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Read data via bluetooth using c#

I am using Lecia Disto e7100i which basically measures distance and area using laser. This device has bluetooth and can be paired with windows.
I am trying to develop an wpf app that reads the mesaured data using c#
There is no sdk that comes along with the device.
I have tried to use 32feet.Net but since there is no proper documentation I don't know where to start.
Is there any way that I can do to solve my problem?

This is not a full response, instead its more of a guideline on how to resolve your issue:
Pair the device with your Computer
Run the included software that displays the data somehow
Use WireShark to analyze the traffic
see if it is a standard protocol type or something custom
understand the protocol and reimplement it using c# and BluetoothSockets

To get started, you can try:
var client = new BluetoothClient();
// Select the bluetooth device
var dlg = new SelectBluetoothDeviceDialog();
DialogResult result = dlg.ShowDialog(this);
if (result != DialogResult.OK)
{
return;
}
BluetoothDeviceInfo device = dlg.SelectedDevice;
BluetoothAddress addr = device.DeviceAddress;
Console.WriteLine(device.DeviceName);
BluetoothSecurity.PairRequest(addr, "PIN"); // set the pin here or take user input
device.SetServiceState(BluetoothService.HumanInterfaceDevice, true);
Thread.Sleep(100); // Precautionary
if (device.InstalledServices.Length == 0)
{
// handle appropriately
}
client.Connect(addr, BluetoothService.HumanInterfaceDevice);
Also make sure that
Device appears in "Bluetooth devices" in the "Control panel".
Device is HID or change code accordingly.
Hope it helps. Cheers!

Try this demo project, and the following articles after that one.
Try to follow this tutorial
Here you can see a direct answer by the mantainer of 32feet, with which you can get in touch
Check also this answer

Play sound on laptop speaker, even if additional speakers are connected (but not listed in device list)

I'd like to play a soundfile from the speakers integrated in the laptop, even if an additional speaker is connected via the headphone jack (but it's not listed in the sound device list).
I've had a look at How can I make the computer beep in C#? and How to beep using PC speaker? and have understood that the beep driver was removed in windows 7.
However, I do not want to use this extremely simple integrated speaker controlled by the removed driver, but the normal one present in most modern laptops.
Unfortunately, when I connect my external speakers, they do not show up as an additional device. When I run this code (using NAudio), I always get just one result, and it's the same whether the external speakers are connected or not:
var enumerator = new MMDeviceEnumerator();
foreach (var endpoint in enumerator.EnumerateAudioEndPoints(DataFlow.Render, DeviceState.Active))
{
Console.WriteLine(endpoint.FriendlyName);
}
Is it possible to play a sound on the normal laptop speaker, while an external speaker is connected?
Edit:
I don't think my question is a duplicate of Play a sound in a specific device with C#
I don't see an additional device when I connect my external speakers, so I guess my laptop doesn't have multiple sound cards (how can I verify?).
The solution from the other question (waveOut.DeviceNumber = deviceNumber;) doesn't work for me neither. When I choose deviceNumber = 0;, the sound comes from my external speaker if it's connected. If I set deviceNumber = 1; (while it's connected) I get a MmException

I see I'm a bit late for the party but i was working on something similar and got to this solution.
Hope it helps someone in the future :)
var enumerator = new MMDeviceEnumerator();
IWavePlayer waveOut = new WasapiOut();
foreach (var endpoint in enumerator.EnumerateAudioEndPoints(DataFlow.Render, DeviceState.Active))
{
if (endpoint.FriendlyName == "Name of the device you want")
{
waveOut = new WasapiOut(
endpoint, AudioClientShareMode.Exclusive, false, 0);
AudioFileReader wave = new AudioFileReader("Audio Name");
waveOut.Init(wave);
waveOut.Play();
break;
}
}

How can i create Flashlight app in uwp C#

I have Lumia 830 and i've tried to create flashlight app in UWP C#. my device Flashlight works great but i don't know why i can't create my own app turn on / off Torch of my phone.
I use Lamp class :
var lamp = await Lamp.GetDefaultAsync();
if (lamp == null)
{
ShowErrorMessage("No Lamp device found");
return;
}
lamp.IsEnabled = true;
when run this code on my phone "lamp" is null and it couldn't find my FlashLED. I've got this code from MSDN.Microsoft.com and thay said
If the returned object is null, the Lamp API is unsupported on the
device. Some devices may not support the Lamp API even if there is a
lamp physically present on the device.
This class doesn't work on my Lumia 830 i don't kno why? :(
also i use this code :
var mediaDev = new MediaCapture();
await mediaDev.InitializeAsync();
var videoDev = mediaDev.VideoDeviceController;
var tc = videoDev.TorchControl;
if (tc.Supported)
{
// But wait, for this to work with Blue camera drivers, we have to Start a recording session
// Create video encoding profile as MP4
var videoEncodingProperties = MediaEncodingProfile.CreateMp4(VideoEncodingQuality.Vga);
// Start Video Recording
var videoStorageFile = await KnownFolders.VideosLibrary.CreateFileAsync("tempVideo.mp4", CreationCollisionOption.GenerateUniqueName);
await mediaDev.StartRecordToStorageFileAsync(videoEncodingProperties, videoStorageFile);
// Turn on Torch
mediaDev.VideoDeviceController.TorchControl.Enabled = true;
}
this code works and my FlashLED turn on but it record video and it take's user SD Card memory.
please help me if you know there is best way to turn on/off Torch or FlashLED.
thanks in advance
Hussein Habibi Juybari

The Lamp API is designed for Windows 10 devices only and you can only use it on devices which support the API. Currently supported devices are 950/950XL, 650, and 550. Older devices will not be updated to support this API. You should fall back to the Windows 8.1 method of turning on flash when you detect that the lamp device is not available on older devices.
From: https://wpdev.uservoice.com/forums/110705/suggestions/15846967

Please test default sample named LampDevice (cf. https://github.com/Microsoft/Windows-universal-samples/tree/master/Samples/LampDevice). Do you have the same behavior ? I just tested on Lumia 930 it works fine. No Lumia 830 to test it.

Is it possible to launch system/third party app using an NDEFLaunchApp record to get the URI and by using LaunchUriAsync without NFC Tags?

So I have spent the whole night looking like a zombie in the morning trying to figure out how the OS handles an NFC tap for an NDEFLaunchApp Record and I have known the following.
I'm pretty sure that there is a workaround which lets you launch a system app / third party app (if you know the product Id / GUID) from your app. As there are apps in the Windows Phone Store which I have somehow figured out what I've been trying to.
I have come up with the following code:
NdefLaunchAppRecord appLaunchRecord = new NdefLaunchAppRecord();
appLaunchRecord.AddPlatformAppId("WindowsPhone", "{App GUID}");
appLaunchRecord.Arguments = "_default";
// Creating a new NdefMessage from the above record.
var message = new NdefMessage { appLaunchRecord };
// Getting the record from the message that we just created
foreach (NdefLaunchAppRecord record in message)
{
var specializedType = record.CheckSpecializedType(false);
if (specializedType == typeof(NdefLaunchAppRecord))
{
var x = String.Join(" ", record.Payload);
// Getting the payload by GetString gets a formatted Uri with args
string result = System.Text.Encoding.UTF8.GetString(record.Payload, 0, record.Payload.Length);
// result = "\0\fWindowsPhone&{5B04B775-356B-4AA0-AAF8-6491FFEA5630}\0\b_default";
// result = "(null)(form feed)WindowsPhone&{App GUID}(null)(backspace)_default
// So this will be sent to the OS and I believe the OS will then launch the specified app by an unknown protocol
// like xxx://result
// and the app will be launched?
// So is it then possible to somehow call the following:
await Windows.System.Launcher.LaunchUriAsync(new Uri("OUR MAGIC RESULT?", UriKind.RelativeOrAbsolute));
If anyone has / can figure out a way for this, it would be a REAL Service to the WP Community as developers are restricted by Microsoft to open certain settings / apps which are actually needed by those apps. For instance (speech settings, audio settings, about settings, alarms, region settings, date+time);
APPS that possibly have a workaround:
Music Hub Tile (Launches the old Music+Videos Hub)
http://www.windowsphone.com/en-gb/store/app/music-hub-tile/3faa2f9e-6b8d-440a-bb60-5dd76a5baec1
Tile for Bing Vision
http://www.windowsphone.com/en-gb/store/app/tile-for-bing-vision/05894022-e18c-40a4-a6cc-992383aa7ee8

There are reserved uri schemes for bing and zune.
See: http://msdn.microsoft.com/en-us/library/windows/apps/jj207065(v=vs.105).aspx
Those two apps propably use these and have found some undocumented use of the scheme.
If there is an uri scheme that launches any app by guid from within your app, it is hidden well.
Currently you can only launch apps that registered for an uri scheme or file association.

NAudio recording from headset

I have been using the code in http://opensebj.blogspot.com/2009/04/naudio-tutorial-5-recording-audio.html to record audio. Basically this code:
WaveIn waveInStream;
WaveFileWriter writer;
waveInStream = new WaveIn(44100,2);
writer = new WaveFileWriter(outputFilename, waveInStream.WaveFormat);
waveInStream.DataAvailable += new EventHandler<WaveInEventArgs>(waveInStream_DataAvailable);
waveInStream.StartRecording();
It works perfectly and record every sound on the system. The problem arises when I pluck in a headset (not usb, just directly into the headset jack on the built in soundcard on my laptop). This has the effect that any sound I can hear in the headset is not recorded.
I think it has something to do with which device i am recording from, but I can't quite figure it out.
I am trying to record a conversation, which means I would like to record the sound that comes from the mic and the sound I can hear in the headset at the same time.
Can someone point me in the right direction for this? Thanks.

// Get default capturer
waveInStream = new WaveIn(44100,2);
Now if you plug in your headset microphone/speaker then Windows will detect it but your program is still using the old 'default' endpoint. Not the lastly added device. This needs to be updated.
One of the solution would be to poll the endpoints and see if any new (default) device has been added to the system and then stop-start the recording with the new device.
waveInStream.StopRecording();
// assign the default recording device if not already done
//waveInStream.DeviceNumber = 0;
waveInStream.StartRecording();
Let me know if I was not very clear in the explanation.