidBrush(Color.Aquamarine); Pen pen = new Pen(Color.White); //e.Graphics.DrawPie(pen, new Rectangle(10, 10, 100, 100), 30.0f, 90.0f); //e.Graphics.RotateTransform(45.0f); e.Graphics.DrawArc(pen, new Rectangle(100 - 12, 100 - 12, 25, 25), 0.0f, 360.0f); e.Graphics.DrawLine(new Pen(Color.White, 10f), new Point(100, 100), new Point(mouse_x, mouse_y)); e.Graphics.DrawArc(pen, new Rectangle(mouse_x - 25, mouse_y - 25, 50, 50), 0.0f, 360.0f); string s = joy_x.ToString() + " " + joy_y.ToString(); e.Graphics.DrawString(s, this.Font, Brushes.Yellow, new PointF(10f, 10f)); } private void panel_JoyStick2_MouseDown(object sender, MouseEventArgs e) { if (mouse_down2) return; mouse_x2 = e.X; mouse_y2 = e.Y; mouse_down2 = true; JoyStick2(); } private void panel_JoyStick2_MouseUp(object sender, MouseEventArgs e) { mouse_down2 = false; mouse_x2 = 100; mouse_y2 = 100; JoyStick2(); } private void panel_JoyStick2_MouseMove(object sender, MouseEventArgs e) { if (!mouse_down2) return; mouse_x2 = e.X; mouse_y2 = e.Y; JoyStick2(); } private void JoyStick2() { joy_x2 = mouse_x2; joy_y2 = 200 + (0 - mouse_y2); panel_JoyStick2.Refresh(); TXupdate(); } private void panel_JoyStick2_Paint(object sender, PaintEventArgs e) { SolidBrush brush = new SolidBrush(Color.Aquamarine); Pen pen = new Pen(Color.White); e.Graphics.DrawArc(pen, new Rectangle(100 - 12, 100 - 12, 25, 25), 0.0f, 360.0f); e.Graphics.DrawLine(new Pen(Color.White, 10f), new Point(100, 100), new Point(mouse_x2, mouse_y2)); e.Graphics.DrawArc(pen, new Rectangle(mouse_x2 - 25, mouse_y2 - 25, 50, 50), 0.0f, 360.0f); string s = joy_x2.ToString() + " " + joy_y2.ToString(); e.Graphics.DrawString(s, this.Font, Brushes.Yellow, new PointF(10f, 10f)); } private void btnConnect_Click(object sender, EventArgs e) { btnConnect.Enabled = false; if (checkBoxSerialMode.Checked == true) { if (serialPort1.IsOpen) { btnConnect.Text = "Open"; serialPort1.Close(); } else { btnConnect.Text = "Close"; serialPort1.Open(); } } else { if (!sock.Connected) { sock.Connect("10.10.100.254", 8899); btnConnect.Text = "Close"; timerUpdate.Enabled = true; } else { timerUpdate.Enabled = false; sock.Close(); btnConnect.Text = "Open"; } } btnConnect.Enabled = true; } private void timerUpdate_Tick(object sender, EventArgs e) { RXdata = ""; TXupdate(); } private void TXupdate() { //trackBar1.Value, trackBar2.Value, trackBar3.Value, trackBar4.Value int x = (joy_x + (trackBar1.Value / 2)) / 2; int y = (joy_y + (trackBar2.Value / 2)) / 2; int x2 = (joy_x2 + (trackBar3.Value / 2)) / 2; int y2 = (joy_y2 + (trackBar4.Value / 2)) / 2; sendRawChannels(x, y, x2, y2); } private void serialPort1_DataReceived(object sender, System.IO.Ports.SerialDataReceivedEventArgs e) { if (e.EventType == System.IO.Ports.SerialData.Chars) { RXdata += serialPort1.ReadExisting(); } } private void timer1_Tick(object sender, EventArgs e) { if (RXdata.Length > 0) { labelRX.Text = RXdata; RXdata = ""; } } private void labelRX_DoubleClick(object sender, EventArgs e) { labelRX.Text = ""; } private void sendRawChannels(int ch1, int ch2, int ch3, int ch4) { byte[] buffer = new byte[11]; //Header buffer[0] = 85; buffer[1] = 0; buffer[2] = 11; buffer[3] = 0; //Channels buffer[4] = (byte)(ch1 & 255); buffer[5] = (byte)(ch2 & 255); buffer[6] = (byte)(ch3 & 255); buffer[7] = (byte)(ch4 & 255); buffer[8] = 0; buffer[9] = 0; int sum = 0; for (int i = 0; i < 9; i++) sum += (int)buffer[i]; buffer[10] = (byte)(sum % 256); if (checkBoxSerialMode.Checked == true) { if (serialPort1.IsOpen) serialPort1.Write(buffer, 0, 11); } else if (sock.Client.Connected) { sock.Client.Send(buffer); } } }//Class }
