pir motion sensor keychain camera controlled by arduino?

Hi
I am a total novice and having discovered a project on this website i am convinced that it is the answer to my own university project. I am to create a motion sensor camera within an urban context that will be triggered by people and record their movements and the space itself.
The project I am talking about http://www.instructables.com/id/Keychain-camera-with-PIR-motion-detector-controlle/It involves pir sensor keychain camera controlled by arduino. I am more than willing to have a go but from the tutorial there are no guidelines as to what components I would need and how I would go about in wiring and connecting the parts. I am searching the internet and this website. Does anybody have any experience with such work and if so could you possibly help please. Thanks?

Comments

[astroboy907]

Pretty much if you have the PIR and Arduino, all you need is a couple 5v relays ;)

[dougage78]

Hey thanks. I am very new to this type of stuff. This will be my first attempt. From the link that I provided, can you explain the components that i would need. Are you able to provide a step by step guide based on this link. Sorry for asking as I understand that what i am asking for is alot.
Thanks