by Mike O
Flow to determine the external SD card number for the current device. This then enables other Automate flows to use it to read from, or write to, the SD card. Obviously you can hard code the SD card number but this should help make flows portable across different devices or changing SD cards.
Currently it stops, and flags up, if it fails to identify a card. If it finds the card it stores the result in a text file in internal memory for other flows to use.