interactive + playable · live

35mm projector

fpsbladesviewfinishthemedrag to crank · click a part

A Geneva cross on the intermittent sprocket's shaft makes a quarter turn: four perforations, one frame. It turns only while the driver's pin is in a slot, 90° of the driver's turn. For the other 270° the cross is locked and the frame sits still in the 0.825 × 0.602 in aperture. The shutter turns once a frame. One blade covers every pull-down and the others cut the still frame. So two blades flash each frame twice: 48 Hz at 24 fps. The loops above and below the gate take up the difference between the steady sprockets and the stepping one.

drawn in code with anatomy, a skill that explains an idea by building it as a working machine. the readout comes from the same model that moves the parts.

figure: hammer · kit: anatomy by wheresryan22 (mit)