I'm looking to find people that would be interested in teaming up to work on a project
to build "electro-mechanical" rolling blind shutters for large format photography barrel lenses.
With out a mechanical shutter, you will find people will manually let light through the lens for a proper exposure with a lens cap or even a hat.
The portraits I'm planning to do with high power LED panels need accurate exposure times around 1/2-1 second.
The idea is to copy the "Thornton-Pickard Roller Blind Shutter" but add encoded electric motors
run by a microcontroller.
See this 11 second video or google the shutter design.
Thanks, I hope some others would like to team up :)
Details
Here's an example of a dual curtain focal plane shutter. I'm thinking maybe one could make this vertical with coil/extension springs and two solenoids + a microcontroller.
Maybe it is easier to make a shutter that rotates on a single pivot? Maybe a blade shaped like a pie slice of a circle. The blade would rotate 30 degrees or so to open and close. A thin piece of painted aluminum could be driven by a hobby servo. This idea would not fit neatly into the wooden box of the antique shutter.
Hey, I was told it would be easier to make a dual curtain roller blind shutter.
Think of a hole in a piece of paper. And two sheets, one in front and one behind.
This could be rectangular sheets that just cover the hole and maybe think this is in a vertical orientation.
Now, the rear sheet is always allowing light through and the front one is covering the hole from light.
Attach coil springs to both that and use fast solenoids to release them.
For exposure, drop the front curtain/rectangular piece of paper and depending on your desired shutter speed, use a microcontroller to time when to release the rear piece of paper that will close the shutter.
Not sure if you've seen this site, but it has some info on repairing shutters. Maybe it could help.
I would be interested in helping, though I'm not sure what I could do.
https://learncamerarepair.com/index.php