Pol Cariño who is part of the Balinsasayao PAMBI is interested in using camera traps to monitor birds and other wildlife in the park. With cheap canon powershot cameras (second hand), a motion sensor and the Canon Hacker's Development Kit, it is possible to make our own camera traps. Others have done this already. See

http://hackcanon.com/

http://spectrum.ieee.org/geek-life/hands-on/using-the-canon-hack-development-kit

http://www.triggertrap.com/news/triggertrap-and-chdk-support

https://homepage.univie.ac.at/walter.hoedl/Leeb_etal_Herpetozoa_2013.pdf

Steps

Make a budget

Find funding

Find cheap cameras

Design (3D print?) or otherwise improvise a housing

Build and test it.