I have a battery-powered RPi Zero W that is going to be hooked into a mobile laser projector. This is an experiential setup, so I need to be able to turn it off and on between uses.
My goal here is to have the RPi startup but not display anything through the projector (HDMI) unless I programmatically tell it to. Can anyone point me in the right direction here on how to do this?
Basically, I'd like to remove the boot splash image and any text, and keep it from going to desktop, preferably just keeping the HDMI completely off.
I have a script that I use to turn the display off, but would love to boot this way:
sudo vcgencmd display_power 0