Homebrew PCBs

Hello all,

I am wanting to build a seeking device (camera), or thermal heat 
detector. No need for LCD, a blinking LED would be fine. I want to 
use it to track game for hunters who can not recover wounded game 
(mostly deer)that has been shot and difficult to find.

I have seen units for this in major sporting goods magazines and 
websites. I think they are called game trackers.

Does anyone have, or know of, a schematic or layout for this or 
similar device?

Many thanks in advance,
OpryStar