Building A Professional Grade Shutter Tester

[jfk]

I'm having a rough time locating an acrylic sheet in Europe that fits? I'm not sure how important the light transmission percentage is for this or if it being any acrylic sheet that is matte on one side would just work? Any help regarding that would be appreciated

EDIT: I ended up ordering a sheet off of the US amazon because the shipping was only 8 euros

 

[ic-racer]

I think the acrylic sheet is important, if it is too thick or dense, the voltage will have to be set higher than 12V. If it is too transparent, the light distribution may show a hot-spot in the middle.

 

[Bill Burk]

For a similar project I found a frosted white acrylic clipboard at Office Depot.

 

[ic-racer]

Since the calibration curve of the EV light output is fixed in the firmware, the 'correct' acrylic is important, as is the 'correct' LED.

 

[srozum]

Hello there!

I want to let you know that I just published the source code of Film Camera Tester SRT-2 on Github.
I am glad that after so many years there are still interest in building that project.

What you possibly can do with that code?

You may want to modify calibration tables to match your LED. Add different sensors or measuring modes. What else?

Consider that latest version takes almost all memory of Atmega 328 chip. So if you want to add new functionality you have to sacrifice some existing functionality.

I doubt that it can be easily transferred to more powerful architecture. But who knows?

Best,
Serhiy

P.S. Big thanks to @ic-racer for believing in this project and guiding other builders.