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Hi,
I am using the Xsens dot server to record and log quaternions from the Xsens dots. I have connected 5 sensors, they are being synced and start logging. When I review the .csv log file afterward the number of frames from each sensor does not match:
Sensor 1: 1308 frames
Sensor 2: 639 frames
Sensor 3: 645 frames
Sensor 4: 626 frames
Sensor 5: 1319 frames
I have tried multiple times, and there is always 1 or 2 sensors having more than double the number of samples than the others.
I running the server on a raspberry py 4 as suggested.
Best regards Mathias

Hello,

I have used xsens_dot_server for Xsens DOT in windows 10.
There is a problem that cannot be connected as in the previous issue. And I got a message that
ERROR: component 'SensorServer' received unexpected event 'bleSensorData' in state 'Idle'
To solve this, I checked the sensorServer.js code and created a new state diagram(cause it's completely different from the document).

1. Considering this, the process of making the sensor idle state after checking whether the sensor is disconnected is repeated. In this case, why is the event 'bleSensorData' occurring?
2. And I think when the connection of the sensor is temporarily disconnected, it would be better to try to reconnect it. Now, even though it returns to the idle state, the web GUI does not change to the disconnected button. This is very confusing.
3. Besides, I have to connect at least 6 sensors simultaneously, but it is very difficult to connect more than 3 sensors... I wonder if it worked well when you experimented with multiple connections.

Hi,
I'm working on a project which need the angular velocity, acceleration(not free acceleration) and Euler angles. I checked the six modes on server. However, none of them can get these three kinds of data at the same time.

Could you please some suggestions about this issues?

Best regrads

I am trying to connect to the DOT server but when I ran the command "node xsensDotServer" I got this error:

Node: 12.16.2
NPM: 8.16.0
Bluetooth 4.0: I had to do the workaround

C:\Users\Sam\xsens_dot_server>npm install
npm WARN deprecated [email protected]: Please upgrade to @mapbox/node-pre-gyp: the non-scoped node-pre-gyp package is deprecated and only the @mapbox scoped package will recieve updates in the future

up to date, audited 220 packages in 19s

3 packages are looking for funding
run npm fund for details

14 vulnerabilities (3 low, 2 moderate, 6 high, 3 critical)

To address issues that do not require attention, run:
npm audit fix

Some issues need review, and may require choosing
a different dependency.

Run npm audit for details.

C:\Users\Sam\xsens_dot_server>node xsensDotServer
Web GUI Handler instantiated
BLE Handler started.
Webserver listening on port 8080, IP address: 192.168.1.240
C:\Users\Sam\xsens_dot_server\node_modules\bluetooth-hci-socket\lib\usb.js:95
this._hciEventEndpoint.on('data', this.onHciEventEndpointData.bind(this));
^

TypeError: Cannot read property 'on' of undefined
at BluetoothHciSocket.start (C:\Users\Sam\xsens_dot_server\node_modules\bluetooth-hci-socket\lib\usb.js:95:28)
at Hci.init (C:\Users\Sam\xsens_dot_server\node_modules\noble\lib\hci-socket\hci.js:102:18)
at NobleBindings.init (C:\Users\Sam\xsens_dot_server\node_modules\noble\lib\hci-socket\bindings.js:82:13)
at Noble. (C:\Users\Sam\xsens_dot_server\node_modules\noble\lib\noble.js:57:24)
at processTicksAndRejections (internal/process/task_queues.js:79:11)

Thank you,
Sam Mathew

I am using raspberry pi 4 as suggested and I have troubles with the synchronization. It fails almost every time. I have been lucky a few times but when I try and do it again it fails. Please look at the sync function and make it more robust. It is also very slow.

Hello, i am having trouble connecting the xsens dots to the xsens dot server on windows.
I followed the installation and i am able to run the server, and its possible for me to start scanning. The button now shows stop scanning.
However after a while it switches back to start scanning while the sensors are not showing up on the Server page. I got no installation errors and the Console doesn't show any error aswell (last message is blePoweredOn: True )

Sensors are turned on and broadcasting (according to the onboard LEDs), the mobile app has no problem connecting to the sensors.
Has anyone experienced a similar issue and was able to fix this?

Best Regards

Hi

when I start logging , syncing takes more then 15 to 20 seconds, Can we able to make it fast ?

Best regards
Naveen
NxtQ Pvt Ltd

I'm trying to install xsens_dot_server and it's failing when running the command npm install in root directory.
I am using MacOS 12.2.1 with Bluetooth 4.2.

NPM Version : 5.6.0
Node Version : 8.9.4

Here's the complete log from terminal:

Log File: xsens-log.log

Please help me out!

Is there some limitation in the code that makes it impossible to connect to >5 sensors?

Hello,

I connected single dot to raspberry pi 4 model , unable to collect log file using Xsens_dot_server source code. Please let me know how to get that. In the GUI it showing continuously sync..state.

I'm running into the known issue where it's not possible to connect to a DOT on macOS Catalina. This issue seems to drill down to the discovery of the DOT's characteristics by noble in the BleHandler class (code).

In my own experiments using noble I have the same issue. Whenever I try to discover the DOT's characteristics with noble, the callback is never called. The exact same code works fine on my RPi3 (w/ Raspbian buster and node v14.14.0).

I notice the same problem with service and characteristics discovery when I use a native BLE discovery app for macOS such as Light Blue (while the same app on iOS is able to discover the DOT without any issues). I also performed some tests using an old BLE dongle (instead of using the MacBook's built-in Bluetooth adapter), but with the same results.

Were you able to find out what is causing this problem and maybe have an idea of what a potential solution for this problem could be? For instance, is the issue caused by the Bluetooth implementation of macOS, or could it be caused by the DOT itself and how it implements the Bluetooth specification?

Do you expect to include Linux OS for the server?

Hello,

I have a Python script that is successfully getting data from a single sensor. However, no matter which setting I write to the Control Characteristic, I appear to only be getting data in "Orientation Quaternion" mode. No matter which mode I specify at the end of my byte string (for example, b'\x01\x01\x02' for "Extended (Quaternion)" mode), the data I get in the notifications is not 36 bytes as expected, but only 20 bytes. After converting the 20 bytes that I do get to numbers, it looks like I get a timestamp (uint32) and 4 chunks of quaternion data (each a 32-bit float for quaternion W, X, Y, and Z). When I write my enable message b'\x01\x01\x02' to the Control Characteristic, I also read it back to ensure that it was written properly, and it does read b'\x01\x01\x02' like I expect.

Another source of confusion is that when I get a notification with some sensor data, the notification says it was sent from handle 39 (the handle for the medium payload length characteristic), and yet the data I am getting is supposed to be sent from the short payload length characteristic, which should have a handle of 43.

Is there another step to enabling these sensors and setting the measurement mode that I am missing? My current understanding is outlined in Issue #7 and is copied below:

1. Scan for the sensor (can skip this if you already know the Bluetooth address)
2. Connect to the sensor using the Bluetooth address found via scanning
3. Subscribe to the Measurement Characteristic by writing an enable message to that characteristic's CCCD, which is at integer handle + 1 (e.g. if the characteristic's handle is 39, write to its CCCD at handle 40) (There are two measurement characteristics to choose from for Xsens DOTs, depending on whether your measurement type is a short or medium payload)
4. Write an enable message to the Control Characteristic
5. Add a delegate to your sensor to start listening for notifications from the sensor
6. Run a loop to listen for notifications and do something with the data received. (The example below just prints it.)

Thanks for your help.

I am getting the following error on Raspberry Pi while trying to start the latest version of the server. Previous versions of the server worked fine on this Pi running the same version of Raspberry Pi OS. I ran npm install and sudo npm install again to troubleshoot, but they didn't fix the issue.

$ sudo node xsensDotServer
module.js:549
    throw err;
    ^

Error: Cannot find module '../build/Release/binding.node'
    at Function.Module._resolveFilename (module.js:547:15)
    at Function.Module._load (module.js:474:25)
    at Module.require (module.js:596:17)
    at require (internal/module.js:11:18)
    at Object.<anonymous> (/home/pi/Documents/ANS-Lab/xsens_dot_server/node_modules/bluetooth-hci-socket/lib/native.js:3:15)
    at Module._compile (module.js:652:30)
    at Object.Module._extensions..js (module.js:663:10)
    at Module.load (module.js:565:32)
    at tryModuleLoad (module.js:505:12)
    at Function.Module._load (module.js:497:3)

Specs:
node -v = v8.11.1
Raspberry Pi 3 Model B+
1 GB RAM
Raspberry Pi OS (Raspbian), Version: May 2020, Kernel: 4.19

This is what happens:

➜ xsens_dot_server git:(master) node xsensDotServer
Web GUI Handler instantiated
BLE Handler started.
Webserver listening on port 8080, IP address: 172.16.75.209
(node:54458) Warning: N-API is an experimental feature and could change at any time.
[1] 54458 abort node xsensDotServer

How do I figure out what's the problem?

When I run node xsensDotServer, node throws an error that it can't find the noble_mac module. I am using macOS Catalina (10.15.5).

$ node xsensDotServer
module.js:540
    throw err;
    ^

Error: Cannot find module '../native/noble_mac'
    at Function.Module._resolveFilename (module.js:538:15)
    at Function.Module._load (module.js:468:25)
    at Module.require (module.js:587:17)
    at require (internal/module.js:11:18)
    at Object.<anonymous> (/Users/user123/Documents/ANS-Lab/xsens_dot_server/node_modules/noble-mac/lib/binding.js:4:18)
    at Module._compile (module.js:643:30)
    at Object.Module._extensions..js (module.js:654:10)
    at Module.load (module.js:556:32)
    at tryModuleLoad (module.js:499:12)
    at Function.Module._load (module.js:491:3)

Running npm install right before that produces no errors, but some warnings. Here is the output of that.

$ npm install

> @abandonware/[email protected] install /Users/user123/Documents/ANS-Lab/xsens_dot_server/node_modules/@abandonware/noble
> node-gyp rebuild

  CC(target) Release/obj.target/nothing/../../node-addon-api/src/nothing.o
  LIBTOOL-STATIC Release/nothing.a
  CXX(target) Release/obj.target/binding/lib/mac/src/noble_mac.o
  CXX(target) Release/obj.target/binding/lib/mac/src/napi_objc.o
  CXX(target) Release/obj.target/binding/lib/mac/src/ble_manager.o
  CXX(target) Release/obj.target/binding/lib/mac/src/objc_cpp.o
  CXX(target) Release/obj.target/binding/lib/mac/src/callbacks.o
  SOLINK_MODULE(target) ../lib/mac/native/binding.node
  COPY Release/binding.node
  SOLINK_MODULE(target) Release/noble.node
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: @abandonware/bluetooth-hci-socket@^0.5.3-5 (node_modules/@abandonware/noble/node_modules/@abandonware/bluetooth-hci-socket):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for @abandonware/[email protected]: wanted {"os":"linux,android,freebsd,win32","arch":"any"} (current: {"os":"darwin","arch":"x64"})
npm WARN [email protected] requires a peer of bufferutil@^4.0.1 but none is installed. You must install peer dependencies yourself.
npm WARN [email protected] requires a peer of utf-8-validate@^5.0.2 but none is installed. You must install peer dependencies yourself.
npm WARN [email protected] No repository field.
npm WARN [email protected] No license field.
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: [email protected] (node_modules/noble/node_modules/bluetooth-hci-socket):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for [email protected]: wanted {"os":"linux,android,win32","arch":"any"} (current: {"os":"darwin","arch":"x64"})

added 2 packages in 20.497s

Should I install the optional dependencies? Thanks for your help.

Hi All,

I have recreated this repo and have it running on a raspberry pi zero W with latest versions of dependencies

https://github.com/mcrooks83/rs-sensor-server

(thanks to RobertoRoos for the dockerfile inspiration)

Hi, I am currently running Xsens DOT Server on Raspberry Pi 4B. There are a few issues that I have encountered and I wonder if they have been resolved yet.

1. I am able to scan and connect to 5 sensors with the web server. When I start Xsens DOT Server and begin collecting data in the first time, all 5 Xsens DOT sensors successfully connect to the server, synchronize, and stream data back to the Xsens DOT Server on Raspberry Pi. However, when I click "Stop Logging" to terminate the session, and then "Start Logging" again, only 2 or 3 Xsens DOT sensors (sometimes only 1 DOT sensor) are successfully synched, and the Server gets stuck at waiting for "Successful synchronization" from all 5 sensors. This issue happens very regularly. In order to avoid the issue, I have to disconnect all 5 sensors from the current Xsens DOT Server session, close Xsens DOT Server, use the Xsens DOT App on my iPhone to connect and deactivate Sync on those sensors. After that, I can begin a new Xsens DOT Server session as before. The sensors are updated the latest firmware version. Please let me know if this issue has been addressed.

2. When connecting multiple sensors for data collection, the sampling frequencies of the sensors are sometimes different. For example, in a collected data set of 3 DOTs, two of them run at 60 Hz and the other one runs at 30 Hz (half of the total received packets of each of the other two). Has anyone encountered this issue?

Thank you all in advance!

Hello,

I tried to use xsens_dot_server on an my new demo computer with the following configuration
Intel Next Unit of Computing Kit NUC8i3BEK - Barebone - mini PC -
1 x Core i3 8109U / 3 GHz - RAM 0 Go - Iris Plus Graphics 655 -
GigE - LAN sans fil: 802.11a/b/g/n/ac, Bluetooth 5.0
Where I installed Ubuntu version 20.04LTS.

Starting the server is ok but when I'm going at localhost:8080, and I'm starting for looking for device, I get nothing.

I tried to disable the BLE 5.0 and use a dongle 4.0 and it is working (but unable to get more than 5 sensors connected at the same time).

I'm guessing that the issue is coming from the BLE connection but I don't know why?
(I'm currently developing a software using QT and encounter an issue on this computer because I had multi deconnection/reconnection of the sensors that I never get in my personal laptop so I wanted to try your developed application an see if it is working or not).

Regards,
Mélaine

Can we able to upgrade dots using raspberry pi ? let me know if any alternative method.

Best Regards
Naveen Kumar
NxtQ Pvt Ltd

Hi,

I want to receive the raw acceleration, angular velocity and euler angle at the same time which is not include in the six modes.
However, I have no idea about how to to send the control message to the sensors to let it know what kind of message need to be collected.

Has anyone experienced a similar issue and was able to solve this problem?

Best Regards,

Hello!

I have been running the server several times without any issue, however, today when I wanted to run it again I got the following error:

xsens_dot_server>node xsensDotServer
Web GUI Handler instantiated
BLE Handler started.
Webserver listening on port 8080, IP address: 10.10.64.131
internal/buffer.js:75
    throw new ERR_BUFFER_OUT_OF_BOUNDS();
    ^

RangeError [ERR_BUFFER_OUT_OF_BOUNDS]: Attempt to access memory outside buffer b
ounds
←[90m    at boundsError (internal/buffer.js:75:11)←[39m
←[90m    at Buffer.readUInt8 (internal/buffer.js:243:5)←[39m
    at Hci.processCmdCompleteEvent (C:\Users\iria\xsens_dot_server\node_modules\
←[4mnoble←[24m\lib\hci-socket\hci.js:566:25)
    at Hci.onSocketData (C:\Users\iria\xsens_dot_server\node_modules\←[4mnoble←[
24m\lib\hci-socket\hci.js:461:12)
←[90m    at BluetoothHciSocket.emit (events.js:310:20)←[39m
    at BluetoothHciSocket.onHciEventEndpointData (C:\Users\iria\xsens_dot_server
\node_modules\←[4mbluetooth-hci-socket←[24m\lib\usb.js:156:10)
←[90m    at InEndpoint.emit (events.js:310:20)←[39m
    at Transfer.transferDone (C:\Users\iria\xsens_dot_server\node_modules\←[4mus
b←[24m\usb.js:441:9) {
  code: ←[32m'ERR_BUFFER_OUT_OF_BOUNDS'←[39m

I have not changed the network, device or sensors, neither the drivers nor any configuration from yesterday. Any ideas of how to solve it?

Thanks!

After cloning the code from Github, I went the folder xsens_dot_server.
When I install necessary packages using npm install, error occurs.
One critical thing is bluetooth_hci_socket cannot be not downloaded.
This is because of the following error:

node-pre-gyp WARN Tried to download(404): https://github.com/abandonware/node-bluetooth-hci-socket/releases/download/0.5.3-6/bluetooth_hci_socket-0.5.3-6-node-v72-win32-x64.tar.gz

This means that the download URL for bluetooth-hci-socket is not available anymore.

Hi,

I need to include raw acceleration (as in the rate quantities mode) in 1. measuring mode with quaternions, is it possible? If yes, can you please guide me to where I have to make the change?

Best regard

I am running the server and I am able to connect and disconnect from the sensors, but the logging doesn't seem to work. When I press the "start logging" button I see the 'synching, don't refresh" message and after it disappear nothing is going on, there are no logging files. What could be the issue here?

Error: Cannot find module 'bluetooth-hci-socket'
at Function.Module._resolveFilename (module.js:547:15)
at Function.Module._load (module.js:474:25)
at Module.require (module.js:596:17)
at require (internal/module.js:11:18)
at Object. (/home/raajshekhar/Documents/xsenx_d/xsens_dot_server/node_modules/noble/lib/hci-socket/hci.js:6:26)
at Module._compile (module.js:652:30)
at Object.Module._extensions..js (module.js:663:10)
at Module.load (module.js:565:32)
at tryModuleLoad (module.js:505:12)
at Function.Module._load (module.js:497:3)

Hello,

I am trying to connect multiple dots at same time using raspberry pi 4 model but unable to achieve this task. due to some issue, one sensor connect at a time and rest of the sensors continuously showing "stop connecting " in the GUI. let me how to rectify this problem.

Best Regards
R Naveen kumar
NXtQ Pvt Ltd

I was trying to run the DOT server from inside Docker to experiment with it, but I can't get it to run.
I made the following Dockerfile, based on the instructions for Raspberry Pi:

FROM node:16

# Prepare packages
RUN apt-get update -q && apt-get install -y bluetooth bluez libbluetooth-dev libudev-dev \
    build-essential libssl-dev

# Prepare NodeJS
RUN npm install -g n && \
    n 8.11.1

# Get code
RUN cd ~ && git clone https://github.com/xsens/xsens_dot_server.git

WORKDIR /root/xsens_dot_server

# Run application
RUN npm install

EXPOSE 8080

CMD ["node", "xsensDotServer"]

But upon running the container I get the output with the error:

Web GUI Handler instantiated
BLE Handler started.
Webserver listening on port 8080, IP address: 172.17.0.2
node: ../deps/uv/src/unix/poll.c:120: uv_poll_start: Assertion `!(((handle)->flags & (UV_CLOSING | UV_CLOSED)) != 0)' failed.

I have no experience with NodeJS or NPM, so I am at a loss here.

Hello,
I would like to install xsens dot server on Raspbian, but when I run npm install I get following error.
As a result, the xsensDotServer node does not work

> prebuild-install --verbose || node-gyp rebuild

prebuild-install info begin Prebuild-install version 5.3.6
prebuild-install info looking for cached prebuild @ /home/pi/.npm/_prebuilds/49134e-usb-v1.6.3-node-v57-linux-arm.tar.gz
prebuild-install http request GET https://github.com/tessel/node-usb/releases/download/v1.6.3/usb-v1.6.3-node-v57-linux-arm.tar.gz
prebuild-install http 404 https://github.com/tessel/node-usb/releases/download/v1.6.3/usb-v1.6.3-node-v57-linux-arm.tar.gz
prebuild-install WARN install No prebuilt binaries found (target=8.11.1 runtime=node arch=arm libc= platform=linux)
gyp ERR! configure error
gyp ERR! stack Error: Python executable "/usr/bin/python" is v3.9.2, which is not supported by gyp.
gyp ERR! stack You can pass the --python switch to point to Python >= v2.5.0 & < 3.0.0.
gyp ERR! stack     at PythonFinder.failPythonVersion (/usr/local/lib/node_modules/npm/node_modules/node-gyp/lib/configure.js:492:19)
gyp ERR! stack     at PythonFinder.<anonymous> (/usr/local/lib/node_modules/npm/node_modules/node-gyp/lib/configure.js:474:14)
gyp ERR! stack     at ChildProcess.exithandler (child_process.js:267:7)
gyp ERR! stack     at emitTwo (events.js:126:13)
gyp ERR! stack     at ChildProcess.emit (events.js:214:7)
gyp ERR! stack     at maybeClose (internal/child_process.js:925:16)
gyp ERR! stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:209:5)
gyp ERR! System Linux 5.15.61-v7l+
gyp ERR! command "/usr/local/bin/node" "/usr/local/lib/node_modules/npm/node_modules/node-gyp/bin/node-gyp.js" "rebuild"
gyp ERR! cwd /home/pi/xsens_dot_server/node_modules/usb
gyp ERR! node -v v8.11.1
gyp ERR! node-gyp -v v3.6.2
gyp ERR! not ok

ERROR: component 'SensorServer' received unexpected event 'startScanning' in state 'Powering-on'

I have not been able to update the firmware in the sensors using the app, and have requested help with that via email. I was wondering if using the Dot Server would somehow solve this issue but I can not even recognize the sensors using the setup instructions provided.

I followed the steps to setup the DOT sensors for the raspberry pi 4. Setup went without errors; DOT server is running; I am able to scan and sellect the DOTs on the localhost page. When I sellect a dot and want to start logging (and press "start logging") all seems to be working fine. A log file is generated... but, besides the headers the log files do not contain data from the DOTs. Is this a known issue?

Hi
I am trying to install and run Xsens Dot Server in a Raspberry 4B (with Raspberry OS bullseye).
When I run the program:

sudo node xsensDotServer

I get this error:

Web GUI Handler instantiated
module.js:549
    throw err;
    ^

Error: Cannot find module 'bluetooth-hci-socket'
    at Function.Module._resolveFilename (module.js:547:15)
    at Function.Module._load (module.js:474:25)
    at Module.require (module.js:596:17)
    at require (internal/module.js:11:18)
    at Object.<anonymous> (/home/armtracker/xsens_server/xsens_dot_server/node_modules/noble/lib/hci-socket/hci.js:6:26)
    at Module._compile (module.js:652:30)
    at Object.Module._extensions..js (module.js:663:10)
    at Module.load (module.js:565:32)
    at tryModuleLoad (module.js:505:12)
    at Function.Module._load (module.js:497:3)

Any idea on how to fix this ? I guess that some library is missing or was not installed correctly (I got several deprecation warnings through the installation process and other warnings), but I don't know how to debug this. Any help will be appreciated.

Thanks in advance

Hi ,

I am planning to connect 15 dots using raspberry pi 4 model , can we able to connect? if yes , please let me how to do this.

Best regards
Naveen kumar
NxtQ Pvt Ltd

Hello,

I've been trying to connect the xsens dot to the webapp server unsuccessfully. I'm able to scan the sensors successfully. But I haven't managed to connect them all. Only once I was able to connect 1 sensor but then when I clicked in the button to gather data, the server app didn't react.

I'm running this in a windows 10 computer

Have you encountered this problem? If yes, how did you solve it?

Thank you

Hello,

I bought a set of xsens dot sensors previous week and I'm trying to use your application to validate the data.
I tried first on ubuntu then on windows but I'm getting the same issues on both :

• Connection ok
• Start recording .... a file is generated but without data (I only have the header.

I used 2 bluetooth test : default one from my computer inter ble 4.1 and I also bought a asus-bt500 dongle to get ble 5.0. Same result with both

Do you have any idea what could be the cause?

Thank you for your help and work
Best regards,
Mélaine

Hello,

I'm trying unsuccessfuly to set a new device tag in the device control characteristics. Using python and Bleak library, I'm able to connect to a dot, to set filter profile index and output rate but when I set a new tag with corresponding tag length changes are not taken into account and no error is thrown.
For that, I create a 16bytes array, write new tag to the first n bytes encoded in ascii and then add it to the reste of message (before adding output_rate, filter_profile_idx and reserved data). When i look at the generated bytes message it's looks like good but it is changing neither the tag length neither the tag.

Any idea ?

Antoine

I get the error: "ERROR: component 'SensorServer' received unexpected event 'startScanning' in state 'Powering-on'" when starting scanning for the sensors. Can you help me solve this?

I am trying to use dot server on windows 10. I followed installation instructions only changed this : npm install --global windows-build-tools**@4.0.0** because original command was stuck at "Still waiting for installer log file..."

but when running npm install it ends up with this error :

npm install
npm WARN deprecated [email protected]: Debug versions >=3.2.0 <3.2.7 || >=4 <4.3.1 have a low-severity ReDos regression when used in a Node.js environment. It is recommended you upgrade to 3.2.7 or 4.3.1. (debug-js/debug#797)
npm WARN deprecated [email protected]: Please upgrade to @mapbox/node-pre-gyp: the non-scoped node-pre-gyp package is deprecated and only the @mapbox scoped package will recieve updates in the future
npm ERR! code ENOENT
npm ERR! syscall spawn git
npm ERR! path git
npm ERR! errno ENOENT
npm ERR! enoent Error while executing:
npm ERR! enoent undefined ls-remote -h -t https://github.com/Timeular/noble-mac.git
npm ERR! enoent
npm ERR! enoent
npm ERR! enoent spawn git ENOENT
npm ERR! enoent This is related to npm not being able to find a file.
npm ERR! enoent

npm ERR! A complete log of this run can be found in:

Have anyone experienced this ?

Antoine

Hello fellas,

So, I’ve been running the code on several computers, all with the same OS (Windows 10). At first, all of them worked fine with one sensor at a time.
Recently however, on one of the computers, the code runs well with node xsensDotServer but throw this error when I start scanning, the console throw the error
ERROR: component "SensorServer" received unexpected event "startScanning" in state "Powering-on"
I’ve tried reinstalling xSensDotServer and then Node.js, the same error appeared. I also launched other instances of the software, modified to be compatible with other softwares I use (but working too, even on other PCs), and it threw the same error.

Any idea of the problem, or any question about something I should have specified?

Thanks all

I'm trying to install the Xsens DOT server on a Mac running Catalina (10.15.5). Looks like some node modules are not being found, causing the install to fail. Where can I find the node-addon-api and napi-thread-safe-callback modules?

Output from npm install:

$ npm install

> @abandonware/[email protected] install /Users/user123/Documents/ANS Lab/xsens_dot_server/node_modules/@abandonware/noble
> node-gyp rebuild

  CC(target) Release/obj.target/nothing/../../node-addon-api/src/nothing.o
  LIBTOOL-STATIC Release/nothing.a
  CXX(target) Release/obj.target/binding/lib/mac/src/noble_mac.o
clang: error: no such file or directory: 'Lab/xsens_dot_server/node_modules/node-addon-api'
clang: error: no such file or directory: 'Lab/xsens_dot_server/node_modules/napi-thread-safe-callback'

After that, there is more error output where make and node-gyp fail. See below for full output.

Here is the version info for node:

$ node -v
v8.9.4
$ node-gyp -v
v7.0.0

Full output for error:

$ npm install

> @abandonware/[email protected] install /Users/forte/Documents/ANS Lab/xsens_dot_server/node_modules/@abandonware/noble
> node-gyp rebuild

  CC(target) Release/obj.target/nothing/../../node-addon-api/src/nothing.o
  LIBTOOL-STATIC Release/nothing.a
  CXX(target) Release/obj.target/binding/lib/mac/src/noble_mac.o
clang: error: no such file or directory: 'Lab/xsens_dot_server/node_modules/node-addon-api'
clang: error: no such file or directory: 'Lab/xsens_dot_server/node_modules/napi-thread-safe-callback'
make: *** [Release/obj.target/binding/lib/mac/src/noble_mac.o] Error 1
gyp ERR! build error 
gyp ERR! stack Error: `make` failed with exit code: 2
gyp ERR! stack     at ChildProcess.onExit (/usr/local/lib/node_modules/npm/node_modules/node-gyp/lib/build.js:258:23)
gyp ERR! stack     at emitTwo (events.js:126:13)
gyp ERR! stack     at ChildProcess.emit (events.js:214:7)
gyp ERR! stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:198:12)
gyp ERR! System Darwin 19.5.0
gyp ERR! command "/usr/local/bin/node" "/usr/local/lib/node_modules/npm/node_modules/node-gyp/bin/node-gyp.js" "rebuild"
gyp ERR! cwd /Users/forte/Documents/ANS Lab/xsens_dot_server/node_modules/@abandonware/noble
gyp ERR! node -v v8.9.4
gyp ERR! node-gyp -v v3.6.2
gyp ERR! not ok 
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: @abandonware/bluetooth-hci-socket@^0.5.3-5 (node_modules/@abandonware/noble/node_modules/@abandonware/bluetooth-hci-socket):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for @abandonware/[email protected]: wanted {"os":"linux,android,freebsd,win32","arch":"any"} (current: {"os":"darwin","arch":"x64"})
npm WARN [email protected] requires a peer of bufferutil@^4.0.1 but none is installed. You must install peer dependencies yourself.
npm WARN [email protected] requires a peer of utf-8-validate@^5.0.2 but none is installed. You must install peer dependencies yourself.
npm WARN [email protected] No repository field.
npm WARN [email protected] No license field.
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: [email protected] (node_modules/noble/node_modules/bluetooth-hci-socket):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for [email protected]: wanted {"os":"linux,android,win32","arch":"any"} (current: {"os":"darwin","arch":"x64"})

npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! @abandonware/[email protected] install: `node-gyp rebuild`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the @abandonware/[email protected] install script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/forte/.npm/_logs/2020-06-25T22_24_17_104Z-debug.log

Hi

I connect all 5 sensors using raspberry pi 4 model , but unable to get the log files from all dots at same time. some time this issue is coming for me . not all the time. once i restart the pi then it will work properly , after 5 to 6 min it will go to same state , automatically out of 5 one dot is disconnecting . please let me know how to solve this problem.

Best regards
Naveen kumar
NxtQ Pvt Ltd

I followed all the instructions but I still cannot connect to the server

When I click start scanning, my sensor does not show up on the web browser. I have already restarted my device and reinstalled drivers. Any help would be appreciated.

Hi there,
I'm new to development so please forgive me if this is a dumb question - I have followed the instructions to install and run the xsens dot server and I am getting the error below (all output is included). Please let me know how to troubleshoot. Thank you!

C:\Users\mkamachi\xsens_dot_server>node xsensDotServer
Web GUI Handler instantiated
BLE Handler started.
Webserver listening on port 8080, IP address: 192.168.1.80
C:\Users\mkamachi\xsens_dot_server\node_modules\noble\lib\hci-socket\hci.js:582
this.address = result.toString('hex').match(/.{1,2}/g).reverse().join(':');
^

TypeError: Cannot read property 'reverse' of null
at Hci.processCmdCompleteEvent (C:\Users\mkamachi\xsens_dot_server\node_modules\noble\lib\hci-socket\hci.js:582:59)
at Hci.onSocketData (C:\Users\mkamachi\xsens_dot_server\node_modules\noble\lib\hci-socket\hci.js:461:12)
at BluetoothHciSocket.emit (events.js:310:20)
at BluetoothHciSocket.onHciEventEndpointData (C:\Users\mkamachi\xsens_dot_server\node_modules\bluetooth-hci-socket\lib\usb.js:156:10)
at InEndpoint.emit (events.js:310:20)
at Transfer.transferDone (C:\Users\mkamachi\xsens_dot_server\node_modules\usb\usb.js:441:9)

I saw that the README has an option to use a Raspberry Pi 4 Model B run the server. For documentation purposes, I installed it on my Raspberry Pi 3 Model B+ and ran it without issue. Server starts up, connects to sensors, and logs data just fine.

Specs:
Raspberry Pi 3 Model B+
1 GB RAM
Raspberry Pi OS (Raspbian), Version: May 2020, Kernel: 4.19

Hi, I am trying to connect to the Xsens DOTs using Python and Bluepy. I have a general question about enabling and receiving notifications from the Xsens DOTs. Am I correct that to get accel/gyro data out of the sensor, I have to write an enable message to the Control Characteristic (b\x01\x01\02 for example), then one of the measurement characteristics (short/medium payload, etc.) will send out notification packets with sensor data?

I am able to connect to and write to the control characteristic of an Xsens DOT sensor from my Python script but am having trouble getting notifications. Do I have the general idea of getting sensor data correct?

Thanks.

I'm using RPi 4. On the browser GUI, I can start scanning and it does find the sensors. When I select Connect, however, it does not connect to the any of the sensors. I'm not getting any error messages.

Hi

I am working with raspberry pi along with dots. practically I noticed that I couldn't get log file above 15 meter from the raspberry pi . If we integrate raspberry pi with external antenna can we able to achieve Better range (expected 100 mtr)? If yes please suggest good antenna for raspberry pi or please let me know if any other suggestions to improve the range.

Best regards
Naveen Kumar
NxtQ Pvt LTD

• OS name: Microsoft Windows 10 Home Chinese Version

• OS version: 10.0.19043 Not available Build 19043

• OS manufacturer: Microsoft Corporation

• Bluetooth version: LMP 8.4096 Bluetooth 4.2

Install the following tools

conda create -n XsensDotServe python=3.8.3

• I have successfully registered npm and node-gyp
• An error occurs when I run Windows-build-tools in CMD as administrator

npm WARN deprecated [email protected]: request has been deprecated, see
https://github.com/request/request/issues/3142
npm WARN deprecated [email protected]: this library is no longer supported
npm WARN rollback Rolling back [email protected] failed (this is probably
harmless): EBUSY: resource busy or locked, rmdir
'C:\Users\openmind\AppData\Roaming\npm\node_modules\windows-build-tools'
npm ERR! code EBUSY
npm ERR! syscall rename
npm ERR! path C:\Users\openmind\AppData\Roaming\npm\node_modules\windowsbuild-tools
npm ERR! dest C:\Users\openmind\AppData\Roaming\npm\node_modules\.windowsbuild-tools.DELETE
npm ERR! errno -4082
npm ERR! EBUSY: resource busy or locked, rename
'C:\Users\openmind\AppData\Roaming\npm\node_modules\windows-build-tools' ->
'C:\Users\openmind\AppData\Roaming\npm\node_modules\.windows-buildtools.DELETE'
npm ERR! A complete log of this run can be found in:
npm ERR! C:\Users\openmind\AppData\Roaming\npm-cache\_logs\2021-09-
04T03_36_56_161Z-debug.log

Is windows-build-Tools not working?

I successfully registered with Zadig

Set Up on Windows

I have cloned the repository and have successfully registered NPM when I run NPM Install

npm WARN xsens_dot_server@1.0.0 No repository field.
npm WARN xsens_dot_server@1.0.0 No license field.
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: xpc-connection@0.1.4
(node_modules\xpc-connection):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for xpcconnection@0.1.4: wanted {"os":"darwin","arch":"any"} (current:
{"os":"win32","arch":"x64"})
audited 212 packages in 2.75s
3 packages are looking for funding
run `npm fund` for details
found 11 vulnerabilities (1 low, 10 high)
run `npm audit fix` to fix them, or `npm audit` for details

• Run Xsens Dot Server

Web GUI Handler instantiated
Webserver listening on port 8080, IP address: 192.168.31.72
1
2
E:\Workspace\xsensdot\xsens_dot_server\node_modules\bluetooth-hcisocket\lib\usb.js:70
throw new Error('No compatible USB Bluetooth 4.0 device found!');
^
Error: No compatible USB Bluetooth 4.0 device found!
at BluetoothHciSocket.bindUser
(E:\Workspace\xsensdot\xsens_dot_server\node_modules\bluetooth-hcisocket\lib\usb.js:70:11)
at BluetoothHciSocket.bindRaw
(E:\Workspace\xsensdot\xsens_dot_server\node_modules\bluetooth-hcisocket\lib\usb.js:28:8)
at Hci.init (E:\Workspace\xsensdot\xsens_dot_server\node_modules\noble\lib\hcisocket\hci.js:101:35)
at NobleBindings.init
(E:\Workspace\xsensdot\xsens_dot_server\node_modules\noble\lib\hcisocket\bindings.js:82:13)
at processTicksAndRejections (internal/process/task_queues.js:79:11)
(XsensDotServe) PS E:\Workspace\xsensdot\xsens_dot_server> npm install
npm WARN xsens_dot_server@1.0.0 No repository field.
npm WARN xsens_dot_server@1.0.0 No license field.
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: xpc-connection@0.1.4
(node_modules\xpc-connection):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for xpcconnection@0.1.4: wanted {"os":"darwin","arch":"any"} (current:
{"os":"win32","arch":"x64"})
audited 212 packages in 2.75s
3 packages are looking for funding
run `npm fund` for details
found 11 vulnerabilities (1 low, 10 high)
run `npm audit fix` to fix them, or `npm audit` for details