I built my own this past fall. I used the board that comes from Hags house. It works far better than any other commercial camera out there. The only pics I get with nothing in them are the one after the deer has walked through the line of sight of the camera. I have it set to take 2 pics at a time so sometimes the 2nd pic has nothing. It wasn't hard to build. The guys on the board over there will help you with any questions you have.