The elephant detection system will not be finished in time I'm afraid! The biggest problem towards the end was not being able to access elephants in order to obtain training images! The best training images would have come from the raspberry pi camera, which was not possible to do, since I had trouble getting access to elephants! So at the moment I'm working on https://hackaday.io/project/15685-automated-garden-wildlife-detection-project as a proof of concept, using common garden animals (e.g. cat, fox, hedgehog, mouse, rat, badger) instead of elephants. This will also allow me to devise an appropriate IR LED array, and work on switching between IR-filtered and noIR-filtered cameras depending on day/night. That was the second biggest problem!