So how it works? iPhones LED give its light to the photoelement, and it triggers the relay with a slight delay. iPhone has two kinds of flash. First one is needed for autofocus to work and “redeye prevention”. Second one is for actual photo. So we need to drop that first flash off. It is really simple algorithm, realized on arduino structure. It is still far away to commercial prototype, but it has its potential. Chinese still don't do that staff yet.
With a help of that simple iSync you can connect any studio equipment to the iPhone, or any smartphone. That device is just a result of my personal views that are utopia.
Who may need to use an external flash gun with iPhones??? Or studio equipment???
There are also a lot of interesting things everyone can see in this blog site http://ravvinoff.livejournal.com/