You can simply not use the LDR, since the ESP CAM's OV-2640 has just under 2 million light sensors built-in :lol: Just initialise the camera in greyscale at the lowest possible resolution, iterate over each (or some) of the pixels of the image, to get an average pixel brightness value. From this you...

I am planning a project which involves an ESP32 being powered by supercapacitors, which are charged by a small solar panel. The ESP will be deep sleeping mostly, only waking occasionally. I am planning on using an LDO regulator for the 3.3v rail of the ESP, so that I can get the widest voltage range...