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A smarter project is to make a video then merge the frames.

I think the approach was chosen partly for its lack of moving/digital/energy-needing parts.

My approach saves more energy. This one has the camera continuously running and feeding light to the sensor or film.

Mine is just taking a picture once per day.

What camera - the hole in the paper/...? There's no active electronics here, also no timekeeping ("once per day")