I need a camera which monitors grayscale the environment because of strict battery life requirement (one week) and because computers can only understand grayscale. I am thinking GoPro Hero 3 because of Pebble support, bluetooth connection and low resolution (5 Mpix). I want to monitor just mice on roofs with the camera and need to know if the situation has changed in the trap regularly. There is no light in the environment so I am not sure if infrared or extra light should be used there.
How can you monitor grayscale changes for e-ink displays? Is there any camera having grayscale detecting capability with e-ink displays?