Hi,
you might be interested in my dyi tiny flash trigger, all open hardware. Granted, you have a skill to solder small SMD part I've successfully used that one with my Canon 5Dmk2 and optical INON strobes. The LED is driven outside its usual current (which is actually allowed for a brief period) to create a very short bright pulse enough to trigger the strobe.
https://github.com/mwalle/flash-trigger/
-michael