On Sunday 26 January 2003 07:49 pm, you wrote: > Jorgen > > No unfortunately I didn't get one from you off list but I did read this > post (shown below) to the forum. Hopefully this will allow you to respond > directly. [EMAIL PROTECTED] > > Now, I like the sound of a cheap and fairly simple way of doing this. > Perhaps you could email me with a little more detail? Talk of strobes etc > are making my head spin. I thought you had got to the point where you were > talking about a sound trigger, namely the sound of the head hitting the > ball. This implies after impact and what I'm looking for is just prior to > and at impact. > >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
Can you do basic electronic construction? Or perhaps do you know a friend or a kid who can? If so, this basic idea can utilize a simple cheap ordinary camera flash unit as the single shot strobe. (Please don't flame, on the use of the word strobe, - thanks) Yes, that is true. I did that when I was a kid, - about 13 or 14. I used a crystal mike, and a single transistor, hooked up to an ordinary electronic camera flash. I had a 35mm Camera, which I set at a very slow shutter speed, and closed down the aperture as small as I could (e.g f22 or something like that). I would trigger the camera, then drop the ball, or whatever it was, and the sound would trigger the flash unit pretty much immediately, so I got some fun photo's at a time very, very, close to impact. If you were to use, for example, an optical sensor and LED combination, and maybe just a very few components, to switch (fire) the flash unit, you could set it to have the beam interrupted just before impact (sensor placement in the swing path would adjust the timing), thereby getting you your "before impact" shot. I'll try to find some info, and will forward privately.... There are a few guys here who I'm sure could come up with a simple circuit in a second or two, that can use either sensor type, and a transistor or two, to fire an ordinary flash unit. :o) These days, it may be a lot harder to find a crystal mike (they are great for this), than I remember.... But with a simple circuit, any mike will do. A fancy setup, could trigger (with a time delayed, style control circuit, - a group of flashes, to get multiple exposures. But such a system is *not* a simple setup like the single shot version. As I find time, I will "play around" with it, and see what I can remember.... But please don't expect "fast" results... "I ain't a kid anymore"... :o) Cheers, Jorgen >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
