I studied your schematic and modified the circuit a little bit. At
www.discolitez.com you can find a proposal how to switch a high-voltage load. They use an opto-coupler (LED & Triac) to separate high-voltage from the low-voltage part (see
www.discolitez.com/circuits-8triac.shtml).
Using this coupler I changed you strobos circuit in that way that you can digitally (from the LPT-port) ignite a flash - theoretically. So it should be possible to use DiscoLitez (the winamp-driver) to control the strobo. It's also possible to extend this to 2, 4 or more strobos (up to 32 for the deluxe-version :lol: ).
But if you don't want to use DiscoLitez you can write a small program to output a square-wave at the LPT-port and control the strobo in that way.
The circuit is not tested !!! So please Elektroda-Freaks take a look at it and make some comments, suggestions, improvements !!!
There is for example one question: What will happen if the couplers LED is powered (LPTs D0=high) and C3 is beginning to charge (after an igniton).
Will TH1 switch if a certain voltage-level at C3 is reached ? This could lead to uncontrolled flashes and we somewhere have to add a capacitor to form a short pulse ?!?
Mik
According to **broken link removed** no points are needed for a look :arrow: