I mostly finished the initial boards and s/w a couple of days ago
and tried it out briefly

http://home.clear.net.nz/pages/joecolquitt/multi-flash.html

There's no text to that page yet. Parts used from the cameras
are the tubes, trigger transformers and 22n cap. The flash section
circuit is based on the link I've posted before. I found the camera
trigger transformer primaries need much more than the 65V of that
circuit, so I swapped the 100k/390k divider. Luckily I did order
and have the 300V optos

Results would be better if a non-reflective black backdrop was
used and/or the background was much further away. The glove
example clearly shows how the flash reflected from a light back-
ground causes apparent transparency

I think the flash is bright enough at close range with 22uF. The
original cameras have anything from 80uF to 200uF. I'm thinking
of making a second set of single flashes with selectable caps.
Probably will add a switchable camera 80uF in parallel with the
22uF. Fortunately the 325VDC is just under their 330V rating,
but I might be happier if the DC was perhaps closer to 300

Capturing the water-filled balloon bursting was beginner's luck, I
tried a blowgun just the once. A pin with cotton wool wadding
was blown through the IR beam, after checking the timing with
a dummy shot

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