I am using VMWare Workstation since I dont have a Pi 4 and they are very hard to come by right now. I am running latest Pi OS; was able to download the CEP packages with success and Desktop rebooted.

I am able to SSH into the Pi so I believe that confirms we are on the same LAN and able to access the Pi. However, every time I run:

http://<raspberry_pi_hostname>.local/setup

I get an error "Connection was Reset". Tried on Chrome and Edge browsers. Any idea why I cant access the setup site, do I need to run any commands on the Pi desktop to trigger it to act like server?

Thanks!

Hello,

I am trying to complete the setup by retrieving the device information.

Actual Result: On front end the screen is showing the loading sign.

On Backend:

oot : PWD=/home/pi/Desktop/Cortic/cep/src/cait/cortic_webapp ; USER=root ; COMMAND=/usr/sbin/iwgetid Mar 16 12:18:01 raspberrypi sudo[26701]: pam_unix(sudo:session): session opened for user root(uid=0) by (uid=0) Mar 16 12:18:01 raspberrypi sudo[26701]: pam_unix(sudo:session): session closed for user root Mar 16 12:18:01 raspberrypi bash[383]: ERROR:main:Exception on /getwifi [GET] Mar 16 12:18:01 raspberrypi bash[383]: Traceback (most recent call last): Mar 16 12:18:01 raspberrypi bash[383]: File "/usr/local/lib/python3.9/dist-packages/wifi/scan.py", line 38, in all Mar 16 12:18:01 raspberrypi bash[383]: iwlist_scan = subprocess.check_output(['/sbin/iwlist', interface, 'scan'], Mar 16 12:18:01 raspberrypi bash[383]: File "/usr/lib/python3.9/subprocess.py", line 424, in check_output Mar 16 12:18:01 raspberrypi bash[383]: return run(*popenargs, stdout=PIPE, timeout=timeout, check=True, Mar 16 12:18:01 raspberrypi bash[383]: File "/usr/lib/python3.9/subprocess.py", line 528, in run Mar 16 12:18:01 raspberrypi bash[383]: raise CalledProcessError(retcode, process.args, Mar 16 12:18:01 raspberrypi bash[383]: subprocess.CalledProcessError: Command '['/sbin/iwlist', 'wlan0', 'scan']' returned non-zero exit status 255. Mar 16 12:18:01 raspberrypi bash[383]: During handling of the above exception, another exception occurred: Mar 16 12:18:01 raspberrypi bash[383]: Traceback (most recent call last): Mar 16 12:18:01 raspberrypi bash[383]: File "/usr/lib/python3/dist-packages/flask/app.py", line 2447, in wsgi_app Mar 16 12:18:01 raspberrypi bash[383]: response = self.full_dispatch_request() Mar 16 12:18:01 raspberrypi bash[383]: File "/usr/lib/python3/dist-packages/flask/app.py", line 1952, in full_dispatch_request Mar 16 12:18:01 raspberrypi bash[383]: rv = self.handle_user_exception(e) Mar 16 12:18:01 raspberrypi bash[383]: File "/usr/local/lib/python3.9/dist-packages/flask_cors/extension.py", line 165, in wrapped_function Mar 16 12:18:01 raspberrypi bash[383]: return cors_after_request(app.make_response(f(*args, **kwargs))) Mar 16 12:18:01 raspberrypi bash[383]: File "/usr/lib/python3/dist-packages/flask/app.py", line 1821, in handle_user_exception Mar 16 12:18:01 raspberrypi bash[383]: reraise(exc_type, exc_value, tb) Mar 16 12:18:01 raspberrypi bash[383]: File "/usr/lib/python3/dist-packages/flask/_compat.py", line 39, in reraise Mar 16 12:18:01 raspberrypi bash[383]: raise value Mar 16 12:18:01 raspberrypi bash[383]: File "/usr/lib/python3/dist-packages/flask/app.py", line 1950, in full_dispatch_request Mar 16 12:18:01 raspberrypi bash[383]: rv = self.dispatch_request() Mar 16 12:18:01 raspberrypi bash[383]: File "/usr/lib/python3/dist-packages/flask/app.py", line 1936, in dispatch_request Mar 16 12:18:01 raspberrypi bash[383]: return self.view_functionsrule.endpoint Mar 16 12:18:01 raspberrypi bash[383]: File "/home/pi/Desktop/Cortic/cep/src/cait/cortic_webapp/main.py", line 180, in getwifi Mar 16 12:18:01 raspberrypi bash[383]: cells = list(Cell.all("wlan0")) Mar 16 12:18:01 raspberrypi bash[383]: File "/usr/local/lib/python3.9/dist-packages/wifi/scan.py", line 41, in all Mar 16 12:18:01 raspberrypi bash[383]: raise InterfaceError(e.output.strip()) Mar 16 12:18:01 raspberrypi bash[383]: wifi.exceptions.InterfaceError: b"wlan0 Interface doesn't support scanning : Device or resource busy" Mar 16 12:18:01 raspberrypi bash[383]: 172.19.96.157 - - [16/Mar/2022 12:18:01] "GET /getwifi HTTP/1.1" 500 - Mar 16 12:18:01 raspberrypi bash[383]: INFO:werkzeug:172.19.96.157 - - [16/Mar/2022 12:18:01] "GET /getwifi HTTP/1.1" 500 - Mar 16 12:18:01 raspberrypi bash[383]: 172.19.96.157 - - [16/Mar/2022 12:18:01] "GET /isconnected HTTP/1.1" 200 - Mar 16 12:18:01 raspberrypi bash[383]: INFO:werkzeug:172.19.96.157 - - [16/Mar/2022 12:18:01] "GET /isconnected HTTP/1.1" 200 - Mar 16 12:18:02 raspberrypi sudo[26710]: root : PWD=/home/pi/Desktop/Cortic/cep/src/cait/cortic_webapp ; USER=root ; COMMAND=/usr/sbin/iwgetid Mar 16 12:18:02 raspberrypi sudo[26710]: pam_unix(sudo:session): session opened for user root(uid=0) by (uid=0) Mar 16 12:18:02 raspberrypi sudo[26710]: pam_unix(sudo:session): session closed for user root

Environment informaiton: Raspberrypi 4B OS: 32 bit

Hi

I am trying to setup CAIT on my raspberry pi model 4 8 GB with 64 bit OS.

Ran the setup.sh to install pre-requisites.

Now when i am trying to run the setup; the page is unable to detect OAK-D camera. I have installed DepthAI pre-requisites and ran Age & Gender demo and its running successfully.

Below is the setup page with Devtools;

here's the OAK-D camera which is functioning well;

below is the lsusb command result;

how do i complete the setup?

thanks rex

Hello, First of all I would like to thank you for this excellent work. In fact, I am trying to connect to http://raspberrypi.local/programming. I enter the username pi and the password and it shows me The username does not exist! Thanks in advance.

Hello

I followed the instructions to install cep, from your github page, followed by the Respeak driver (although I am not using the mic). Everything seemed to install without issue the pi rebooted but when I try to go to http://raspberrypi.local/setup it says this site can’t be reached.

My setup is as follows: Raspberry Pi 4 4gb model 64Gb sd card fresh install 32 bit bullseye (this is the first thing I am doing on this fresh OS) Offical raspberry pi dsi screen Oak-d lite

As there are no error messages or faults I have nothing to use to troubleshoot the issue.

Any help would be gratefully received.

Thanks, also posted on the cortic technologies web forum but no responses as yet so thought I would try here too.

The setup page of CAIT remains in an infinite loop on message "Retreiving device information ..."

The only AJAX Request in error is the /getwifi page.

There is the following message in syslog

Feb  9 20:28:16 raspberrypi bash[467]: ERROR:flask.app:Exception on /getwifi [GET]
Feb  9 20:28:16 raspberrypi bash[467]: Traceback (most recent call last):
Feb  9 20:28:16 raspberrypi bash[467]:   File "/usr/local/lib/python3.7/dist-packages/wifi/scan.py", line 39, in all
Feb  9 20:28:16 raspberrypi bash[467]:     stderr=subprocess.STDOUT)
Feb  9 20:28:16 raspberrypi bash[467]:   File "/usr/lib/python3.7/subprocess.py", line 395, in check_output
Feb  9 20:28:16 raspberrypi bash[467]:     **kwargs).stdout
Feb  9 20:28:16 raspberrypi bash[467]:   File "/usr/lib/python3.7/subprocess.py", line 487, in run
Feb  9 20:28:16 raspberrypi bash[467]:     output=stdout, stderr=stderr)
Feb  9 20:28:16 raspberrypi bash[467]: subprocess.CalledProcessError: Command '['/sbin/iwlist', 'wlan0', 'scan']' returned non-zero exit status 255.
Feb  9 20:28:16 raspberrypi bash[467]: During handling of the above exception, another exception occurred:
Feb  9 20:28:16 raspberrypi bash[467]: Traceback (most recent call last):
Feb  9 20:28:16 raspberrypi bash[467]:   File "/usr/lib/python3/dist-packages/flask/app.py", line 2292, in wsgi_app
Feb  9 20:28:16 raspberrypi bash[467]:     response = self.full_dispatch_request()
Feb  9 20:28:16 raspberrypi bash[467]:   File "/usr/lib/python3/dist-packages/flask/app.py", line 1815, in full_dispatch_request
Feb  9 20:28:16 raspberrypi bash[467]:     rv = self.handle_user_exception(e)
Feb  9 20:28:16 raspberrypi bash[467]:   File "/usr/local/lib/python3.7/dist-packages/flask_cors/extension.py", line 165, in wrapped_function
Feb  9 20:28:16 raspberrypi bash[467]:     return cors_after_request(app.make_response(f(*args, **kwargs)))
Feb  9 20:28:16 raspberrypi bash[467]:   File "/usr/lib/python3/dist-packages/flask/app.py", line 1718, in handle_user_exception
Feb  9 20:28:16 raspberrypi bash[467]:     reraise(exc_type, exc_value, tb)
Feb  9 20:28:16 raspberrypi bash[467]:   File "/usr/lib/python3/dist-packages/flask/_compat.py", line 35, in reraise
Feb  9 20:28:16 raspberrypi bash[467]:     raise value
Feb  9 20:28:16 raspberrypi bash[467]:   File "/usr/lib/python3/dist-packages/flask/app.py", line 1813, in full_dispatch_request
Feb  9 20:28:16 raspberrypi bash[467]:     rv = self.dispatch_request()
Feb  9 20:28:16 raspberrypi bash[467]:   File "/usr/lib/python3/dist-packages/flask/app.py", line 1799, in dispatch_request
Feb  9 20:28:16 raspberrypi bash[467]:     return self.view_functions[rule.endpoint](**req.view_args)
Feb  9 20:28:16 raspberrypi bash[467]:   File "/home/pi/ia/cep/src/cait/cortic_webapp/main.py", line 180, in getwifi
Feb  9 20:28:16 raspberrypi bash[467]:     cells = list(Cell.all("wlan0"))
Feb  9 20:28:16 raspberrypi bash[467]:   File "/usr/local/lib/python3.7/dist-packages/wifi/scan.py", line 41, in all
Feb  9 20:28:16 raspberrypi bash[467]:     raise InterfaceError(e.output.strip())
Feb  9 20:28:16 raspberrypi bash[467]: wifi.exceptions.InterfaceError: b"wlan0     Interface doesn't support scanning : Device or resource busy"

When I run the command : iwlist wlan0 scan

There is no error :

wlan0     Scan completed :
          Cell 01 - Address: XX:XX:XX:XX:XX
                    Channel:6
                    Frequency:2.437 GHz (Channel 6)
                    Quality=70/70  Signal level=-31 dBm
                    Encryption key:on
                    ESSID:"XZ"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
                    ....

Hello,

First of all many thanks to you for replying all the previous quires. I am successfully able to connect with your programming interface and I really like it. However,m when I am trying to connect with OKD-camera and I not able to connect it successfully. I am trying to initial the vision with but it seems like option is not loading properly.

Can you please help me in this regard?

Many thanks to you!

First of all thank you for the great work you did implementing the CEP solution. After some tinkering I got it to work with an RPi /w CSI camera and a Lego Inventor Robot Kit. Your solution really is as much fun as it is educative and the interface is simply great.

However, after some tinkering I always arrive at a dead-end when initialization of the CSI camera will fail in during the setup of my program with the message "Initialization of vision failed. No CSI-Camera is detected, or connected device is not supported". At this point the camera preview on the setup screen also stops working. Camera and RPi are in a fixed setup, so there should not be any physical connection instabilities and work perfectly fine after the initial installation of CEP.

Rebooting the system or powering it off does not help. Once the issue happens I cannot recover the connection to the camera. I do believe the problem starts as soon as the setup phase of the program does fail once for any reason (e.g. the Lego Hub not being connected), but I am not certain.

Is there any solution to this problem or a feasible workaround? Can the camera setup be reset somehow?

I did check the camera connection using the Raspberry OS CommandLine-Tools and still-image as well as video work just fine. I did install the solution on the latest Raspberry OS Buster as CSI Camera Legacy mode in the most recent version caused issues.

Best regards, Tobias

s

Hi,

First of all thank you so much for the great work. We are trying to load the examples but unable to do so. These are the following steps we are following:

1. Click on Load button
2. A window is open
3. We are getting error "Connect rest error and on networks files API is throwing error

From the images you can see that the API is getting fail.

I git clone the folder cd cep and then git checkout dev after that I am trying to run this command bash setup.sh and the setup is stuck. Kindly, help me out in this setup

Are you able to provide guidance on how I should approach extending docker module functionality?

I want to add some additional custom blocks to CAIT for vision processing. My understanding is that I should implement this functionality in vision module. I'm a little out of my depth with Docker but I'm guessing that I need to build a local docker image using the dockerfile and then look into extending the code under /src/curt/modules/vision.

I tried to build the docker image for vision but I ran into a couple of issues:

1. There were dependencies to packages libqtgui4, libqtwebkit4 and libqt4-test which could not be found. They were possibly deprecated. I commented those out to see if I can get it to work without those.
2. Building the vision image failed with the following message:

ERROR: Failed building wheel for depthai
ERROR: Could not build wheels for depthai which use PEP 517 and cannot be installed directly
WARNING: You are using pip version 21.2.4; however, version 22.0.4 is available.
You should consider upgrading via the '/usr/local/bin/python -m pip install --upgrade pip' command.
The command '/bin/sh -c pip3 install --extra-index-url https://artifacts.luxonis.com/artifactory/luxonis-python-snapshot-local/ depthai' returned a non-zero code: 1

When installing: Building wheel for crypt (PEP 517) ... error ERROR: Command errored out with exit status 1: command: /usr/bin/python3 /tmp/tmpxoa6ytoh_in_process.py build_wheel /tmp/tmpnxiyvpfg cwd:/tmp/pip-install-mw_pcpjn/bcrypt_4486499d7596497aaddf587cd8a22dc6 Complete output (58 lines): running bdist_wheel running build running build py creating build creating build/lib. linux-armv7l-cpython-39 creating build/lib. linux-armv7l-cpython-39/bcrypt copying src/berypt/ -• UY 3 build/Lib. linux-army?1-epython-39/berypt copying src/berypt/. init_ -> build/lib. linux-armv7l-cpython-39/bcrypt running egg_info writing src/bcrypt.egg-info/PKG-INFO writing dependency. writing top-level names to src/bcrypt.egg-info/top_level.txt reading manifest file 'src/bcrypt.egg-info/SOURCES.txt° reading manifest template 'MANIFEST.in' warning: no previously-included files found matching 'requirements.txt' warning: no previously-included files found matching 'release. py warning: no previously-included files found matching 'mypy.ini warning: no previously-included files matching found under directory warning: no previously-included files matching •* found under directory "src/_bcrypt/target® •github• writing manifest file "src/bcrypt.egg-info/SOURCES.txt copying src/bcrypt/_bcrypt.pyi

build/lib. linux-armv7l-cpython-39/bcrypt copying src/crypt/py.typed -> build/lib.linux-armv7l-cpython-39/bcrypt running build_ext running build_rust ===DEbUG ASSISIANCE== If you are seeing a compilation error please try the following steps to successfully install bcrypt:

1. Upgrade to the latest pip and try again. This will fix errors for most users. See: https://pip.pypa.io/en/stable/installing/#upgrading-pip
2. Ensure you have a recent Rust toolchain installed. crypt requires rustc >= 1.56.0 Python: 3.9.2 platform: Linux-5.15.76-v71+-armv7l-with-glibc2.31 pip: n/a setuptools:65.6.3 setuptools_rust: -5-2 rustcena ==DEBUG ASSISTANCE: error: can't find Rust compiler If you are using an outdated pip version, it is possible a prebuilt wheel is available for this package but pip is not able to install from it. Installing from the wheel would avoid the need for a Rust compiler. To update pip, run: pip install - -upgrade pip and then retry package installation. If you did intend to build this package from source, try installing a Rust compiler from your system package manager and ensure it is on the PATH during installation. Alternatively, rustup (available at https://ru. This package requires Rust >=1.56.0. ERROR: Failed building wheel for bcrypt Falled to. hullo PeTYP& whooLs for berypt which Use PEP 517 and cannot be installed directly

Therefore, I fresh a new system. I used Pip install --upgrade pip to the newest version. I used curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh to the newest version of rustup. Then I installed the cep, however the error still appears.

My setup is as follows: Raspberry Pi 4 8gb model 256Gb sd card fresh install 32 bit bullseye (this is the first thing I am doing on this fresh OS) Offical raspberry pi dsi screen Oak-d lite

Thank you very much.

@michaelhwn Can this be modified to support Mindstorms EV3 too? I guess CAIT is supported for EV3. How should I go about to integrate it with EV3 31313? I'm trying to use it with an OAK-D camera and a custom object detection model.

Thank you so much for your help! Hoping to hear back from you soon.

I've followed the instructions line by line. I've also installed fresh RaspberryPi sketch onto the SD card two times. I get as far as visiting raspberrypi.local/setup

Then I get the error: This site can’t be reachedCheck if there is a typo in raspberrypi.local. DNS_PROBE_FINISHED_NXDOMAIN

This happens on both the pi itself and when trying to access on any other machine on the network. I'm using DECO mesh WI-FI (not sure if this is impacting it). I've tried ethernet cable direct to router, with no difference.

Appreciate help getting this sorted.