pir motion sensor keychain camera controlled by arduino?

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 https://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?

astroboy9076 years ago
Pretty much if you have the PIR and Arduino, all you need is a couple 5v relays ;)
dougage78 (author)  astroboy9076 years ago
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.