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Connecting the Unconnectable – A VB.NET Bluetooth Journey Prologue – The Forum Post Posted by CodeNewbie_42 on VBForums, 3:14 AM: "Help! I need to send a simple string from my VB.NET Windows app to a Bluetooth-enabled Arduino. I’ve tried SerialPort, 32feet.NET, even PowerShell – nothing works. The device pairs, but no data flows. What am I missing?" Chapter 1 – The Reply from a Guru User: SerialPortSavior (MVP, 12,847 posts) Replied: "Ah, young coder. Bluetooth on Windows with VB.NET is not magic – it’s emulated serial over RFCOMM . Here’s the path:" Step 1: Install 32feet.NET (the de facto library)

For Each device In devices If device.DeviceName.Contains(deviceName) Then Return device End If Next Return Nothing End Function vb net bluetooth vbforums

Public Class BluetoothHelper Public Shared Sub SendString(targetDeviceName As String, message As String) Try ' Method 1: Try COM ports first For Each com In My.Computer.Ports.SerialPortNames Using sp As New SerialPort(com, 9600) sp.Open() sp.WriteLine(message) sp.Close() Return End Using Next ' Method 2: Fallback to 32feet.NET Dim device = FindBluetoothDevice(targetDeviceName) If device IsNot Nothing Then SendData(device, message) End If Catch ex As Exception MessageBox.Show("Bluetooth failed: " & ex.Message) End Try End Sub End Class CodeNewbie_42 marks the thread as SOLVED and writes: "Turns out, the answer was hiding in plain sight. Bluetooth in VB.NET isn't hard – it's just serial communication with a different handshake . Thank you, VBForums. May your posts remain forever unarchived." Thread closed. 37,284 views. 9 helpful votes. Want me to turn this into a full downloadable VB.NET project or explain any specific Bluetooth scenario (e.g., receiving data, multiple connections, pairing without user dialog)? Connecting the Unconnectable – A VB

Public Sub SendData(device As BluetoothDeviceInfo, message As String) Dim ep As New BluetoothEndPoint(device.DeviceAddress, BluetoothService.SerialPort) Dim client As New BluetoothClient() client.Connect(ep) The device pairs, but no data flows

' In Package Manager Console: ' Install-Package InTheHand.Net.Personal