vcgencmd showed the power status of a connected monitor, but this is no longer working with the latest RPI OS. Here is a solution with xrandr.
If you want to use date filtering capabilities of Pi3D PictureFrame using Home Assistant, you need your photos to contain valid Exif data information. Here is how to check.
One of the more recent features of the image viewer Pi3D PictureFrame is the option to show the date and time as a text overlay over your photos.
Changing the display brightness via software is really difficult to do from a Raspberry Pi. The Pi3D image viewer offers a great workaround.
How to fully integrate your Raspberry Pi digital picture frame into Home Assistant even showing the current image
Learn how Helge tightly integrated Home Assistant and the Pi3D PictureFrame image viewer to achieve a great level of comfort and functionality.
A matte in a picture frame increases the value perception of an image and also provides a solution for photos in different aspect ratios.