Guillotine Shutter using BBC micro:bits – Roger Hyam

[RogerHyam]

Guillotine shutters are just what the name implies. A shutter in the form of a gravity driven guillotine. They can either be implemented as two plates that slide down one after another (the delay between release governing the exposure time) or a single plate with a slit in it (the width of the slit governing the exposure time). Mine is the former kind aimed at exposure of several seconds or more on my own simple silver gelatine plates. It only achieves what I can do by simply removing and...

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