At present it can suspend the Meural canvas, wake it from sleep mode and I have access to the light sensor that is built-in to the Canvas. I intend to continue development to give control over the picture galleries, etc.
Meurals have the ability to load pictures directly from a local device. I would like to improve my driver to facilitate the display of pictures stored locally on the Hubitat. I imagine use cases that would temporarily change the Meural display in response to some sort of event.
Absolutely true and yes it certainly would work for the use case that I mentioned. As a matter of fact we use SD cards for our two Meurals. The primary reason is that the only available internet provider in our area offer very slow upload speeds so loading photos to the Meural hosted website is untenable.
Unfortunately the SD card option doesn't allow for changing pictures "on-the-fly". I had hoped that it would be possible and I even programmed a Toshiba WiFi SD card for that purpose. Unfortunately the Meurals seem to want a reboot to recognize the new pictures.
Long story short, I am really driving at a methodology that will enable flexible picture changes without rebooting or physically interacting with the Meural. Eventually I hope to also build an interface to automatically load Google Photo albums.