Scanning of 8mm movies instead of Super 8

[HerrLehmannHH]

Hi Stuart,

I came across your cool project on youtube. I have rebuilded everything, but at the end I figured out, that my inherited film rolls are 8mm instead of Super 8. Almost everything ist the same except the sprocket holes, they are not centered with each frame, but they are in between.

Is there a chance to adapt this behaviour? What variables are relevant?

Kind regards,
Dirk

PS.:
sorry writing an issue as an email

[stuartpittaway]

Hello, thank you for the interest in this project.

The sproket should be easy to change in FreeCAD - its created using the gear feature so should be editable for the gear/tooth distance you need.

[HerrLehmannHH]

No it's not the physical part, its the software RasPi_Camera_Super8Scanner.py

As far as I understand, the needs to be next to each frame of the movie – which is correct for Super 8. But for 8mm it is between the images. I tried to run it, but it didn't find the next hole.

[stuartpittaway]

Ah ok.

In the Python code file RasPi_Camera_Super8Scanner.py look at link 653...

        # Default space (in marlin Y units) between frames on the reel
        FRAME_SPACING = 16.42

Increase the 16.42 number until you find something suitable for your film reel size.