Remote Trigger for D5000 (Light gates?)

[Formatted]

I'm looking for a camera trap type trigger for a D5000. I'm planning on leaving my camera in a location to photograph wildlife remotely.

Just currently find the right piece of kit to set the camera off when something crosses in front of the camera.

Anyone got any experience with this?

 

[KmH]

You need a trigger that senses motion. I'll leave it to you to do the Internet search.

 

[Light Artisan]

Cabela's: Primos® TruthCam 46 Trail Camera

 

[Formatted]

You need a trigger that senses motion. I'll leave it to you to do the Internet search.

I know what I need KmH, I need a PIR sensor, I have no idea how to make one since I'm not great with electronics!

Cabela's: Primos® TruthCam 46 Trail Camera

I've got a perfectly good camera I'd like to put to some use! thanks though