I have a Pi3B running Volumio in my car.
The PSU is Mausberry Circuits Car Power supply.
The PSU is powered also by the battery and the ignition. Once ignition is OFF the Pi getting shut down properly to prevent SD corruption.
Last week my PSU died and i can’t order a new one.
Is there a way to use regular 12V USB power supply but to make the SD read only so the Pi can be just cut power without corrupting the SD card?
Thanks in advance.