General Discussion

@miwhfjxiiwawshrmet Hi, CEP doesn’t support this HAT. But you are welcome to contribute to the project by adding the support of this HAT to CEP’s control module.

Hi @filip , we have fixed this issue now, please perform the update steps again to pull the latest code from the dev branch. After this, the USB webcam or CSI camera should appear in the connected camera list on the Device setup page.

1. cd cep

2. git checkout dev

3. git pull

4. sudo reboot

Hi @filip, we will add support for CSI-camera (HQ camera) and USB webcam to CEP to support your use case. It is going to take us a few days. We will let you know when we have implemented this feature. This way you don't have to use our deprecated CAIT project. Please let me know if this is what you are looking for.

@Michael Ng that would be great. Thanks

Hi @filip, we have implemented support for the USB webcam and Pi's CSI camera into the latest dev branch of CEP. Please check it out and have a test. You can get the latest update by:

1. cd cep

2. git checkout dev

3. git pull

4. sudo reboot

Please note that the dev branch may contain bugs, feel free to reach out to us if you encounter any problems.

@filip I have received the log, thanks. I would like to get one more log from the Pi, please follow the steps below:

1. In Pi’s terminal type: sudo journalctl -u cait_webapp.service > /home/pi/cait_webapp.log

2. A log file called cait_webapp.log will be created under /home/pi, please send me this file.

Cheers,

Michael

@filip After looking into the logs, the reason has been identified, the following line in the log indicates that some packages are missing in the OS:

ImportError: libImath-2_2.so.23: cannot open shared object file: No such file or directory

A similar issue can be found in here: https://github.com/EdjeElectronics/TensorFlow-Object-Detection-on-the-Raspberry-Pi/issues/18

The solution to this problem is to install the missing packages by typing the following in the Pi’s terminal:

sudo apt-get install -y libilmbase-dev libopenexr-dev libgstreamer1.0-dev

After the installation is finished, please reboot the device and test again.

Can you also let me know which Raspberry OS you are using for the CEP? I would like to investigate further into this error, thanks.

Michael

Linux raspberrypi 5.10.63-v7l+ #1457 SMP Tue Sep 28 11:26:14 BST 2021 armv7l GNU/Linux

installed on SD card using 'Raspberry Image Manager" -> Raspberry OS Lite 32bit

@Michael Ng Have installed CAIT on that Pi for the moment but all three dropboxes were empty, nothing to select for microphone. I'll reinstall cep on another PI for a screenshot.

@Michael Ng

@filip We only observed this behaviour when the Pi just booted up. There is a set of services that the CEP needs to start once the device is booted up. When the services were not fully started, we did observe the dropdown boxes became empty. However, the dropdown boxes eventually got filled with device information when we waited on that page for some time (in our tests, the time we waited for was less than 5 minutes). For the sake of testing, can you please do the following?

1. Reboot the CEP device.

2. After the device is booted up, go to http://<hostname>/setup and browse to the device page.

3. If the dropdown boxes are empty, wait for 10 minutes and see if the device appears in the dropdown boxes.

@filip Does http://<hostname>.local/setup work in CAIT?

I know, but the OAK-D is more expensive... for just a bit more, I will have a 3-pack of OAK-D lites ;)

@Michael Ng No, says "connection refused" as well.