I tried this a while ago. Didn’t get really work as I thought it would and I never got round to trying again.
The current version of the dropController only has one flash trigger so you would need to create something that fired flashes separately. I had a simple breadboard circuit based on another Arduino.
The next version of the dropController will have 2 flash triggers. I am finding it difficult to find the time to develop it so not sure when this will be ready