been wanting to convert my
projectors so they could do frame by frame capturing of the film onto
my computer for editing. This weekend I finished up the bolt-on drive
for the projector so it can be controlled by the computer to move at a
certain speed and for a certain time frame. It works pretty good by
there are still some issues to work out like putting in a diffuser for
the light and putting a dimmer switch on the light so I can turn it
down a bit and not burn up my film. I'll try and post some sample clips
once I get the last few bugs worked out.
Here you can see the bolt on drive assembly. This has the stepper
motor, drive shaft, cam, and switch all on the one piece, that way it
can be unbolted and used as a normal projector again.
Here's a slightly closer view showing the switch. This ties into the
mouse and tells the computer to capture the frame when the cam pushes
the roller switch.
Here's a shot inside the projector showing how the drive shaft from the
stepper motor connects to the drive shaft in the projector. The shaft
in the projector has a flat area on it and there is a setscrew in the
drive shaft from the stepper motor. Test Clip
to visit Jan Demmendal's website, which inspired me to
do my own experimentation.
Made another test clip tonight, Click Here
to watch it. This one
was shot at about 3 frames per second and what I did was taped a piece
of foamboard to the wall and pointed the camera and the projector at
that foamboard. I'm still waiting on the new lenses to come in so until
then I won't do to much more with trying to project straight into the
camera. This clip is 19mb