Hello, I have completed the esp32 cam section of the Smart home course. However, I was not exactly successful. I was not able to obtain the AI-Thinker board but I think the one I did use is the same. The device I used is shown below. I managed to get the camera working via directly connecting using i/p. I found one of your other tutorials and managed to manipulate some of the settings to get a picture. The is image is poorly focused and largely unusable. Is there any way to focus the lens. It appears to be cemented in place and I have been hesitant in trying to move it. Compared to some of the images in your material, what I have is unacceptable. Your images in the course book are very sharp and clear.
The next problem that I encountered was being able to get the image to show on my NodeRed ui. The name appears with the correct group name but all that I see is a small square icon but no video like I was able to see when connected directly with the browser. And, Yes, I closed the connection to the browser. The NR ui is the same  one that I used for the earlier section of the course using four switches and the BME charts/gauges. this part works as advertised. 
The device I used is here:https://www.amazon.com/Aideepen-ESP32-CAM-Bluetooth-ESP32-CAM-MB-Arduino/dp/B08P2578LV/ref=sr_1_25_sspa?crid=24GZR77WM7XQI&keywords=ai-thinker%2Besp32-cam&qid=1681848257&s=electronics&sprefix=AI-thinker%2B%2Celectronics%2C89&sr=1-25-spons&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUExM0pMME9EQVA2TDhIJmVuY3J5cHRlZElkPUEwNzQ4OTE0VUY5WDFLSDlKUEZVJmVuY3J5cHRlZEFkSWQ9QTA4ODM3NDcyNDkxODNXWkFTQTJNJndpZGdldE5hbWU9c3BfYXRmX25leHQmYWN0aW9uPWNsaWNrUmVkaXJlY3QmZG9Ob3RMb2dDbGljaz10cnVl&th=1
Thank you
KentM