After two cameras and lots of cuss words, my first unit finally works. I'm going to start my second tomorrow. I would like to add a timer to it. However, I'm electronicly challenged. I don't know how to read the diagrams that are posted. Can someone suggest the easiest timer to use/build and make a list of what i need to make it? I used the RS PIR with the first camera but may try the Lamson this time. I would like about a 1 minute to 2 minute delay between pictures.