Cheap and easy to build, Arduino based, optical shutter tester, designed to reproduce the effect of the Leitz drum tester used to adjust the Leica shutters in the factory.

The entire idea and source code belongs to Niglyn (Nige Last), so all credits go to this awesome guy.
You can find everything you need to build this tester on his github page:
https://github.com/billbill100/Camera...
The documentation you'll find there goes as far as to link to the exact items you'd have to buy to get your project done.

You can also follow the dedicated thread on Photrio, where you can also ask questions and seek advice.
https://www.photrio.com/forum/threads...