> Wow, that is an impressive page. Nice work! Thank you very much It's still under construction. Unfortunately I've got bogged down in a couple of favours that have turned into time-eating monsters or I'd be playing around with breaking things/blowing stuff up for more pictures and making the PCBs and s/w presentable. And now I've found out my neighbour has an airgun and a 22 and there's a new series of Timewarp started ........ I haven't included descriptions or s/w for the PICs yet, but briefly the 18F1320 is a timer with settable delay from trigger, repeat delay and number of flashes (hence the tactswitches). The 16F628 triggers the flashes, from 1 at a time to 10 at a time (bright !), the 16F88 is a delay timer from the shutter via the hot shoe. I wanted this to separate the camera's internal front or rear curtain flash from external flashes to give for example flash, movement, flash, movement, flash, which gives a picture some dynamics New 22uF are used, although disposables have 80 - 160uF. I did it my way to get the repeat rate up, but I'm considering FETs to switch in the disposable caps for extra power. I think it's simpler and more versatile to make a number of smaller flash units that can be fired individually or in unison rather than attempt one large unit. It would also be possible to put different-coloured filters in front of each tube for example. I've lots of other notes and points which will be on the page eventually once I've stopped doing people favours ;-) wbr -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist