Originally Posted by Azaruk

OK, with much research and a lot of help from a diverse group of extremely helpful people, here's my design.

I don't want to commit it to construction until I am sure all is OK, although I have begun the process of designing printed circuit boards.

I have incorporated Rolf Randby's slave trigger on the understanding that it be used solely for private use.

All comments and criticism, good or bad, will be really appreciated.

Thanks for the help and suggestions to all who contributed to this thread.

Looks like quite an ambitious project you have laid out for yourself.
The great thing about DIY projects is that you can keep on modify them until you get it the way you want it. And there is no way you can void the guaranty.
Please note that the posted PIC code for my SFT is designed for P&S cameras and is not guarantied synchronize with all cameras. But if it doesn't work with your camera(s) I can get you my new professional code (on a PIC) that fires a slave on the last flash of ANY camera or the FIRST if that is needed, it is extremely flexible. The circuits are identical. See:
http://www.pbase.com/sinoline/slave_flash_trigger_iii

Good Luck

Rolf

Edit:
Here is a link that you might find useful: http://www.diyphotography.net/diy-ho...ons-on-a-theme