You could definetly do with some extra 47~100µF + 10~100nF caps to reduce the noise these steppers might introduce to the Vin pin when hooking these up to the Photon direct.
You’d also need to have a good USB supply - especially if running more than one of these.
330mA x Steppers + 250mA would be the minimum requirement, I’d say - amd that’s definetly more than a USB port will give you.
As it seems, unlike servos these steppers don’t use PWM signals but you need to control the individual stepper coils direct.
So you’d rather need something like this library
https://build.particle.io/libs/567357bf401a14230f000a22/tab/Stepper.h