how to fire on multiple USB ports

[Teeroy666]

I've tried a number of different approaches, but maybe its not possible.... Can multiple cameras be fired on the same Pi using gphoto? (multiple USB ports)

[msmeissn]

using gphoto2 commandline tool would be something like:

run: gphoto2 --auto-detect
parse the listed ports , and run for each gphoto2 --trigger-capture --port $PORT

but this will happen mostly sequential.

if you want it less sequential, you would need to write an app, e.g. in C or python to avoid unecessary delays.