I've talked to some other photographers about this that know way more about the equipment and using it than I do, but don't seem to know their equipment on this level.
I have a project going that involves firing multiple cheap, used, manual flashes. It could be ten of them, if I get that many flash units. So I'm building a box with semiconducting switches that will trigger on the camera's PC socket. But I need synchro terminals to attach the flashes to. I got some from Pentax, the sort on the K1000 since that's the camera I have, it was the only brand I could think to name when they asked me. But the signal terminal is a screw with the socket at the other end. A very small screw in a small plastic plug. The connection in the camera is made with a spring-loaded pin pressed against the screw head, but that's not going to work out easily for me. So what synchro terminal has solder lugs? It doesn't need to be Pentax. And to preemptively answer the question that's inevitably asked when I bring this up, I don't want to use optical slaves because they cost $15 each, and because they would have to fire on reflected light, which means I'm not going to get any extra range that way.
