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Arduino - Integrating Light Meter - Shutter Control

This project was awarded to EngineerCat for $500 USD.

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Project Budget
$250 - $750 USD
Total Bids
11
Project Description

Develop an integrating light meter for pinhole photography.
Pinhole photography requires long exposures (2 sec to 30 min or more). Because exposure times are long, light conditions change, and the idea is to continuously measure light and calculate exposure. The system would open up a shutter mechanism (solenoid, stepper motor with a circular open/shut area, etc.) at the start of exposure, and maintain the shutter open until the light meter had detected enough light to properly expose film. Then the system would close the shutter.
There are resources out there on the web that have done similar projects. Looking for someone that can develop this in the Arduino platform. Here are some resources to look into that would explain much better what I am trying to accomplish:
[url removed, login to view]@N00/sets/72157594223607004/
[url removed, login to view]
[url removed, login to view]
The job requires to select the smallest arduino or arduino compatible pieces, and the writing of the code for the system to work.

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