Please follow the instructions given here. https://github.com/cortictechnology/cait/wiki/1.1-LEGO-Mindstorms-Setup

That’s good to know. I will contact you by email from now on.

Oh, can you try rebooting the Raspberry Pi?

Hi John, we may have a fix for your freezing problem. It should be really fast for you to try it out. On your current CEP installation, do the following on the command line: cd cep git status (make sure you are in the test branch) git checkout test (if you are not already in the test branch) git pull Then, you can go to the visual programming interface on your web browser to try it out. At the top of the web page, you should see some text saying that it contains a fix for the freeze problem beside the version number. This is just to ensure you are running with the correct fix. Please let me know how it goes. Thanks

The freezing frame problem is kind of weird. We are trying to reproduce it over here. The yellow border you mentioned in the previous message is actually the correct behaviour. It indicates which block is currently being executed. Even though the display image may be frozen, the program is still running. If you look at the readme file from the CEP project, it tells you that you can go to http://<raspberry_pi_hostname>.local/setup to configure your audio and video devices. You can change your audio output from HDMI to the 3.5mm jack. As for speech to text, the default on-device algorithm only works when you are in a very quiet room and speak directly into the microphone. This is due to the limited processing power of the Raspberry Pi. There is simply no capacity to perform the required signal processing task to clean up the audio signal. If you sign up for a Google Cloud account by following the steps on this screen cast https://www.youtube.com/watch?v=NYyaYPHJXZw, your speech to text performance will improve dramatically. We have not gotten around to write an updated quick start guide for this new project yet. We will work on this in the next month or so.

Hi John, sorry about the confusion from before. I don’t know why the forum posted my reply to you twice, but I removed one of them already. I am glad to hear that it works for you now. Not sure why you are experiencing the freeze. Have you tried restarting the Raspberry Pi? Does it happen consistently every time you run the demo program?

@John Dabrowski Running git clone once should download all branches. You can run the setup script after you switch to the “test” branch.

@John Dabrowski Try the following: $ git clone https://github.com/cortictechnology/cep $ cd cep $ git checkout test

@John Dabrowski We were able to reproduce your issue when the SD card is too slow.

@John Dabrowski We think the issue you are experiencing is related to the transfer speed of your SD card. We put in some code to handle this problem in a new “test” branch. Can you try again on a fresh Raspberry Pi OS install? Please switch to the “test” branch by using the command “git checkout test” after you clone the CEP repo. Everything else should be the same as before. Please let me know how it goes. Hopefully, this will solve your problem.

@John Dabrowski We may have reproduced your problem. I will confirm and let you know in a few hours. Thanks.

Thanks. We are trying this configuration right now.

Also, we you say you are using Pi 8GB, do you mean the internal memory is 8GB or that your SD card size is 8GB?

Hi John, we tried reproducing this issue using the version of Raspberry Pi OS you mentioned above, but so far we have not been able to see any problems. Can you take some pictures of your hardware setup (in particular, what other accessories are connected to the raspberry pi) and send them to us? It would help with our debugging process tremendously. Thanks in advance.

Thanks for the info, John. We will try these as well.

Thanks for the clarification. We will try to reproduce this problem on our end. I will let you know soon.

Did the problems disappear when you only install CEP on a fresh Raspberry Pi OS, or are you still experiencing the same issues?

Did you install both the CAIT and CEP projects on the same Raspberry Pi instance? Do you still have problems if you only install CEP on a fresh Raspberry Pi OS setup?