Just to provide a quick update on the project:

• Unfortunately, the project has somewhat stalled since last year, although we are still dreaming of continuing and hacking a stable & cheap version of a camera trap! (Happy to share our code & schemes with everyone interested btw)
• Our last development was that we have switched from using a keychain camera in our Arduino-based trap, as the price/reaction time ratio was really bad. I.e. the really cheap ones (>$5) take ages (~1-2 sec) to wake up upon trigger (so the tiger will be long gone), and we can't keep it on all the time due to the need to save battery time; meanwhile, the expensive ones (>$30) are just too expensive
• We have therefore switched to using an Arducam, which would increase the overall price of the trap ~$10, but might work a lot better
• We have all the parts but we are not currently actively working on it - waiting for a better time to come! (Aren't we all, always?!)

Thanks for everyone still interested in the project - let us know if you'd like to contribute!