public void SetPixelColor(int pixel, LedColor color) { if (port.IsOpen) { byte[] buffer = new byte[13]; buffer[0] = 0xAA; buffer[1] = Convert.ToByte(pixel); buffer[2] = color.R; buffer[3] = color.G; buffer[4] = color.B; port.Write(buffer, 0, buffer.Length); } }