I'm toying with the idea of offering my "el cheapo" sound card shutter testers for trade-ins
I've already made two - one for myself, and one for a friend. I already have the components for a couple of more, and Gordon Coale asked if he could have one.
This made me think - since we all fool around with varous old cameras, a shutter tester is a useful thing to have - particularly if it comes cheap
BTW, you can check out the design and specs on my web page: www.hrtranslations.com/photo/Shutter.html
You need a computer with a sound card and sound editing software (shareware "CoolEdit" is OK, and also freeware "Audacity"...).
You also need a light source (table lamp, etc.), and that's all...
The whole stuff is relatively cheap to build - only problem is postage - from Croatia to USA, I think it would be something like $10-$15
Anyway, since I'm not interested in getting any money for this, I thought about trade-ins. Like, instead of payment, I'll accept the stuff I'm interested in - filters, lens shades, viewfinders, etc...
Just toying with the idea, don't get me wrong... I'm not trying to get rich here...